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Cisco Secure Firewall

Overview

The Cisco Secure Firewall (formerly Next-Generation Firewall) is a security product designed to protect your network, from physical ones to those hosted in the cloud.

  • Vendor: Cisco
  • Supported environment: On Premise
  • Version compatibility, if applicable:
  • Detection based on: Security Alerts, Telemetry, Admin
  • Supported application or feature:
  • Adaptive Security Appliance (ASA): Combines firewall, antivirus, intrusion prevention, and virtual private network (VPN) capabilities.
  • Firepower Threat Defense (FTD): A unified software image that includes the Cisco ASA features and FirePOWER Services. This unified software offers both ASA and FirePOWER functionalities on one platform, in terms of both hardware and software features.
  • Next Generation IPS (NGIPS): Detects and stops intrusions in your internal network or public cloud. NGIPS helps you to mitigate vulnerabilities and manage patch applications.

High-Level Architecture Diagram

  • Type of integration: Outbound (PUSH to Sekoia.io)
  • Schema

cisco_secure_firewall_architecture

Specification

Prerequisites

  • Resource:
    • Self-managed syslog forwarder
  • Network:
    • Outbound traffic allowed
  • Permissions:
    • Administrator or Root access to the Cisco Secure Firewall appliance
    • Root access to the Linux server with the syslog forwarder

Transport Protocol/Method

  • Indirect Syslog

Logs details

  • Supported functionalities: See section Overview
  • Supported type(s) of structure: Plain text
  • Supported verbosity level: Alert, Warning, Informational

Note

Log levels are based on the taxonomy of RFC5424. Adapt according to the terminology used by the editor.

Step-by-Step Configuration Procedure

Instructions on the 3rd Party Solution

Configure Cisco Secure Firewall Logs

  • On Cisco appliances, most of the important hardware and software activities that are relevant for security detection and analysis can be enabled by one simple command:
hostname(config)# logging enable
hostname(config)# logging timestamp
hostname(config)# logging trap informational

Configure the Cisco Appliance for Log Forwarding

  • To forward logs to a syslog concentrator:
hostname(config)# show interface
hostname(config)# show hostname
hostname(config)# logging host interface_name syslog_ip [ tcp[/ port ] udp [/ port ] ]
  • Example:
hostname(config)# logging host interface_1 127.0.0.1 udp
  • Explanation:
  • The interface_name specifies the interface through which you access the syslog server.
  • The syslog_ip specifies the IP address of the syslog server.
  • The tcp[/ port ] or udp[/ port ] keyword specifies whether TCP or UDP is used to send syslog messages. The default is UDP on port 514.

Note

If you specify TCP, the ASA discovers when the syslog server fails and as a security protection, new connections through the ASA are blocked. If you specify UDP, the ASA continues to allow new connections whether or not the syslog server is operational. Valid port values for either protocol range from 1025 through 65535. The default UDP port is 514, and the default TCP port is 1470. For more information about Cisco ASA logging, please refer to your Cisco documentation.

Instruction on Sekoia

Configure Your Intake

This section will guide you through creating the intake object in Sekoia, which provides a unique identifier called the "Intake key." The Intake key is essential for later configuration, as it references the Community, Entity, and Parser (Intake Format) used when receiving raw events on Sekoia.

  1. Go to the Sekoia Intake page.
  2. Click on the + New Intake button at the top right of the page.
  3. Search for your Intake by the product name in the search bar.
  4. Give it a Name and associate it with an Entity (and a Community if using multi-tenant mode).
  5. Click on Create.
  6. You will be redirected to the Intake listing page, where you will find a new line with the name you gave to the Intake.

Note

For more details on how to use the Intake page and to find the Intake key you just created, refer to this documentation.

Configure a forwarder

To forward events using syslog to Sekoia.io, you need to update the syslog header with the intake key you previously created. Here is an example of your message before the forwarder 

<%pri%>1 %timestamp:::date-rfc3339% %hostname% %app-name% %procid% LOG RAW_MESSAGE
and after 
<%pri%>1 %timestamp:::date-rfc3339% %hostname% %app-name% %procid% LOG [SEKOIA@53288 intake_key=\"YOUR_INTAKE_KEY\"] RAW_MESSAGE

To achieve this you can:

  • Use the Sekoia.io forwarder which is the official supported way to collect data using the syslog protocol in Sekoia.io. In charge of centralizing data coming from many equipments/sources and forwarding them to Sekoia.io with the apporpriated format, it is a prepackaged option. You only have to provide your intake key as parameter.
  • Use your own Syslog service instance. Maybe you already have an intance of one of these components on your side and want to reuse it in order to centralize data before forwarding them to Sekoia.io. When using this mode, you have to configure and maintain your component in order to respect the expected Sekoia.io format.

Warning

Only the Sekoia.io forwarder is officially supported. Other options are documented for reference purposes but do not have official support.

Raw Events Samples

In this section, you will find examples of raw logs as generated natively by the source. These examples are provided to help integrators understand the data format before ingestion into Sekoia.io. It is crucial for setting up the correct parsing stages and ensuring that all relevant information is captured.

%FTD-2-106001: Inbound TCP connection denied from 172.16.10.234/901 to 192.168.122.55/111 flags SYN  on interface LAN

%FTD-2-106006: Deny inbound UDP from 172.16.10.234/901 to 192.168.122.55/111 on interface LAN

%NGIPS-1-430002: EventPriority: Low, DeviceUUID: b2433c5c-a6a1-11eb-a6e7-be0b9833091f, InstanceID: 2, FirstPacketSecond: 2021-04-30T11:31:19Z, ConnectionID: 4, AccessControlRuleAction: Allow, SrcIP: 172.16.10.10, DstIP: 172.16.20.10, ICMPType: Echo Request, ICMPCode: No Code, Protocol: icmp, IngressInterface: inside, EgressInterface: outside, ACPolicy: Default Allow All Traffic, AccessControlRuleName: test, Client: ICMP client, ApplicationProtocol: ICMP, InitiatorPackets: 1, ResponderPackets: 0, InitiatorBytes: 74, ResponderBytes: 0, NAPPolicy: Balanced Security and Connectivity

%NGIPS-1-430003: EventPriority: Low, DeviceUUID: e8566508-eaa9-11e5-860f-de3e305d8269, InstanceID: 3, FirstPacketSecond: 2020-02-04T08:45:34Z, ConnectionID: 34774, AccessControlRuleAction: <br/>Block with reset, SrcIP: 93.157.158.93, DstIP: 10.1.9.9, SrcPort: 13723, DstPort: 80, Protocol: tcp, IngressInterface: outside, EgressInterface: seversDMZ, ACPolicy: Basic IPS/IDS and GeoIP block foreign contries, AccessControlRuleName: GeoBlock other Countries, Prefilter Policy: Unknown, ConnectionDuration: 0, InitiatorPackets: 1, ResponderPackets: 0, InitiatorBytes: 54, ResponderBytes: 0, NAPPolicy: Balanced Security and Connectivity

%FTD-1-430005: SrcIP: 10.0.1.20, DstIP: 81.2.69.144, SrcPort: 46004, DstPort: 80, Protocol: tcp, FileDirection: Download, FileAction: Malware Cloud Lookup, FileSHA256: 2546dcffc5ad854d4ddc64fbf056871cd5a00f2471cb7a5bfd4ac23b6e9eedad, SHA_Disposition: Unavailable, SperoDisposition: Spero detection not performed on file, ThreatName: Win.Ransomware.Eicar::95.sbx.tg, FileName: eicar_com.zip, FileType: ZIP, FileSize: 184, ApplicationProtocol: HTTP, Client: cURL, User: No Authentication Required, FirstPacketSecond: 2019-08-16T09:39:02Z, FilePolicy: malware-and-file-policy, FileStorageStatus: Not Stored (Disposition Was Pending), FileSandboxStatus: File Size Is Too Small, URI: http://www.eicar.org/download/eicar_com.zip

%ASA-6-106012: Deny IP from 192.168.122.143 to 224.0.0.22, IP options: "Router Alert"

%ASA-6-106015: Deny TCP (no connection) from 10.9.4.3/52675 to 161.5.222.141/443 flags FIN ACK on interface ACME_interface

%ASA-4-106023: Deny udp src ACMEsL:10.0.200.29/320 dst identity:224.0.1.129/320 by access-group "ACME_group" [0x0, 0x0]

%ASA-6-106100: access-list ACME_INFRA permitted udp ACME_INFRA/10.1.0.16(42592) -> ACME/10.1.1.76(161) hit-cnt 1 first hit [0x42666c4c, 0x05739900]

%ASA-6-110003: Routing failed to locate next hop for icmp from WAN:10.11.0.2/0 to WAN:10.112.115.1/0

%ASA-5-111007: Begin configuration: 10.24.25.21 reading from http [POST]

%ASA-5-111008: User 'admintufin' executed the 'login' command

%ASA-6-113004: AAA user authentication Successful : server = 10.79.48.28 : user = jdoe001566

%ASA-6-113012: AAA user authentication Successful : local database : user = admintufin

%ASA-7-199019: Mar  6 21:58:53 Ipc[1234]: func return 1#012

%ASA-6-302013: Built inbound TCP connection 1800234408 for TTA-ACME-VDO_CAM:10.1.7.248/40454 (10.1.7.248/40454) to TTA-ACME-SRV_INFRA:10.1.0.10/53 (10.1.0.10/53)

%ASA-6-302014: Teardown TCP connection 3642851852 for outside:9.27.0.93/63677 to Pika:172.17.1.200/443 duration 0:10:06 bytes 4666 FIN Timeout from Pika

%ASA-6-302020: Built inbound ICMP connection for faddr 47.241.116.84/10800 gaddr 10.11.0.2/0 laddr 10.11.0.2/0

%ASA-6-302020: Built inbound ICMP connection for faddr 1.2.3.4/1(LOCAL\USER) gaddr 1.2.3.5/0 laddr 1.2.3.5/0 (USER) type 8 code 0

%ASA-6-302021: Teardown ICMP connection for faddr 172.16.10.208/2189 gaddr 172.16.19.90/0 laddr 172.16.19.90/0 (karibou)

%ASA-6-302021: Teardown ICMP connection for faddr 1.2.3.4/25481 gaddr 1.2.4.3/0 laddr 1.2.4.3/0 type 8 code 0

%ASA-6-302020: Built inbound ICMP connection for faddr 1.2.3.4/14 gaddr 172.1.1.1/0 laddr 172.1.1.2/0 type 8 code 0

%ASA-6-302021: Teardown ICMP connection for faddr 1.2.3.4/14 gaddr 172.1.1.1/0 laddr 172.1.1.2/0 type 8 code 0

%ASA-6-305011: Built dynamic TCP translation from interco_pa_asa:10.79.16.23/35928 to dmz-gce:126.189.129.55/35928

%ASA-6-305012: Teardown dynamic TCP translation from interco_asa:10.79.16.24/55924 to dmz:12.18.129.56/55924 duration 0:00:15

%ASA-4-313005: No matching connection for ICMP error message: icmp src outside:1.2.3.4(LOCAL\a.smithee) dst inside:1.4.3.2 (type 3, code 3) on outside interface.  Original IP payload: udp src 1.4.3.2/53 dst 1.2.3.4/60717.

%ASA-3-313008: Denied IPv6-ICMP type=136, code=0 from fe80::f037:5fbc:b824:230d on interface NEA-FOR-WIFOR

%ASA-7-609002: Teardown local-host outside:1.2.3.4 duration 0:10:26

%ASA-6-611101: User authentication succeeded: IP address: 0.0.0.0, Uname: admintufin

%ASA-5-611103: User logged out: Uname: admintufin

%ASA-6-716058: Group <CLIENT_VPN> User <Acme_account> IP <86.199.78.204> AnyConnect session lost connection. Waiting to resume.

%ASA-6-716059: Group <CLIENT_VPN> User <User_Acme> IP <10.17.100.175> AnyConnect session resumed connection from IP <10.17.100.175>.

%ASA-5-722011: Group <GroupPolicy_CLIENT_VPN> User <User_acme> IP <91.172.139.4> SVC Message: 17/WARNING: Reconnecting the VPN tunnel..

%ASA-5-722012: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <86.217.237.163> SVC Message: 16/NOTICE: Client PC is going into suspend mode (Sleep, Hibernate, etc)..

%ASA-6-722023: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <86.215.190.93> TCP SVC connection terminated without compression

%ASA-6-722023: Group <GroupPolicy-CLIENT-VPN> User <a.smithee> IP <1.2.3.4> UDP SVC connection terminated without compression

%ASA-5-722028: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <91.172.139.4> Stale SVC connection closed.

%ASA-5-722032: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <93.23.18.76> New UDP SVC connection replacing old connection.

%ASA-5-722033: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <77.205.143.138> First TCP SVC connection established for SVC session.

%ASA-5-722034: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <109.17.100.175> New TCP SVC connection, no existing connection.

%ASA-4-722037: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <92.131.212.102> SVC closing connection: Transport closing.

%ASA-6-725001: Starting SSL handshake with client WAN:195.101.173.60/49238 for TLS session.

%ASA-6-725002: Device completed SSL handshake with client WAN:90.114.208.186/65531

%ASA-6-725006: Device failed SSL handshake with client WAN:195.101.173.60/49699

<166>Nov 09 2022 10:01:59: %ASA-6-725007: SSL session with client WAN:195.101.173.60/49486 terminated.

%ASA-4-733100: [scanning] drop rate-1 exceeded. Current burst rate is 8 per second, max configured rate is 10; Current average rate is 23 per second, max configured rate is 5; Cumulative total count is 14188

%ASA-6-737016: IPAA: Freeing local pool address 192.168.122.247

%FTD-6-852001: Received Lightweight to full proxy event from application Snort for TCP flow 1.2.3.4/10000 to 4.3.2.1/47003

%FTD-6-113004: AAA user authentication Successful : server =  10.10.48.61 : user = jdoe

%FTD-1-430002: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 3, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 62230, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 63853, DstPort: 443, Protocol: tcp, IngressInterface: WAN, EgressInterface: DMZ, IngressZone: OUT, EgressZone: DMZ, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: IN_KEMP_MAIL, Prefilter Policy: EXAMPLE L3-L4 Policy, InitiatorPackets: 2, ResponderPackets: 1, InitiatorBytes: 128, ResponderBytes: 66, NAPPolicy: Balanced Security and Connectivity

%FTD-1-430003: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 5, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 35868, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 56901, DstPort: 53, Protocol: udp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_SRVAD_DNS_OUT, Prefilter Policy: EXAMPLE L3-L4 Policy, User: Not Found, Client: DNS client, ApplicationProtocol: DNS, ConnectionDuration: 0, InitiatorPackets: 1, ResponderPackets: 1, InitiatorBytes: 88, ResponderBytes: 152, NAPPolicy: Balanced Security and Connectivity, DNSQuery: 1.fr.pool.ntp.org, DNSRecordType: a host address, DNSResponseType: No Error, DNS_TTL: 150, NAT_InitiatorPort: 22294, NAT_ResponderPort: 53, NAT_InitiatorIP: 4.3.2.1, NAT_ResponderIP: 8.7.6.5

%FTD-1-430003: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 5, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 35871, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 50158, DstPort: 443, Protocol: tcp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_INTERNET_ALL, Prefilter Policy: EXAMPLE L3-L4 Policy, User: Not Found, Client: SSL client, ApplicationProtocol: HTTPS, WebApplication: Trend Micro, ConnectionDuration: 0, InitiatorPackets: 10, ResponderPackets: 13, InitiatorBytes: 967, ResponderBytes: 5018, NAPPolicy: Balanced Security and Connectivity, SSLPolicy: None, SSLFlowStatus: Success, SSLCipherSuite: Unknown, SSLCertificate: 3ccc5ece59e81d905ed314c1e9af0f797393fec5, SSLVersion: Unknown, SSLServerCertStatus: Valid, SSLActualAction: Do Not Decrypt, SSLExpectedAction: Do Not Decrypt, SSLServerName: example.org, URLCategory: Computer Security, URLReputation: Trusted, URL: https://example.org, NAT_InitiatorPort: 36170, NAT_ResponderPort: 443, NAT_InitiatorIP: 4.3.2.1, NAT_ResponderIP: 8.7.6.5

%FTD-1-430003: EventPriority: Low, DeviceUUID: deyyyyy-844d-11e7-b104-8d1450667052, InstanceID: 1, FirstPacketSecond: 2023-08-23T12:59:00Z, ConnectionID: 55087, AccessControlRuleAction: Allow, SrcIP: 10.55.21.168, DstIP: 142.55.179.67, SrcPort: 77777, DstPort: 80, Protocol: tcp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_INTERNET_ALL, Prefilter Policy: LALALAND L3-L4 Policy, User: Not Found, UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.32 Safari/537.36, Client: Chrome, ClientVersion: 60.0.3112.32, ApplicationProtocol: HTTP, WebApplication: Google, ConnectionDuration: 0, InitiatorPackets: 5, ResponderPackets: 5, InitiatorBytes: 565, ResponderBytes: 484, NAPPolicy: Balanced Security and Connectivity, ReferencedHost: connectivitycheck.gstatic.com, URLCategory: Infrastructure and Content Delivery Networks, URLReputation: Favorable, URL: http://connectivitycheck.gstatic.com/generate_204, NAT_InitiatorPort: 77777, NAT_ResponderPort: 80, NAT_InitiatorIP: 194.55.57.195, NAT_ResponderIP: 142.55.179.67

Group <AnyConnect-SESAME> User <JD34242243> IP <1.2.3.4> AnyConnect session lost connection. Waiting to resume.

Task ran for 100 msec, Process = aaa_shim_thread, PC = abb111cc, Call stack =   0x000000aaab89d6a0  0x000000aaab88cdec  0x000000aaab88cd68

Group <MyGroup> User <MyUser> IP <4.3.2.1> IPv4 Address <1.2.3.4> IPv6 address <::> assigned to session

Group <MyGroup> User <MyUser> IP <4.3.2.1> IPv4 Address <> IPv6 address <3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6> assigned to session

Group <MYGROUP> User <JD34242243> IP <1.2.3.4> SVC closing connection: DPD failure.

Group <MyGroup> User <MyUsser> IP <1.2.3.4> Client Type: Cisco AnyConnect VPN Agent for Windows 4.10.07061

 Group <MyGroup> User <MyUsser> IP <1.2.3.4> Client Type: Cisco AnyConnect VPN Agent for Windows 4.10.07061

Group = MYGROUP, Username = JD34242243, IP = 1.2.3.4, Session disconnected. Session Type: SSL, Duration: 6h:33m:18s, Bytes xmt: 220870890, Bytes rcv: 57125392, Reason: Idle Timeout

Task ran for 109 msec, Process = aaa_shim_thread, PC = ade9333c, Call stack =   0x000000aaabb34820  0x000000aaabb2429c  0x000000aaabb24218

TunnelGroup <AnyConnect-SESAME> GroupPolicy <MYGROUP> User <JD34242243> IP <1.2.3.4> No IPv6 address available for SVC connection

Group <AnyConnect-EXAMPLE> User <MyUser> IP <1.2.3.4> AnyConnect session lost connection. Waiting to resume.

TunnelGroup <AnyConnect-EX> GroupPolicy <MyGroup> User <MyUser> IP <4.3.2.1> No IPv6 address available for SVC connection

Tunnel group search using certificate maps failed for peer certificate: serial number: 111111111111111111111111, subject name: UID=U11111111,CN=JOHN DOE,OU=Unit,O=URAAA,C=US, issuer_name: CN=Admin,OU=Unit,O=Example,C=US.

Detection section

The following section provides information for those who wish to learn more about the detection capabilities enabled by collecting this intake. It includes details about the built-in rule catalog, event categories, and ECS fields extracted from raw events. This is essential for users aiming to create custom detection rules, perform hunting activities, or pivot in the events page.

The following Sekoia.io built-in rules match the intake Cisco Secure Firewall. This documentation is updated automatically and is based solely on the fields used by the intake which are checked against our rules. This means that some rules will be listed but might not be relevant with the intake.

SEKOIA.IO x Cisco Secure Firewall on ATT&CK Navigator

Account Added To A Security Enabled Group

Detection in order to investigate who has added a specific Domain User in Domain Admins or Group Policy Creator Owners (Security event 4728)

  • Effort: master
Account Removed From A Security Enabled Group

Detection in order to investigate who has removed a specific Domain User in Domain Admins or Group Policy Creator Owners (Security event 4729)

  • Effort: master
Active Directory Data Export Using Csvde

Detects the use of Csvde, a command-line tool from Windows Server that can be used to export Active Directory data to CSV files. This export doesn't include password hashes, but can be used as a discovery tool to enumerate users, machines and group memberships.

  • Effort: elementary
AdFind Usage

Detects the usage of the AdFind tool. AdFind.exe is a free tool that extracts information from Active Directory. Wizard Spider (Bazar, TrickBot, Ryuk), FIN6 and MAZE operators have used AdFind.exe to collect information about Active Directory organizational units and trust objects

  • Effort: elementary
Adexplorer Usage

Detects the usage of Adexplorer, a legitimate tool from the Sysinternals suite that could be abused by attackers as it can saves snapshots of the Active Directory Database.

  • Effort: advanced
Advanced IP Scanner

Detects the use of Advanced IP Scanner. Seems to be a popular tool for ransomware groups.

  • Effort: master
Aspnet Compiler

Detects the starts of aspnet compiler.

  • Effort: advanced
Bazar Loader DGA (Domain Generation Algorithm)

Detects Bazar Loader domains based on the Bazar Loader DGA

  • Effort: elementary
Bloodhound and Sharphound Tools Usage

Detects default process names and default command line parameters used by Bloodhound and Sharphound tools.

  • Effort: intermediate
Burp Suite Tool Detected

Burp Suite is a cybersecurity tool. When used as a proxy service, its purpose is to intercept packets and modify them to send them to the server. Burp Collaborator is a network service that Burp Suite uses to help discover many kinds of vulnerabilities (vulnerabilities scanner).

  • Effort: intermediate
CVE-2017-11882 Microsoft Office Equation Editor Vulnerability

Detects the exploitation of CVE-2017-11882 vulnerability. The Microsoft Office Equation Editor has no reason to do a network request or drop an executable file. This requires a sysmon configuration with file and network events.

  • Effort: master
CVE-2018-11776 Apache Struts2

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible Remote Code Execution when alwaysSelectFullNamespace is true (either by user or a plugin like Convention Plugin) and then: results are used with no namespace and in same time, its upper package have no or wildcard namespace and similar to results, same possibility when using url tag which doesn't have value and action set and in same time, its upper package have no or wildcard namespace.

  • Effort: intermediate
CVE-2018-13379 Fortinet Exploit

Detects the successful exploitation of the Fortinet FortiOS CVE-2018-13379. This CVE is one of the most exploited CVEs since 2018. It is exploited by APT threat actors as well as cybercriminals. The exploitation of this CVE lead an unauthenticated user to get full access to FortiOS system file through SSL VPN via specially crafted HTTP resource requests. The exploit read /dev/cmdb/sslvpn_websession file, that contains login and passwords in (clear/text). An HTTP response status code = 200, means the file was successfully accessed. This vulnerability affects FortiOS 5.6.3 to 5.6.7 and FortiOS 6.0.0 to 6.0.4.

  • Effort: advanced
CVE-2019-0604 SharePoint

Detects the exploitation of the SharePoint vulnerability (CVE-2019-0604).

  • Effort: advanced
CVE-2019-11510 Pulse Secure Exploit

Detects the successful exploitation of the Pulse Secure vulnerability CVE-2019-11510. This CVE is one of the most exploited CVEs since 2019. It is exploited by diverse threat actors, leading sometimes in ransomware deployement among these groups: Maze, Conti, Egregor, DoppelPaymer, NetWalker and REvil. But also APT actors such as APT29. The exploitation of this CVE allows a remote, unauthenticated attacker to compromise a vulnerable VPN server. The attacker may be able to gain access to all active users and their plain-text credentials. It may also be possible for the attacker to execute arbitrary commands on each VPN client as it successfully connects to the VPN server. The exploit reads /etc/passwd file to get access to login and passwords in (clear/text). An HTTP response status code = 200, means the file was successfully accessed. This vulnerability affects 8.1R15.1, 8.2 before 8.2R12.1, 8.3 before 8.3R7.1, and 9.0 before 9.0R3.4 products.

  • Effort: elementary
CVE-2019-19781 Citrix NetScaler (ADC)

Detects CVE-2019-19781 exploitation attempt against Citrix NetScaler (ADC), Application Delivery Controller and Citrix Gateway Attack.

  • Effort: elementary
CVE-2019-2725 Oracle Weblogic Exploit

Detects the successful exploitation of a deserialization vulnerability in Oracle Weblogic Server, CVE-2019-2725. This vulnerability affects versions 10.X and 12.1.3 of WebLogic that have the components wls9_async_response.war and wls-wsat.war enabled. It is a remote code execution which can be exploited without authentication via HTTP. An HTTP response status code = 202, means the target is vulnerable, the analyst then has to look in depth to check if a webshell has been uploaded or something else has been done.

  • Effort: elementary
CVE-2020-0688 Microsoft Exchange Server Exploit

Detects the exploitation of CVE-2020-0688. The POC exploit a .NET serialization vulnerability in the Exchange Control Panel (ECP) web page. The vulnerability is due to Microsoft Exchange Server not randomizing the keys on a per-installation basis resulting in them using the same validationKey and decryptionKey values. With knowledge of these, values an attacker can craft a special viewstate to use an OS command to be executed by NT_AUTHORITY\SYSTEM using .NET deserialization. To exploit this vulnerability, an attacker needs to leverage the credentials of an account it had already compromised to authenticate to OWA.

  • Effort: elementary
CVE-2020-1147 SharePoint

Detection of SharePoint vulnerability CVE-2020-1147.

  • Effort: advanced
CVE-2020-14882 Oracle WebLogic Server

Detects the exploitation of the Oracle WebLogic Server vulnerability (CVE-2020-16952).

  • Effort: advanced
CVE-2020-17530 Apache Struts RCE

Detects the exploitation of the Apache Struts RCE vulnerability (CVE-2020-17530).

  • Effort: intermediate
CVE-2020-5902 F5 BIG-IP Exploitation Attempts

Detects the exploitation attempt of the vulnerability found in F5 BIG-IP and described in CVE-2020-5902.

  • Effort: elementary
CVE-2021-20021 SonicWall Unauthenticated Administrator Access

Detects the exploitation of SonicWall Unauthenticated Admin Access.

  • Effort: advanced
CVE-2021-20023 SonicWall Arbitrary File Read

Detects Arbitrary File Read, which can be used with other vulnerabilities as a mean to obtain outputs generated by attackers, or sensitive data.

  • Effort: advanced
CVE-2021-21972 VMware vCenter

The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2). POST request on the following PATH "/ui/vropspluginui/rest/services/uploadova". If in response body (500) the words it has "uploadFile", that means the vCenter is available to accept files via POST without any restrictions.

  • Effort: intermediate
CVE-2021-21985 VMware vCenter

The VMware vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.0 before 7.0 U2b, 6.7 before 6.7 U3n and 6.5 before 6.5 U3p) and VMware Cloud Foundation (4.x before 4.2.1 and 3.x before 3.10.2.1).

  • Effort: advanced
CVE-2021-22123 Fortinet FortiWeb OS Command Injection

Detects Fortinet FortiWeb OS Command Injection (August 2021) vulnerability exploitation attempt. A remote, authenticated attacker can execute arbitrary commands on the system hosting a vulnerable FortiWeb WAF by sending a POST request with the command in the name field. At the time of writing this rule, it would appear that the request would respond in code 500 for a successful exploitation attempt.

  • Effort: advanced
CVE-2021-22893 Pulse Connect Secure RCE Vulnerability

Detects potential exploitation of the authentication by-pass vulnerability that can allow an unauthenticated user to perform remote arbitrary file execution on the Pulse Connect Secure gateway. It is highly recommended to apply the Pulse Secure mitigations and seach for indicators of compromise on affected servers if you are in doubt over the integrity of your Pulse Connect Secure product.

  • Effort: intermediate
CVE-2021-26855 Exchange SSRF

Detects the exploitation of ProyxLogon vulerability on Exchange servers.

  • Effort: advanced
CVE-2021-34473 ProxyShell Attempt

Detects CVE-2021-34473 ProxyShell attempt against Microsoft Exchange Server, Remote Code Execution Vulnerability.

  • Effort: advanced
CVE-2021-41773 Apache 2.4.49 Path Traversal

Detects successful exploitation of the Apache Path Traversal CVE-2021-41773.

  • Effort: advanced
CVE-2021-43798 Grafana Directory Traversal

Grafana version 8.x has a 0day arbitrary file read (with no fix yet) based on a directory traversal vulnerability

  • Effort: intermediate
Certificate Authority Modification

Installation of new certificate(s) in the Certificate Authority can be used to trick user when spoofing website or to add trusted destinations.

  • Effort: master
Certify Or Certipy

Detects the use of certify and certipy which are two different tools used to enumerate and abuse Active Directory Certificate Services.

  • Effort: advanced
Cobalt Strike Default Beacons Names

Detects the default names of Cobalt Strike beacons / payloads.

  • Effort: intermediate
Cobalt Strike HTTP Default GET beaconing

Detects GET HTTP queries from known Cobalt Strike beacons (source code 4.3)

  • Effort: advanced
Cobalt Strike HTTP Default POST Beaconing

Detects POST HTTP queries from known Cobalt Strike beacons (source code 4.3)

  • Effort: advanced
Computer Account Deleted

Detects computer account deletion.

  • Effort: master
Correlation Potential DNS Tunnel

Detects domain name which is longer than 95 characters. Long domain names are distinctive of DNS tunnels.

  • Effort: advanced
Covenant Default HTTP Beaconing

Detects potential Covenant communications through the user-agent and specific urls

  • Effort: intermediate
Credential Dump Tools Related Files

Detects processes or file names related to credential dumping tools and the dropped files they generate by default.

  • Effort: advanced
Cryptomining

Detection of domain names potentially related to cryptomining activities.

  • Effort: master
DNS Query For Iplookup

Detects dns query of observables tagged as iplookup.

  • Effort: master
Detect requests to Konni C2 servers

This rule detects requests to Konni C2 servers. These patterns come from an analysis done in 2022, September.

  • Effort: elementary
Discord Suspicious Download

Discord is a messaging application. It allows users to create their own communities to share messages and attachments. Those attachments have little to no overview and can be downloaded by almost anyone, which has been abused by attackers to host malicious payloads.

  • Effort: intermediate
Discovery Commands Correlation

Detects some frequent discovery commands used by some ransomware operators.

  • Effort: intermediate
Domain Trust Created Or Removed

A trust was created or removed to a domain. An attacker could perform that in order to do lateral movement easily between domains or shutdown the ability of two domains to communicate.

  • Effort: advanced
Download Files From Suspicious TLDs

Detects download of certain file types from hosts in suspicious TLDs

  • Effort: master
Dynamic DNS Contacted

Detect communication with dynamic dns domain. This kind of domain is often used by attackers. This rule can trigger false positive in non-controlled environment because dynamic dns is not always malicious.

  • Effort: master
EvilProxy Phishing Domain

Detects subdomains potentially generated by the EvilProxy adversary-in-the-middle phishing platform. Inspect the other subdomains of the domain to identify the landing page, and determine if the user submitted credentials. This rule has a small percentage of false positives on legitimate domains.

  • Effort: intermediate
Exfiltration And Tunneling Tools Execution

Execution of well known tools for data exfiltration and tunneling

  • Effort: advanced
Exfiltration Domain

Detects traffic toward a domain flagged as a possible exfiltration vector.

  • Effort: master
FoggyWeb HTTP Default GET/POST Requests

Detects GET or POST request pattern observed within the first FoggyWeb campaign detected by Microsoft.

  • Effort: advanced
GitLab CVE-2021-22205

Detects GitLab vulnerability CVE-2021-22205 exploitation success. It allows an attacker to do some remote code execution with user git. The HTTP return code 422 indicates a successfull exploitation.

  • Effort: intermediate
HTA Infection Chains

Detect the creation of a ZIP file and an HTA file as it is often used in infection chains. Furthermore it also detects the use of suspicious processes launched by explorer.exe combined with the creation of an HTA file, since it is also often used in infection chains (LNK - HTA for instance).

  • Effort: intermediate
HTML Smuggling Suspicious Usage

Based on several samples from different botnets, this rule aims at detecting HTML infection chain by looking for HTML created files followed by suspicious files being executed.

  • Effort: intermediate
HackTools Suspicious Names

Quick-win rule to detect the default process names or file names of several HackTools.

  • Effort: elementary
ISO LNK Infection Chain

Detection of an ISO (or any other similar archive file) downloaded file, followed by a child-process of explorer, which is characteristic of an infection using an ISO containing an LNK file. For events with host.name.

  • Effort: intermediate
Internet Scanner

Detects known scanner IP addresses. Alert is only raised when the scan hits an opened port, on TCP or UDP. This could be a very noisy rule, so be careful to check your detection perimeter before activation.

  • Effort: master
Internet Scanner Target

Detects known scanner IP addresses. Alert is only raised when the scan hits an opened port, on TCP or UDP and group by target address. This could be a very noisy rule, so be careful to check your detection perimeter before activation.

  • Effort: master
Kernel Module Alteration

Kernel module installation can be used to configure system settings to automatically execute a program during system boot or logon to maintain persistence or gain higher-level privileges on compromised systems. The prerequisites are to enable monitoring of the finit_module, init_module, delete_module syscalls using Auditbeat.

  • Effort: advanced
Koadic MSHTML Command

Detects Koadic payload using MSHTML module

  • Effort: intermediate
LokiBot Default C2 URL

Detects default C2 URL for trojan LokiBot

  • Effort: elementary
MSBuild Abuse

Detection of MSBuild uses by attackers to infect an host. Focuses on XML compilation which is a Metasploit payload, and on connections made by this process which is unusual.

  • Effort: intermediate
Microsoft Exchange Server Creating Unusual Files

Look for Microsoft Exchange Server’s Unified Messaging service creating non-standard content on disk, which could indicate web shells or other malicious content, suggesting exploitation of CVE-2021-26858 vulnerability

  • Effort: intermediate
Network Connection Via Certutil

Identifies certutil.exe making a network connection. Adversaries could abuse certutil.exe to download a certificate, or malware, from a remote URL. The rule excludes private IP addresses and IPV6. This requires Sysmon logging.

  • Effort: intermediate
Network Scanning and Discovery

Tools and command lines used for network discovery from current system

  • Effort: advanced
Network Sniffing

List of common tools used for network packages sniffing

  • Effort: advanced
Network Sniffing Windows

Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection. An adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.

  • Effort: intermediate
Nimbo-C2 User Agent

Nimbo-C2 Uses an unusual User-Agent format in its implants.

  • Effort: intermediate
NlTest Usage

Detects attempts to gather information on domain trust relationships that may be used to identify lateral movement opportunities. These command lines were observed in numerous attacks, but also sometimes from legitimate administrators for debugging purposes. The rule does not cover very basics commands but rather the ones that are interesting for attackers to gather information on a domain.

  • Effort: advanced
Password Change On Directory Service Restore Mode (DSRM) Account

The Directory Service Restore Mode (DSRM) account is a local administrator account on Domain Controllers. Attackers may change the password to gain persistence.

  • Effort: intermediate
PasswordDump SecurityXploded Tool

Detects the execution of the PasswordDump SecurityXploded Tool

  • Effort: elementary
Possible Malicious File Double Extension

Detects request to potential malicious file with double extension

  • Effort: elementary
Possible Replay Attack

This event can be a sign of Kerberos replay attack or, among other things, network device configuration or routing problems.

  • Effort: intermediate
Potential Azure AD Phishing Page (Adversary-in-the-Middle)

Detects an HTTP request to an URL typical of the Azure AD authentication flow, but towards a domain that is not one the legitimate Microsoft domains used for Azure AD authentication.

  • Effort: intermediate
Potential Bazar Loader User-Agents

Detects potential Bazar loader communications through the user-agent

  • Effort: elementary
Potential DNS Tunnel

Detects domain name which is longer than 95 characters. Long domain names are distinctive of DNS tunnels.

  • Effort: advanced
Potential Lemon Duck User-Agent

Detects LemonDuck user agent. The format used two sets of alphabetical characters separated by dashes, for example "User-Agent: Lemon-Duck-[A-Z]-[A-Z]".

  • Effort: elementary
Potential LokiBot User-Agent

Detects potential LokiBot communications through the user-agent

  • Effort: intermediate
Privilege Escalation Awesome Scripts (PEAS)

Detect PEAS privileges escalation scripts and binaries

  • Effort: elementary
ProxyShell Microsoft Exchange Suspicious Paths

Detects suspicious calls to Microsoft Exchange resources, in locations related to webshells observed in campaigns using this vulnerability.

  • Effort: elementary
PsExec Process

Detects PsExec execution, command line which contains pstools or installation of the PsExec service. PsExec is a SysInternals which can be used to execute a program on another computer. The tool is as much used by attackers as by administrators.

  • Effort: advanced
RDP Configuration File From Mail Process

Detects RDP configuration file being created or executed by a Mail-related process like Outlook. RDP configuration file will allow, when opened, an user to connect to the configured server easily. Attackers use this to trick victims in order to get a shared drive and potentially retrieve the data from that drive, but also drop a malicious file on the drive to establish persistence. Using RDP can also expose the victim's credential and clipboard data on some cases.

  • Effort: advanced
RDP Session Discovery

Detects use of RDP session discovery via qwinsta or quser. Used by some threat actors to know if someone is working via RDP on a server.

  • Effort: advanced
RSA SecurID Failed Authentification

Detects many failed attempts to authenticate followed by a successfull login for a super admin account.

  • Effort: advanced
RTLO Character

Detects RTLO (Right-To-Left character) in file and process names.

  • Effort: elementary
Raccoon Stealer 2.0 Legitimate Third-Party DLL Download URL

Detects Raccoon Stealer 2.0 malware downloading legitimate third-party DLLs from its C2 server. These legitimate DLLs are used by the information stealer to collect data on the compromised hosts.

  • Effort: elementary
Remote Access Tool Domain

Detects traffic toward a domain flagged as a Remote Administration Tool (RAT).

  • Effort: master
Remote Monitoring and Management Software - AnyDesk

Detect artifacts related to the installation or execution of the Remote Monitoring and Management tool AnyDesk.

  • Effort: master
Remote Monitoring and Management Software - Atera

Detect artifacts related to the installation or execution of the Remote Monitoring and Management tool Atera.

  • Effort: master
SEKOIA.IO Intelligence Feed

Detect threats based on indicators of compromise (IOCs) collected by SEKOIA's Threat and Detection Research team.

  • Effort: elementary
Sekoia.io EICAR Detection

Detects observables in Sekoia.io CTI tagged as EICAR, which are fake samples meant to test detection.

  • Effort: master
SharePoint Authenticated SSRF

Detects succesful SSRF from an authenticated SharePoint user.

  • Effort: elementary
Sliver DNS Beaconing

Detects suspicious DNS queries known from Sliver beaconing

  • Effort: intermediate
Socat Relaying Socket

Socat is a linux tool used to relay local socket or internal network connection, this technics is often used by attacker to bypass security equipment such as firewall

  • Effort: advanced
Socat Reverse Shell Detection

Socat is a linux tool used to relay or open reverse shell that is often used by attacker to bypass security equipment.

  • Effort: intermediate
SolarWinds Suspicious File Creation

Detects SolarWinds process creating a file with a suspicious extension. The process solarwinds.businesslayerhost.exe created an unexpected file whose extension is ".exe", ".ps1", ".jpg", ".png" or ".dll".

  • Effort: intermediate
Suspicious Double Extension

Detects suspicious use of an .exe extension after a non-executable file extension like .pdf.exe, a set of spaces or underlines to cloak the executable file in spearphishing campaigns

  • Effort: advanced
Suspicious Download Links From Legitimate Services

Detects users clicking on Google docs links to download suspicious files. This technique was used a lot by Bazar Loader in the past.

  • Effort: intermediate
Suspicious File Name

Detects suspicious file name possibly linked to malicious tool.

  • Effort: advanced
Suspicious PROCEXP152.sys File Created In Tmp

Detects the creation of the PROCEXP152.sys file in the application-data local temporary folder. This driver is used by Sysinternals Process Explorer but also by KDU (https://github.com/hfiref0x/KDU) or Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs), which uses KDU. Note - Clever attackers may easily bypass this detection by just renaming the driver filename. Therefore just Medium-level and don't rely on it.

  • Effort: advanced
Suspicious TOR Gateway

Detects suspicious TOR gateways. Gateways are often used by the victim to pay and decrypt the encrypted files without installing TOR. Tor intercepts the network traffic from one or more apps on user’s computer, usually the user web browser, and shuffles it through a number of randomly-chosen computers before passing it on to its destination. This disguises user location, and makes it harder for servers to pick him/her out on repeat visits, or to tie together separate visits to different sites, this making tracking and surveillance more difficult. Before a network packet starts its journey, user’s computer chooses a random list of relays and repeatedly encrypts the data in multiple layers, like an onion. Each relay knows only enough to strip off the outermost layer of encryption, before passing what’s left on to the next relay in the list.

  • Effort: advanced
Suspicious URI Used In A Lazarus Campaign

Detects suspicious requests to a specific URI, usually on an .asp page. The website is often compromised.

  • Effort: intermediate
Suspicious Windows DNS Queries

Detects a suspicious Windows command-line process making a DNS query via known abuse text paste web services. This is based on Microsoft Windows Sysmon events (Event ID 22).

  • Effort: advanced
System Info Discovery

System info discovery, attempt to detects basic command use to fingerprint a host.

  • Effort: master
TOR Usage

Detects TOR usage, based on the IP address and the destination port (filtered on NTP). TOR is short for The Onion Router, and it gets its name from how it works. TOR intercepts the network traffic from one or more apps on user’s computer, usually the user web browser, and shuffles it through a number of randomly-chosen computers before passing it on to its destination. This disguises user location, and makes it harder for servers to pick him/her out on repeat visits, or to tie together separate visits to different sites, this making tracking and surveillance more difficult. Before a network packet starts its journey, user’s computer chooses a random list of relays and repeatedly encrypts the data in multiple layers, like an onion. Each relay knows only enough to strip off the outermost layer of encryption, before passing what’s left on to the next relay in the list.

  • Effort: master
TOR Usage Generic Rule

Detects TOR usage globally, whether the IP is a destination or source. TOR is short for The Onion Router, and it gets its name from how it works. TOR intercepts the network traffic from one or more apps on user’s computer, usually the user web browser, and shuffles it through a number of randomly-chosen computers before passing it on to its destination. This disguises user location, and makes it harder for servers to pick him/her out on repeat visits, or to tie together separate visits to different sites, this making tracking and surveillance more difficult. Before a network packet starts its journey, user’s computer chooses a random list of relays and repeatedly encrypts the data in multiple layers, like an onion. Each relay knows only enough to strip off the outermost layer of encryption, before passing what’s left on to the next relay in the list.

  • Effort: master
Telegram Bot API Request

Detects suspicious DNS queries to api.telegram.org used by Telegram Bots of any kind

  • Effort: advanced
TrevorC2 HTTP Communication

Detects TrevorC2 HTTP communication based on the HTTP request URI and the user-agent.

  • Effort: elementary
User Account Created

Detects user creation on windows servers, which shouldn't happen in an Active Directory environment. Apply this on your windows server logs and not on your DC logs. One default account defaultuser0 is excluded as only used during Windows set-up. This detection use Security Event ID 4720.

  • Effort: master
User Account Deleted

Detects local user deletion

  • Effort: master
WCE wceaux.dll Creation

Detects wceaux.dll creation while Windows Credentials Editor (WCE) is executed.

  • Effort: intermediate
ZIP LNK Infection Chain

Detection of an ZIP download followed by a child-process of explorer, followed by multiple Windows processes.This is widely used as an infection chain mechanism.

  • Effort: advanced

Event Categories

The following table lists the data source offered by this integration.

Data Source Description
Host network interface every packets are logged and information on the outcome, the source/destination are extracted
Network device logs ACL logs are examined in detail
Network protocol analysis ICMP, TCP and UDP packets are fully analyzed
Web proxy Cisco Web Security Appliance logs provide information about the connected client and the requested resource
Web logs Cisco Web Security Appliance logs provide information about the connected client and the requested resource

In details, the following table denotes the type of events produced by this integration.

Name Values
Kind alert
Category authentication, file, intrusion_detection, malware, network
Type change, connection, end, info, start

Transformed Events Samples after Ingestion

This section demonstrates how the raw logs will be transformed by our parsers. It shows the extracted fields that will be available for use in the built-in detection rules and hunting activities in the events page. Understanding these transformations is essential for analysts to create effective detection mechanisms with custom detection rules and to leverage the full potential of the collected data.

{
    "message": "%FTD-2-106001: Inbound TCP connection denied from 172.16.10.234/901 to 192.168.122.55/111 flags SYN  on interface LAN",
    "event": {
        "category": [
            "network"
        ],
        "code": "106001"
    },
    "action": {
        "name": "denied",
        "target": "network-traffic"
    },
    "destination": {
        "address": "192.168.122.55",
        "ip": "192.168.122.55",
        "port": 111
    },
    "network": {
        "direction": "Inbound",
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "172.16.10.234",
            "192.168.122.55"
        ]
    },
    "source": {
        "address": "172.16.10.234",
        "ip": "172.16.10.234",
        "port": 901
    }
}

{
    "message": "%FTD-2-106006: Deny inbound UDP from 172.16.10.234/901 to 192.168.122.55/111 on interface LAN",
    "event": {
        "category": [
            "network"
        ],
        "code": "106006"
    },
    "action": {
        "name": "deny",
        "target": "network-traffic"
    },
    "destination": {
        "address": "192.168.122.55",
        "ip": "192.168.122.55",
        "port": 111
    },
    "network": {
        "direction": "inbound",
        "transport": "udp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "172.16.10.234",
            "192.168.122.55"
        ]
    },
    "source": {
        "address": "172.16.10.234",
        "ip": "172.16.10.234",
        "port": 901
    }
}

{
    "message": "%NGIPS-1-430002: EventPriority: Low, DeviceUUID: b2433c5c-a6a1-11eb-a6e7-be0b9833091f, InstanceID: 2, FirstPacketSecond: 2021-04-30T11:31:19Z, ConnectionID: 4, AccessControlRuleAction: Allow, SrcIP: 172.16.10.10, DstIP: 172.16.20.10, ICMPType: Echo Request, ICMPCode: No Code, Protocol: icmp, IngressInterface: inside, EgressInterface: outside, ACPolicy: Default Allow All Traffic, AccessControlRuleName: test, Client: ICMP client, ApplicationProtocol: ICMP, InitiatorPackets: 1, ResponderPackets: 0, InitiatorBytes: 74, ResponderBytes: 0, NAPPolicy: Balanced Security and Connectivity",
    "event": {
        "action": "connection-started",
        "category": [
            "network"
        ],
        "code": "430002",
        "type": [
            "connection",
            "start"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "Allow"
        },
        "device_id": "b2433c5c-a6a1-11eb-a6e7-be0b9833091f"
    },
    "destination": {
        "address": "172.16.20.10",
        "bytes": 0,
        "ip": "172.16.20.10",
        "packets": 0
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "application": "icmp client",
        "protocol": "ICMP",
        "transport": "icmp"
    },
    "observer": {
        "product": "Secure IPS",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "172.16.10.10",
            "172.16.20.10"
        ]
    },
    "rule": {
        "name": "test",
        "ruleset": "Default Allow All Traffic"
    },
    "source": {
        "address": "172.16.10.10",
        "bytes": 74,
        "ip": "172.16.10.10",
        "packets": 1
    }
}

{
    "message": "%NGIPS-1-430003: EventPriority: Low, DeviceUUID: e8566508-eaa9-11e5-860f-de3e305d8269, InstanceID: 3, FirstPacketSecond: 2020-02-04T08:45:34Z, ConnectionID: 34774, AccessControlRuleAction: <br/>Block with reset, SrcIP: 93.157.158.93, DstIP: 10.1.9.9, SrcPort: 13723, DstPort: 80, Protocol: tcp, IngressInterface: outside, EgressInterface: seversDMZ, ACPolicy: Basic IPS/IDS and GeoIP block foreign contries, AccessControlRuleName: GeoBlock other Countries, Prefilter Policy: Unknown, ConnectionDuration: 0, InitiatorPackets: 1, ResponderPackets: 0, InitiatorBytes: 54, ResponderBytes: 0, NAPPolicy: Balanced Security and Connectivity",
    "event": {
        "action": "connection-finished",
        "category": [
            "network"
        ],
        "code": "430003",
        "type": [
            "connection",
            "end"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "<br/>Block with reset"
        },
        "device_id": "e8566508-eaa9-11e5-860f-de3e305d8269"
    },
    "destination": {
        "address": "10.1.9.9",
        "bytes": 0,
        "ip": "10.1.9.9",
        "packets": 0,
        "port": 80
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "transport": "tcp"
    },
    "observer": {
        "product": "Secure IPS",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.1.9.9",
            "93.157.158.93"
        ]
    },
    "rule": {
        "name": "GeoBlock other Countries",
        "ruleset": "Basic IPS/IDS and GeoIP block foreign contries"
    },
    "source": {
        "address": "93.157.158.93",
        "bytes": 54,
        "ip": "93.157.158.93",
        "packets": 1,
        "port": 13723
    }
}

{
    "message": "%FTD-1-430005: SrcIP: 10.0.1.20, DstIP: 81.2.69.144, SrcPort: 46004, DstPort: 80, Protocol: tcp, FileDirection: Download, FileAction: Malware Cloud Lookup, FileSHA256: 2546dcffc5ad854d4ddc64fbf056871cd5a00f2471cb7a5bfd4ac23b6e9eedad, SHA_Disposition: Unavailable, SperoDisposition: Spero detection not performed on file, ThreatName: Win.Ransomware.Eicar::95.sbx.tg, FileName: eicar_com.zip, FileType: ZIP, FileSize: 184, ApplicationProtocol: HTTP, Client: cURL, User: No Authentication Required, FirstPacketSecond: 2019-08-16T09:39:02Z, FilePolicy: malware-and-file-policy, FileStorageStatus: Not Stored (Disposition Was Pending), FileSandboxStatus: File Size Is Too Small, URI: http://www.eicar.org/download/eicar_com.zip",
    "event": {
        "action": "malware-detected",
        "category": [
            "malware"
        ],
        "code": "430005",
        "kind": "alert",
        "type": [
            "info"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "file_sandbox_status": "File Size Is Too Small",
            "file_storage_status": "Not Stored (Disposition Was Pending)",
            "sha_disposition": "Unavailable",
            "spero_disposition": "Spero detection not performed on file"
        }
    },
    "destination": {
        "address": "81.2.69.144",
        "ip": "81.2.69.144",
        "port": 80
    },
    "file": {
        "extension": "zip",
        "hash": {
            "sha256": "2546dcffc5ad854d4ddc64fbf056871cd5a00f2471cb7a5bfd4ac23b6e9eedad"
        },
        "name": "eicar_com.zip",
        "size": 184
    },
    "network": {
        "application": "curl",
        "protocol": "HTTP",
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "hash": [
            "2546dcffc5ad854d4ddc64fbf056871cd5a00f2471cb7a5bfd4ac23b6e9eedad"
        ],
        "ip": [
            "10.0.1.20",
            "81.2.69.144"
        ],
        "user": [
            "No Authentication Required"
        ]
    },
    "source": {
        "address": "10.0.1.20",
        "ip": "10.0.1.20",
        "port": 46004
    },
    "threat": {
        "software": {
            "name": "Win.Ransomware.Eicar::95.sbx.tg"
        }
    },
    "url": {
        "domain": "www.eicar.org",
        "original": "http://www.eicar.org/download/eicar_com.zip",
        "path": "/download/eicar_com.zip",
        "port": 80,
        "registered_domain": "eicar.org",
        "scheme": "http",
        "subdomain": "www",
        "top_level_domain": "org"
    },
    "user": {
        "name": "No Authentication Required"
    }
}

{
    "message": "%ASA-6-106012: Deny IP from 192.168.122.143 to 224.0.0.22, IP options: \"Router Alert\"",
    "event": {
        "category": [
            "network"
        ],
        "code": "106012",
        "reason": "IP options: \"Router Alert\""
    },
    "action": {
        "name": "deny",
        "target": "network-traffic"
    },
    "destination": {
        "address": "224.0.0.22",
        "ip": "224.0.0.22"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "192.168.122.143",
            "224.0.0.22"
        ]
    },
    "source": {
        "address": "192.168.122.143",
        "ip": "192.168.122.143"
    }
}

{
    "message": "%ASA-6-106015: Deny TCP (no connection) from 10.9.4.3/52675 to 161.5.222.141/443 flags FIN ACK on interface ACME_interface",
    "event": {
        "category": [
            "network"
        ],
        "code": "106015",
        "reason": "no connection"
    },
    "action": {
        "name": "deny",
        "target": "network-traffic"
    },
    "destination": {
        "address": "161.5.222.141",
        "ip": "161.5.222.141",
        "port": 443
    },
    "network": {
        "transport": "tcp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.9.4.3",
            "161.5.222.141"
        ]
    },
    "source": {
        "address": "10.9.4.3",
        "ip": "10.9.4.3",
        "port": 52675
    }
}

{
    "message": "%ASA-4-106023: Deny udp src ACMEsL:10.0.200.29/320 dst identity:224.0.1.129/320 by access-group \"ACME_group\" [0x0, 0x0]",
    "event": {
        "category": [
            "network"
        ],
        "code": "106023",
        "reason": "ACME_group"
    },
    "action": {
        "name": "deny",
        "target": "network-traffic"
    },
    "destination": {
        "address": "224.0.1.129",
        "ip": "224.0.1.129",
        "port": 320
    },
    "network": {
        "transport": "udp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.0.200.29",
            "224.0.1.129"
        ]
    },
    "source": {
        "address": "10.0.200.29",
        "ip": "10.0.200.29",
        "port": 320
    }
}

{
    "message": "%ASA-6-106100: access-list ACME_INFRA permitted udp ACME_INFRA/10.1.0.16(42592) -> ACME/10.1.1.76(161) hit-cnt 1 first hit [0x42666c4c, 0x05739900]",
    "event": {
        "category": [
            "network"
        ],
        "code": "106100",
        "reason": "ACME_INFRA"
    },
    "action": {
        "name": "permitted",
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.1.1.76",
        "ip": "10.1.1.76",
        "port": 161
    },
    "network": {
        "transport": "udp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.1.0.16",
            "10.1.1.76"
        ]
    },
    "source": {
        "address": "10.1.0.16",
        "ip": "10.1.0.16",
        "port": 42592
    }
}

{
    "message": "%ASA-6-110003: Routing failed to locate next hop for icmp from WAN:10.11.0.2/0 to WAN:10.112.115.1/0",
    "event": {
        "category": [
            "network"
        ],
        "code": "110003"
    },
    "action": {
        "name": "routing failed to locate next hop for icmp",
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.112.115.1",
        "ip": "10.112.115.1"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.11.0.2",
            "10.112.115.1"
        ]
    },
    "source": {
        "address": "10.11.0.2",
        "ip": "10.11.0.2"
    }
}

{
    "message": "%ASA-5-111007: Begin configuration: 10.24.25.21 reading from http [POST]",
    "event": {
        "category": [
            "network"
        ],
        "code": "111007"
    },
    "action": {
        "name": "begin configuration",
        "target": "network-traffic"
    },
    "network": {
        "transport": "http"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.24.25.21"
        ]
    },
    "source": {
        "address": "10.24.25.21",
        "ip": "10.24.25.21"
    }
}

{
    "message": "%ASA-5-111008: User 'admintufin' executed the 'login' command",
    "event": {
        "category": [
            "network"
        ],
        "code": "111008"
    },
    "action": {
        "name": "login",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "user": [
            "admintufin"
        ]
    },
    "user": {
        "name": "admintufin"
    }
}

{
    "message": "%ASA-6-113004: AAA user authentication Successful : server = 10.79.48.28 : user = jdoe001566",
    "event": {
        "category": [
            "authentication"
        ],
        "code": "113004",
        "outcome": "success",
        "type": [
            "start"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.79.48.28",
        "ip": "10.79.48.28"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.79.48.28"
        ],
        "user": [
            "jdoe001566"
        ]
    },
    "user": {
        "name": "jdoe001566"
    }
}

{
    "message": "%ASA-6-113012: AAA user authentication Successful : local database : user = admintufin",
    "event": {
        "category": [
            "authentication"
        ],
        "code": "113012",
        "outcome": "success",
        "type": [
            "start"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "user": [
            "admintufin"
        ]
    },
    "user": {
        "name": "admintufin"
    }
}

{
    "message": "%ASA-7-199019: Mar  6 21:58:53 Ipc[1234]: func return 1#012",
    "event": {
        "action": "return 1#012",
        "category": [
            "network"
        ],
        "code": "199019"
    },
    "action": {
        "target": "network-traffic"
    },
    "host": {
        "name": "func"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "process": {
        "name": "Ipc",
        "pid": 1234
    }
}

{
    "message": "%ASA-6-302013: Built inbound TCP connection 1800234408 for TTA-ACME-VDO_CAM:10.1.7.248/40454 (10.1.7.248/40454) to TTA-ACME-SRV_INFRA:10.1.0.10/53 (10.1.0.10/53)",
    "event": {
        "category": [
            "network"
        ],
        "code": "302013"
    },
    "action": {
        "name": "built",
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.1.0.10",
        "ip": "10.1.0.10",
        "nat": {
            "ip": "10.1.0.10",
            "port": 53
        },
        "port": 53
    },
    "network": {
        "direction": "inbound",
        "transport": "tcp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.1.0.10",
            "10.1.7.248"
        ]
    },
    "source": {
        "address": "10.1.7.248",
        "ip": "10.1.7.248",
        "nat": {
            "ip": "10.1.7.248",
            "port": 40454
        },
        "port": 40454
    }
}

{
    "message": "%ASA-6-302014: Teardown TCP connection 3642851852 for outside:9.27.0.93/63677 to Pika:172.17.1.200/443 duration 0:10:06 bytes 4666 FIN Timeout from Pika",
    "event": {
        "category": [
            "network"
        ],
        "code": "302014"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "destination": {
        "address": "172.17.1.200",
        "ip": "172.17.1.200",
        "port": 443
    },
    "network": {
        "bytes": 4666,
        "transport": "tcp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "172.17.1.200",
            "9.27.0.93"
        ]
    },
    "source": {
        "address": "9.27.0.93",
        "ip": "9.27.0.93",
        "port": 63677
    }
}

{
    "message": "%ASA-6-302020: Built inbound ICMP connection for faddr 47.241.116.84/10800 gaddr 10.11.0.2/0 laddr 10.11.0.2/0",
    "event": {
        "category": [
            "network"
        ],
        "code": "302020"
    },
    "action": {
        "name": "built",
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.11.0.2",
        "ip": "10.11.0.2",
        "port": 0
    },
    "network": {
        "direction": "inbound",
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.11.0.2",
            "47.241.116.84"
        ]
    },
    "source": {
        "address": "47.241.116.84",
        "ip": "47.241.116.84",
        "port": 10800
    }
}

{
    "message": "%ASA-6-302020: Built inbound ICMP connection for faddr 1.2.3.4/1(LOCAL\\USER) gaddr 1.2.3.5/0 laddr 1.2.3.5/0 (USER) type 8 code 0",
    "event": {
        "category": [
            "network"
        ],
        "code": "302020"
    },
    "action": {
        "name": "built",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "0",
            "icmp_type": "8"
        }
    },
    "destination": {
        "address": "1.2.3.5",
        "ip": "1.2.3.5",
        "port": 0
    },
    "network": {
        "direction": "inbound",
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "1.2.3.5"
        ],
        "user": [
            "USER"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "port": 1
    },
    "user": {
        "domain": "LOCAL",
        "name": "USER"
    }
}

{
    "message": "%ASA-6-302021: Teardown ICMP connection for faddr 172.16.10.208/2189 gaddr 172.16.19.90/0 laddr 172.16.19.90/0 (karibou)",
    "event": {
        "category": [
            "network"
        ],
        "code": "302021"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "destination": {
        "address": "172.16.19.90",
        "ip": "172.16.19.90",
        "port": 0
    },
    "network": {
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "172.16.10.208",
            "172.16.19.90"
        ],
        "user": [
            "karibou"
        ]
    },
    "source": {
        "address": "172.16.10.208",
        "ip": "172.16.10.208",
        "port": 2189
    },
    "user": {
        "name": "karibou"
    }
}

{
    "message": "%ASA-6-302021: Teardown ICMP connection for faddr 1.2.3.4/25481 gaddr 1.2.4.3/0 laddr 1.2.4.3/0 type 8 code 0",
    "event": {
        "category": [
            "network"
        ],
        "code": "302021"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "0",
            "icmp_type": "8"
        }
    },
    "destination": {
        "address": "1.2.4.3",
        "ip": "1.2.4.3",
        "port": 0
    },
    "network": {
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "1.2.4.3"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "port": 25481
    }
}

{
    "message": "%ASA-6-302020: Built inbound ICMP connection for faddr 1.2.3.4/14 gaddr 172.1.1.1/0 laddr 172.1.1.2/0 type 8 code 0",
    "event": {
        "category": [
            "network"
        ],
        "code": "302020"
    },
    "action": {
        "name": "built",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "0",
            "icmp_type": "8"
        }
    },
    "destination": {
        "address": "172.1.1.2",
        "ip": "172.1.1.2",
        "port": 0
    },
    "network": {
        "direction": "inbound",
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "172.1.1.2"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "port": 14
    }
}

{
    "message": "%ASA-6-302021: Teardown ICMP connection for faddr 1.2.3.4/14 gaddr 172.1.1.1/0 laddr 172.1.1.2/0 type 8 code 0",
    "event": {
        "category": [
            "network"
        ],
        "code": "302021"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "0",
            "icmp_type": "8"
        }
    },
    "destination": {
        "address": "172.1.1.2",
        "ip": "172.1.1.2",
        "port": 0
    },
    "network": {
        "transport": "icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "172.1.1.2"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "port": 14
    }
}

{
    "message": "%ASA-6-305011: Built dynamic TCP translation from interco_pa_asa:10.79.16.23/35928 to dmz-gce:126.189.129.55/35928",
    "event": {
        "category": [
            "network"
        ],
        "code": "305011"
    },
    "action": {
        "name": "built",
        "target": "network-traffic"
    },
    "destination": {
        "address": "126.189.129.55",
        "ip": "126.189.129.55",
        "port": 35928
    },
    "network": {
        "transport": "tcp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.79.16.23",
            "126.189.129.55"
        ]
    },
    "source": {
        "address": "10.79.16.23",
        "ip": "10.79.16.23",
        "port": 35928
    }
}

{
    "message": "%ASA-6-305012: Teardown dynamic TCP translation from interco_asa:10.79.16.24/55924 to dmz:12.18.129.56/55924 duration 0:00:15",
    "event": {
        "category": [
            "network"
        ],
        "code": "305012"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "destination": {
        "address": "12.18.129.56",
        "ip": "12.18.129.56",
        "port": 55924
    },
    "network": {
        "transport": "tcp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.79.16.24",
            "12.18.129.56"
        ]
    },
    "source": {
        "address": "10.79.16.24",
        "ip": "10.79.16.24",
        "port": 55924
    }
}

{
    "message": "%ASA-4-313005: No matching connection for ICMP error message: icmp src outside:1.2.3.4(LOCAL\\a.smithee) dst inside:1.4.3.2 (type 3, code 3) on outside interface.  Original IP payload: udp src 1.4.3.2/53 dst 1.2.3.4/60717.",
    "event": {
        "category": [
            "network"
        ],
        "code": "313005",
        "reason": "icmp"
    },
    "action": {
        "name": "no matching connection",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "3",
            "icmp_type": "3"
        }
    },
    "destination": {
        "address": "1.4.3.2",
        "ip": "1.4.3.2"
    },
    "network": {
        "transport": "icmp"
    },
    "observer": {
        "egress": {
            "interface": {
                "alias": "inside"
            }
        },
        "ingress": {
            "interface": {
                "alias": "outside"
            }
        },
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "1.4.3.2"
        ],
        "user": [
            "a.smithee"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "LOCAL",
        "name": "a.smithee"
    }
}

{
    "message": "%ASA-3-313008: Denied IPv6-ICMP type=136, code=0 from fe80::f037:5fbc:b824:230d on interface NEA-FOR-WIFOR",
    "event": {
        "category": [
            "network"
        ],
        "code": "313008"
    },
    "action": {
        "name": "denied",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "icmp_code": "0",
            "icmp_type": "136"
        }
    },
    "network": {
        "transport": "ipv6-icmp"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "fe80::f037:5fbc:b824:230d"
        ]
    },
    "source": {
        "address": "fe80::f037:5fbc:b824:230d",
        "ip": "fe80::f037:5fbc:b824:230d"
    }
}

{
    "message": "%ASA-7-609002: Teardown local-host outside:1.2.3.4 duration 0:10:26",
    "event": {
        "category": [
            "network"
        ],
        "code": "609002"
    },
    "action": {
        "name": "teardown",
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "event": {
                "duration": "0:10:26"
            }
        }
    },
    "observer": {
        "ingress": {
            "interface": {
                "alias": "outside"
            }
        },
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    }
}

{
    "message": "%ASA-6-611101: User authentication succeeded: IP address: 0.0.0.0, Uname: admintufin",
    "event": {
        "category": [
            "authentication"
        ],
        "code": "611101",
        "outcome": "success",
        "type": [
            "info"
        ]
    },
    "action": {
        "name": "succeeded",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "0.0.0.0"
        ],
        "user": [
            "admintufin"
        ]
    },
    "source": {
        "address": "0.0.0.0",
        "ip": "0.0.0.0"
    },
    "user": {
        "name": "admintufin"
    }
}

{
    "message": "%ASA-5-611103: User logged out: Uname: admintufin",
    "event": {
        "category": [
            "authentication"
        ],
        "code": "611103",
        "outcome": "success",
        "type": [
            "end"
        ]
    },
    "action": {
        "name": "logged out",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "user": [
            "admintufin"
        ]
    },
    "user": {
        "name": "admintufin"
    }
}

{
    "message": "%ASA-6-716058: Group <CLIENT_VPN> User <Acme_account> IP <86.199.78.204> AnyConnect session lost connection. Waiting to resume.",
    "event": {
        "category": [
            "network"
        ],
        "code": "716058",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "anyconnect session lost connection",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "86.199.78.204"
        ],
        "user": [
            "Acme_account"
        ]
    },
    "source": {
        "address": "86.199.78.204",
        "ip": "86.199.78.204"
    },
    "user": {
        "domain": "CLIENT_VPN",
        "name": "Acme_account"
    }
}

{
    "message": "%ASA-6-716059: Group <CLIENT_VPN> User <User_Acme> IP <10.17.100.175> AnyConnect session resumed connection from IP <10.17.100.175>.",
    "event": {
        "category": [
            "network"
        ],
        "code": "716059",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "anyconnect session resumed",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.17.100.175"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "10.17.100.175",
        "ip": "10.17.100.175"
    },
    "user": {
        "domain": "CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-5-722011: Group <GroupPolicy_CLIENT_VPN> User <User_acme> IP <91.172.139.4> SVC Message: 17/WARNING: Reconnecting the VPN tunnel..",
    "event": {
        "category": [
            "network"
        ],
        "code": "722011",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "reconnecting the vpn tunnel..",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "91.172.139.4"
        ],
        "user": [
            "User_acme"
        ]
    },
    "source": {
        "address": "91.172.139.4",
        "ip": "91.172.139.4"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_acme"
    }
}

{
    "message": "%ASA-5-722012: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <86.217.237.163> SVC Message: 16/NOTICE: Client PC is going into suspend mode (Sleep, Hibernate, etc)..",
    "event": {
        "category": [
            "network"
        ],
        "code": "722012",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "client pc is going into suspend mode (sleep, hibernate, etc)..",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "86.217.237.163"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "86.217.237.163",
        "ip": "86.217.237.163"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-6-722023: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <86.215.190.93> TCP SVC connection terminated without compression",
    "event": {
        "category": [
            "network"
        ],
        "code": "722023",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "svc connection terminated",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "86.215.190.93"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "86.215.190.93",
        "ip": "86.215.190.93"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-6-722023: Group <GroupPolicy-CLIENT-VPN> User <a.smithee> IP <1.2.3.4> UDP SVC connection terminated without compression",
    "event": {
        "category": [
            "network"
        ],
        "code": "722023",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "svc connection terminated",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "a.smithee"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "GroupPolicy-CLIENT-VPN",
        "name": "a.smithee"
    }
}

{
    "message": "%ASA-5-722028: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <91.172.139.4> Stale SVC connection closed.",
    "event": {
        "category": [
            "network"
        ],
        "code": "722028",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "connection closed.",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "91.172.139.4"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "91.172.139.4",
        "ip": "91.172.139.4"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-5-722032: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <93.23.18.76> New UDP SVC connection replacing old connection.",
    "event": {
        "category": [
            "network"
        ],
        "code": "722032",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "connection replacing old connection.",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "93.23.18.76"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "93.23.18.76",
        "ip": "93.23.18.76"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-5-722033: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <77.205.143.138> First TCP SVC connection established for SVC session.",
    "event": {
        "category": [
            "network"
        ],
        "code": "722033",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "connection established for svc session.",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "77.205.143.138"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "77.205.143.138",
        "ip": "77.205.143.138"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-5-722034: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <109.17.100.175> New TCP SVC connection, no existing connection.",
    "event": {
        "category": [
            "network"
        ],
        "code": "722034",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "connection, no existing connection.",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "109.17.100.175"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "109.17.100.175",
        "ip": "109.17.100.175"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-4-722037: Group <GroupPolicy_CLIENT_VPN> User <User_Acme> IP <92.131.212.102> SVC closing connection: Transport closing.",
    "event": {
        "category": [
            "network"
        ],
        "code": "722037",
        "reason": "Transport closing",
        "type": [
            "connection"
        ]
    },
    "action": {
        "name": "closing connection",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "92.131.212.102"
        ],
        "user": [
            "User_Acme"
        ]
    },
    "source": {
        "address": "92.131.212.102",
        "ip": "92.131.212.102"
    },
    "user": {
        "domain": "GroupPolicy_CLIENT_VPN",
        "name": "User_Acme"
    }
}

{
    "message": "%ASA-6-725001: Starting SSL handshake with client WAN:195.101.173.60/49238 for TLS session.",
    "event": {
        "category": [
            "network"
        ],
        "code": "725001"
    },
    "action": {
        "name": "starting ssl handshake",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "195.101.173.60"
        ]
    },
    "source": {
        "address": "195.101.173.60",
        "ip": "195.101.173.60",
        "port": 49238
    }
}

{
    "message": "%ASA-6-725002: Device completed SSL handshake with client WAN:90.114.208.186/65531",
    "event": {
        "category": [
            "network"
        ],
        "code": "725002"
    },
    "action": {
        "name": "device completed ssl handshake",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "90.114.208.186"
        ]
    },
    "source": {
        "address": "90.114.208.186",
        "ip": "90.114.208.186",
        "port": 65531
    }
}

{
    "message": "%ASA-6-725006: Device failed SSL handshake with client WAN:195.101.173.60/49699",
    "event": {
        "category": [
            "network"
        ],
        "code": "725006"
    },
    "action": {
        "name": "device failed ssl handshake",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "195.101.173.60"
        ]
    },
    "source": {
        "address": "195.101.173.60",
        "ip": "195.101.173.60",
        "port": 49699
    }
}

{
    "message": "<166>Nov 09 2022 10:01:59: %ASA-6-725007: SSL session with client WAN:195.101.173.60/49486 terminated.",
    "event": {
        "category": [
            "network"
        ],
        "code": "725007",
        "reason": "terminated"
    },
    "action": {
        "name": "ssl session",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "195.101.173.60"
        ]
    },
    "source": {
        "address": "195.101.173.60",
        "ip": "195.101.173.60",
        "port": 49486
    }
}

{
    "message": "%ASA-4-733100: [scanning] drop rate-1 exceeded. Current burst rate is 8 per second, max configured rate is 10; Current average rate is 23 per second, max configured rate is 5; Cumulative total count is 14188",
    "event": {
        "category": [
            "network"
        ],
        "code": "733100"
    },
    "action": {
        "name": "scanning",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    }
}

{
    "message": "%ASA-6-737016: IPAA: Freeing local pool address 192.168.122.247",
    "event": {
        "category": [
            "network"
        ],
        "code": "737016"
    },
    "action": {
        "name": "freeing local pool address",
        "target": "network-traffic"
    },
    "observer": {
        "product": "Adaptive Security Appliance",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "192.168.122.247"
        ]
    },
    "source": {
        "address": "192.168.122.247",
        "ip": "192.168.122.247"
    }
}

{
    "message": "%FTD-6-852001: Received Lightweight to full proxy event from application Snort for TCP flow 1.2.3.4/10000 to 4.3.2.1/47003",
    "event": {
        "category": [
            "network"
        ],
        "code": "852001"
    },
    "action": {
        "target": "network-traffic"
    },
    "destination": {
        "address": "4.3.2.1",
        "ip": "4.3.2.1",
        "port": 47003
    },
    "network": {
        "application": "Snort",
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "4.3.2.1"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "port": 10000
    }
}

{
    "message": "%FTD-6-113004: AAA user authentication Successful : server =  10.10.48.61 : user = jdoe",
    "event": {
        "category": [
            "authentication"
        ],
        "code": "113004",
        "outcome": "success",
        "type": [
            "start"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "destination": {
        "address": "10.10.48.61",
        "ip": "10.10.48.61"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.10.48.61"
        ],
        "user": [
            "jdoe"
        ]
    },
    "user": {
        "name": "jdoe"
    }
}

{
    "message": "%FTD-1-430002: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 3, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 62230, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 63853, DstPort: 443, Protocol: tcp, IngressInterface: WAN, EgressInterface: DMZ, IngressZone: OUT, EgressZone: DMZ, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: IN_KEMP_MAIL, Prefilter Policy: EXAMPLE L3-L4 Policy, InitiatorPackets: 2, ResponderPackets: 1, InitiatorBytes: 128, ResponderBytes: 66, NAPPolicy: Balanced Security and Connectivity",
    "event": {
        "action": "connection-started",
        "category": [
            "network"
        ],
        "code": "430002",
        "type": [
            "connection",
            "start"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "Allow"
        },
        "device_id": "1662dc94-665c-4e50-97df-1c5b281556aa"
    },
    "destination": {
        "address": "5.6.7.8",
        "bytes": 66,
        "ip": "5.6.7.8",
        "packets": 1,
        "port": 443
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "5.6.7.8"
        ]
    },
    "rule": {
        "name": "IN_KEMP_MAIL",
        "ruleset": "ACPolicy"
    },
    "source": {
        "address": "1.2.3.4",
        "bytes": 128,
        "ip": "1.2.3.4",
        "packets": 2,
        "port": 63853
    }
}

{
    "message": "%FTD-1-430003: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 5, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 35868, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 56901, DstPort: 53, Protocol: udp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_SRVAD_DNS_OUT, Prefilter Policy: EXAMPLE L3-L4 Policy, User: Not Found, Client: DNS client, ApplicationProtocol: DNS, ConnectionDuration: 0, InitiatorPackets: 1, ResponderPackets: 1, InitiatorBytes: 88, ResponderBytes: 152, NAPPolicy: Balanced Security and Connectivity, DNSQuery: 1.fr.pool.ntp.org, DNSRecordType: a host address, DNSResponseType: No Error, DNS_TTL: 150, NAT_InitiatorPort: 22294, NAT_ResponderPort: 53, NAT_InitiatorIP: 4.3.2.1, NAT_ResponderIP: 8.7.6.5",
    "event": {
        "action": "connection-finished",
        "category": [
            "network"
        ],
        "code": "430003",
        "type": [
            "connection",
            "end"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "Allow"
        },
        "device_id": "1662dc94-665c-4e50-97df-1c5b281556aa",
        "dns": {
            "record_type": "a host address",
            "ttl": "150"
        }
    },
    "destination": {
        "address": "5.6.7.8",
        "bytes": 152,
        "ip": "5.6.7.8",
        "packets": 1,
        "port": 53
    },
    "dns": {
        "question": {
            "name": "1.fr.pool.ntp.org",
            "registered_domain": "ntp.org",
            "subdomain": "1.fr.pool",
            "top_level_domain": "org"
        },
        "response_code": "No Error"
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "application": "dns client",
        "protocol": "DNS",
        "transport": "udp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "hosts": [
            "1.fr.pool.ntp.org"
        ],
        "ip": [
            "1.2.3.4",
            "5.6.7.8"
        ],
        "user": [
            "Not Found"
        ]
    },
    "rule": {
        "name": "SORTIE_SRVAD_DNS_OUT",
        "ruleset": "ACPolicy"
    },
    "source": {
        "address": "1.2.3.4",
        "bytes": 88,
        "ip": "1.2.3.4",
        "packets": 1,
        "port": 56901
    },
    "user": {
        "name": "Not Found"
    }
}

{
    "message": "%FTD-1-430003: EventPriority: Low, DeviceUUID: 1662dc94-665c-4e50-97df-1c5b281556aa, InstanceID: 5, FirstPacketSecond: 2023-07-27T08:13:09Z, ConnectionID: 35871, AccessControlRuleAction: Allow, SrcIP: 1.2.3.4, DstIP: 5.6.7.8, SrcPort: 50158, DstPort: 443, Protocol: tcp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_INTERNET_ALL, Prefilter Policy: EXAMPLE L3-L4 Policy, User: Not Found, Client: SSL client, ApplicationProtocol: HTTPS, WebApplication: Trend Micro, ConnectionDuration: 0, InitiatorPackets: 10, ResponderPackets: 13, InitiatorBytes: 967, ResponderBytes: 5018, NAPPolicy: Balanced Security and Connectivity, SSLPolicy: None, SSLFlowStatus: Success, SSLCipherSuite: Unknown, SSLCertificate: 3ccc5ece59e81d905ed314c1e9af0f797393fec5, SSLVersion: Unknown, SSLServerCertStatus: Valid, SSLActualAction: Do Not Decrypt, SSLExpectedAction: Do Not Decrypt, SSLServerName: example.org, URLCategory: Computer Security, URLReputation: Trusted, URL: https://example.org, NAT_InitiatorPort: 36170, NAT_ResponderPort: 443, NAT_InitiatorIP: 4.3.2.1, NAT_ResponderIP: 8.7.6.5",
    "event": {
        "action": "connection-finished",
        "category": [
            "network"
        ],
        "code": "430003",
        "type": [
            "connection",
            "end"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "Allow"
        },
        "device_id": "1662dc94-665c-4e50-97df-1c5b281556aa",
        "url_category": "Computer Security",
        "web_application": "Trend Micro"
    },
    "destination": {
        "address": "5.6.7.8",
        "bytes": 5018,
        "ip": "5.6.7.8",
        "packets": 13,
        "port": 443
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "application": "ssl client",
        "protocol": "HTTPS",
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "5.6.7.8"
        ],
        "user": [
            "Not Found"
        ]
    },
    "rule": {
        "name": "SORTIE_INTERNET_ALL",
        "ruleset": "ACPolicy"
    },
    "source": {
        "address": "1.2.3.4",
        "bytes": 967,
        "ip": "1.2.3.4",
        "packets": 10,
        "port": 50158
    },
    "url": {
        "domain": "example.org",
        "original": "https://example.org",
        "port": 443,
        "registered_domain": "example.org",
        "scheme": "https",
        "top_level_domain": "org"
    },
    "user": {
        "name": "Not Found"
    }
}

{
    "message": "%FTD-1-430003: EventPriority: Low, DeviceUUID: deyyyyy-844d-11e7-b104-8d1450667052, InstanceID: 1, FirstPacketSecond: 2023-08-23T12:59:00Z, ConnectionID: 55087, AccessControlRuleAction: Allow, SrcIP: 10.55.21.168, DstIP: 142.55.179.67, SrcPort: 77777, DstPort: 80, Protocol: tcp, IngressInterface: LAN, EgressInterface: WAN, IngressZone: LAN, EgressZone: OUT, IngressVRF: Global, EgressVRF: Global, ACPolicy: ACPolicy, AccessControlRuleName: SORTIE_INTERNET_ALL, Prefilter Policy: LALALAND L3-L4 Policy, User: Not Found, UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.32 Safari/537.36, Client: Chrome, ClientVersion: 60.0.3112.32, ApplicationProtocol: HTTP, WebApplication: Google, ConnectionDuration: 0, InitiatorPackets: 5, ResponderPackets: 5, InitiatorBytes: 565, ResponderBytes: 484, NAPPolicy: Balanced Security and Connectivity, ReferencedHost: connectivitycheck.gstatic.com, URLCategory: Infrastructure and Content Delivery Networks, URLReputation: Favorable, URL: http://connectivitycheck.gstatic.com/generate_204, NAT_InitiatorPort: 77777, NAT_ResponderPort: 80, NAT_InitiatorIP: 194.55.57.195, NAT_ResponderIP: 142.55.179.67",
    "event": {
        "action": "connection-finished",
        "category": [
            "network"
        ],
        "code": "430003",
        "type": [
            "connection",
            "end"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ac": {
            "rule_action": "Allow"
        },
        "device_id": "deyyyyy-844d-11e7-b104-8d1450667052",
        "url_category": "Infrastructure and Content Delivery Networks",
        "web_application": "Google"
    },
    "destination": {
        "address": "142.55.179.67",
        "bytes": 484,
        "ip": "142.55.179.67",
        "packets": 5,
        "port": 80
    },
    "log": {
        "level": "Low"
    },
    "network": {
        "protocol": "HTTP",
        "transport": "tcp"
    },
    "observer": {
        "product": "Firepower Threat Defense",
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "10.55.21.168",
            "142.55.179.67"
        ],
        "user": [
            "Not Found"
        ]
    },
    "rule": {
        "name": "SORTIE_INTERNET_ALL",
        "ruleset": "ACPolicy"
    },
    "source": {
        "address": "10.55.21.168",
        "bytes": 565,
        "ip": "10.55.21.168",
        "packets": 5,
        "port": 77777
    },
    "url": {
        "domain": "connectivitycheck.gstatic.com",
        "original": "http://connectivitycheck.gstatic.com/generate_204",
        "path": "/generate_204",
        "port": 80,
        "registered_domain": "gstatic.com",
        "scheme": "http",
        "subdomain": "connectivitycheck",
        "top_level_domain": "com"
    },
    "user": {
        "name": "Not Found"
    },
    "user_agent": {
        "device": {
            "name": "Other"
        },
        "name": "Other",
        "original": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML",
        "os": {
            "name": "Linux"
        }
    }
}

{
    "message": "Group <AnyConnect-SESAME> User <JD34242243> IP <1.2.3.4> AnyConnect session lost connection. Waiting to resume.",
    "event": {
        "category": [
            "network"
        ],
        "reason": "AnyConnect session lost connection. Waiting to resume."
    },
    "action": {
        "name": "anyconnect session lost connection",
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "JD34242243"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "AnyConnect-SESAME",
        "name": "JD34242243"
    }
}

{
    "message": "Task ran for 100 msec, Process = aaa_shim_thread, PC = abb111cc, Call stack =   0x000000aaab89d6a0  0x000000aaab88cdec  0x000000aaab88cd68",
    "event": {
        "category": [
            "network"
        ],
        "reason": "Task ran for 100 msec"
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "event": {
                "duration": "100"
            }
        },
        "process": {
            "call_stack": "0x000000aaab89d6a0  0x000000aaab88cdec  0x000000aaab88cd68",
            "instruction_pointer": "abb111cc"
        }
    },
    "observer": {
        "vendor": "Cisco"
    },
    "process": {
        "name": "aaa_shim_thread"
    }
}

{
    "message": "Group <MyGroup> User <MyUser> IP <4.3.2.1> IPv4 Address <1.2.3.4> IPv6 address <::> assigned to session",
    "event": {
        "category": [
            "network"
        ],
        "reason": "IPv4 Address <1.2.3.4> IPv6 address <::> assigned to session"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4",
            "4.3.2.1"
        ],
        "user": [
            "MyUser"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4",
        "nat": {
            "ip": "4.3.2.1"
        }
    },
    "user": {
        "domain": "MyGroup",
        "name": "MyUser"
    }
}

{
    "message": "Group <MyGroup> User <MyUser> IP <4.3.2.1> IPv4 Address <> IPv6 address <3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6> assigned to session",
    "event": {
        "category": [
            "network"
        ],
        "reason": "IPv4 Address <> IPv6 address <3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6> assigned to session"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6",
            "4.3.2.1"
        ],
        "user": [
            "MyUser"
        ]
    },
    "source": {
        "address": "3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6",
        "ip": "3deb:3c5e:59d0:53ad:1115:d3d7:58da:47d6",
        "nat": {
            "ip": "4.3.2.1"
        }
    },
    "user": {
        "domain": "MyGroup",
        "name": "MyUser"
    }
}

{
    "message": "Group <MYGROUP> User <JD34242243> IP <1.2.3.4> SVC closing connection: DPD failure.",
    "event": {
        "category": [
            "network"
        ],
        "reason": "DPD failure"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "JD34242243"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "MYGROUP",
        "name": "JD34242243"
    }
}

{
    "message": "Group <MyGroup> User <MyUsser> IP <1.2.3.4> Client Type: Cisco AnyConnect VPN Agent for Windows 4.10.07061",
    "event": {
        "category": [
            "network"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "client_type": "Cisco AnyConnect VPN Agent for Windows 4.10.07061"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "MyUsser"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "MyGroup",
        "name": "MyUsser"
    }
}

{
    "message": " Group <MyGroup> User <MyUsser> IP <1.2.3.4> Client Type: Cisco AnyConnect VPN Agent for Windows 4.10.07061",
    "event": {
        "category": [
            "network"
        ]
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "client_type": "Cisco AnyConnect VPN Agent for Windows 4.10.07061"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "MyUsser"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "MyGroup",
        "name": "MyUsser"
    }
}

{
    "message": "Group = MYGROUP, Username = JD34242243, IP = 1.2.3.4, Session disconnected. Session Type: SSL, Duration: 6h:33m:18s, Bytes xmt: 220870890, Bytes rcv: 57125392, Reason: Idle Timeout",
    "event": {
        "category": [
            "network"
        ],
        "reason": "Idle Timeout"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "JD34242243"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "MYGROUP",
        "name": "JD34242243"
    }
}

{
    "message": "Task ran for 109 msec, Process = aaa_shim_thread, PC = ade9333c, Call stack =   0x000000aaabb34820  0x000000aaabb2429c  0x000000aaabb24218",
    "event": {
        "category": [
            "network"
        ],
        "reason": "Task ran for 109 msec"
    },
    "action": {
        "target": "network-traffic"
    },
    "cisco": {
        "ftd": {
            "event": {
                "duration": "109"
            }
        },
        "process": {
            "call_stack": "0x000000aaabb34820  0x000000aaabb2429c  0x000000aaabb24218",
            "instruction_pointer": "ade9333c"
        }
    },
    "observer": {
        "vendor": "Cisco"
    },
    "process": {
        "name": "aaa_shim_thread"
    }
}

{
    "message": "TunnelGroup <AnyConnect-SESAME> GroupPolicy <MYGROUP> User <JD34242243> IP <1.2.3.4> No IPv6 address available for SVC connection",
    "event": {
        "category": [
            "network"
        ],
        "reason": "No IPv6 address available for SVC connection"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "JD34242243"
        ]
    },
    "rule": {
        "name": "MYGROUP"
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "AnyConnect-SESAME",
        "name": "JD34242243"
    }
}

{
    "message": "Group <AnyConnect-EXAMPLE> User <MyUser> IP <1.2.3.4> AnyConnect session lost connection. Waiting to resume.",
    "event": {
        "category": [
            "network"
        ],
        "reason": "AnyConnect session lost connection. Waiting to resume."
    },
    "action": {
        "name": "anyconnect session lost connection",
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "1.2.3.4"
        ],
        "user": [
            "MyUser"
        ]
    },
    "source": {
        "address": "1.2.3.4",
        "ip": "1.2.3.4"
    },
    "user": {
        "domain": "AnyConnect-EXAMPLE",
        "name": "MyUser"
    }
}

{
    "message": "TunnelGroup <AnyConnect-EX> GroupPolicy <MyGroup> User <MyUser> IP <4.3.2.1> No IPv6 address available for SVC connection",
    "event": {
        "category": [
            "network"
        ],
        "reason": "No IPv6 address available for SVC connection"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "ip": [
            "4.3.2.1"
        ],
        "user": [
            "MyUser"
        ]
    },
    "rule": {
        "name": "MyGroup"
    },
    "source": {
        "address": "4.3.2.1",
        "ip": "4.3.2.1"
    },
    "user": {
        "domain": "AnyConnect-EX",
        "name": "MyUser"
    }
}

{
    "message": "Tunnel group search using certificate maps failed for peer certificate: serial number: 111111111111111111111111, subject name: UID=U11111111,CN=JOHN DOE,OU=Unit,O=URAAA,C=US, issuer_name: CN=Admin,OU=Unit,O=Example,C=US.",
    "event": {
        "category": [
            "network"
        ],
        "reason": "Tunnel group search using certificate maps failed for peer certificate"
    },
    "action": {
        "target": "network-traffic"
    },
    "observer": {
        "vendor": "Cisco"
    },
    "related": {
        "user": [
            "JOHN DOE"
        ]
    },
    "tls": {
        "client": {
            "x509": {
                "issuer": {
                    "distinguished_name": "CN=Admin,OU=Unit,O=Example,C=US"
                },
                "serial_number": "111111111111111111111111",
                "subject": {
                    "distinguished_name": "UID=U11111111,CN=JOHN DOE,OU=Unit,O=URAAA,C=US"
                }
            }
        }
    },
    "user": {
        "name": "JOHN DOE"
    }
}

Extracted Fields

The following table lists the fields that are extracted, normalized under the ECS format, analyzed and indexed by the parser. It should be noted that infered fields are not listed.

Name Type Description
@timestamp date Date/time when the event originated.
action.target keyword The target of the action. This field is mandatory for STIX2 compliance
cisco.ac.rule_action keyword Access controle rule action
cisco.client_type keyword Client type
cisco.device_id keyword Device ID
cisco.dns.record_type keyword Cisco record type returned for the DNS query
cisco.dns.ttl keyword Cisco ttl returned for the DNS query
cisco.ftd.event.duration keyword Cisco FTD event duration
cisco.ftd.file_sandbox_status keyword The descriptive name for the filelog sandbox status.
cisco.ftd.file_storage_status keyword The storage status of the file associated with the event
cisco.ftd.icmp_code keyword The ICMP code used by the session responder.
cisco.ftd.icmp_type keyword The ICMP type used by the session initiator.
cisco.ftd.sha_disposition keyword Sha disposition
cisco.ftd.spero_disposition keyword The descriptive name for the filelog spero status.
cisco.process.call_stack keyword Stack trace of the CPU hogging process
cisco.process.instruction_pointer keyword Instruction pointer of the CPU hogging process
cisco.url_category keyword URL category
cisco.web_application keyword Web application
destination.bytes long Bytes sent from the destination to the source.
destination.domain keyword The domain name of the destination.
destination.ip ip IP address of the destination.
destination.nat.ip ip Destination NAT ip
destination.nat.port long Destination NAT Port
destination.packets long Packets sent from the destination to the source.
destination.port long Port of the destination.
dns.question.name keyword The name being queried.
dns.response_code keyword The DNS response code.
event.action keyword The action captured by the event.
event.category keyword Event category. The second categorization field in the hierarchy.
event.code keyword Identification code for this event.
event.kind keyword The kind of the event. The highest categorization field in the hierarchy.
event.outcome keyword The outcome of the event. The lowest level categorization field in the hierarchy.
event.reason keyword Reason why this event happened, according to the source
event.type keyword Event type. The third categorization field in the hierarchy.
file.extension keyword File extension, excluding the leading dot.
file.hash.sha256 keyword SHA256 hash.
file.name keyword Name of the file including the extension, without the directory.
file.size long File size in bytes.
host.hostname keyword Hostname of the host.
host.ip ip Host ip addresses.
host.name keyword Name of the host.
http.request.bytes long Total size in bytes of the request (body and headers).
http.request.method keyword HTTP request method.
http.request.mime_type keyword Mime type of the body of the request.
http.response.bytes long Total size in bytes of the response (body and headers).
http.response.status_code long HTTP response status code.
log.level keyword Log level of the log event.
network.application keyword Application level protocol name.
network.bytes long Total bytes transferred in both directions.
network.direction keyword Direction of the network traffic.
network.protocol keyword Application protocol name.
network.transport keyword Protocol Name corresponding to the field iana_number.
observer.egress.interface.alias keyword Interface alias
observer.hostname keyword Hostname of the observer.
observer.ingress.interface.alias keyword Interface alias
observer.vendor keyword Vendor name of the observer.
process.name keyword Process name.
process.pid long Process id.
rule.category keyword Rule category
rule.name keyword Rule name
rule.ruleset keyword Rule ruleset
source.bytes long Bytes sent from the source to the destination.
source.ip ip IP address of the source.
source.nat.ip ip Source NAT ip
source.nat.port long Source NAT port
source.packets long Packets sent from the source to the destination.
source.port long Port of the source.
threat.software.name keyword Name of the software.
tls.client.x509.issuer.distinguished_name keyword Distinguished name (DN) of issuing certificate authority.
tls.client.x509.serial_number keyword Unique serial number issued by the certificate authority.
tls.client.x509.subject.distinguished_name keyword Distinguished name (DN) of the certificate subject entity.
url.original wildcard Unmodified original url as seen in the event source.
url.path wildcard Path of the request, such as "/search".
url.scheme keyword Scheme of the url.
user.domain keyword Name of the directory the user is a member of.
user.name keyword Short name or login of the user.
user_agent.original keyword Unparsed user_agent string.

For more information on the Intake Format, please find the code of the Parser, Smart Descriptions, and Supported Events here.

Further readings