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Umbrella DNS Logs

Overview

Cisco Umbrella offers flexible, cloud-delivered security. It combines multiple security functions into one solution, so that protection can be extended to devices, remote users, and distributed locations anywhere.

  • Vendor: Cisco
  • Supported environment: SaaS
  • Detection based on: Telemetry
  • Supported application or feature: DNS records, Network device logs

Configure

This section will guide you to configure the forwarding of Cisco Umbrella logs to Sekoia.io by means of AWS S3 buckets.

Prerequisites

  • Administrator access to the Cisco Umbrella console
  • Access to Sekoia.io Intakes and Playbook pages with write permissions
  • Administrator access to the Amazon console with permissions to create and manage S3 buckets, SQS queues, and IAM identities

AWS Authentication Setup

Sekoia.io supports two authentication methods to access your AWS resources. Choose the one that best fits your security requirements:

Method Summary When to use
IAM Role with OIDC (Recommended) Sekoia.io assumes an IAM Role using short-lived credentials issued via OpenID Connect (OIDC). No long-lived access keys are stored. Preferred for new setups and security-conscious environments
Static Access Keys A dedicated IAM user authenticates with a static access key and secret. Existing setups or environments where OIDC federation is not available

This method uses OpenID Connect (OIDC) federation so that Sekoia.io can assume an AWS IAM Role and obtain short-lived credentials automatically. No long-lived access keys are stored in Sekoia.io.

Step 1 — Register Sekoia.io as an OIDC Identity Provider in AWS IAM

  1. Open the IAM console and navigate to Identity providers.
  2. Click Add provider and select OpenID Connect.
  3. Fill in the form:
    • Provider URL: https://app.sekoia.io/api/v1/symphony/oidc
    • Audience: sts.amazonaws.com
  4. Click Add provider to confirm.

Once created, note the Provider ARN (e.g. arn:aws:iam::XXXXXXXXXXXX:oidc-provider/app.sekoia.io/api/v1/symphony/oidc). You will need it in the steps below.

Step 2 — Create an IAM Role for Sekoia.io

  1. In the IAM console, navigate to Roles and click Create role.
  2. Select Web identity as the trusted entity type.
  3. Choose the app.sekoia.io/api/v1/symphony/oidc identity provider you just registered and set the audience to sts.amazonaws.com.

  4. Proceed to the Trust policy and replace its content with the following, substituting your AWS account ID, community UUID, and module configuration UUID:

    {
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": {
                "Federated": "arn:aws:iam::XXXXXXXXXXXX:oidc-provider/app.sekoia.io/api/v1/symphony/oidc"
            },
            "Action": "sts:AssumeRoleWithWebIdentity",
            "Condition": {
                "StringEquals": {
                    "app.sekoia.io/api/v1/symphony/oidc:aud": "sts.amazonaws.com"
                },
                "StringLike": {
                    "app.sekoia.io/api/v1/symphony/oidc:sub": "community:<COMMUNITY_UUID>:modconf:<MODULE_CONFIGURATION_UUID>"
                }
            }
        }
    ]
}

Step 3 — Attach a permission policy to the role

Attach an inline or managed policy granting the role read access to the SQS queue and S3 bucket:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:GetObject",
                "s3:ListBucket"
            ],
            "Resource": "arn:aws:s3:::NAME_HERE"
        },
        {
            "Effect": "Allow",
            "Action": [
                "sqs:GetQueueUrl",
                "sqs:ReceiveMessage",
                "sqs:DeleteMessage",
                "sqs:GetQueueAttributes"
            ],
            "Resource": "arn:aws:sqs:REGION_HERE:XXXXXXXXXXXX:NAME_HERE"
        }
    ]
}

Step 4 — Copy the Role ARN

After creating the role, note its ARN (e.g. arn:aws:iam::XXXXXXXXXXXX:role/ROLE_NAME). You will need it when configuring the connector in Sekoia.io.

Step 5 — Configure the Sekoia.io AWS module

In the Sekoia.io connector configuration, set the following fields:

  • AWS Region (aws_region_name): the AWS region where your resources are deployed (e.g. eu-west-1)
  • AWS Role ARN (aws_role_arn): the ARN of the role you created above

Leave the Access Key and Secret Access Key fields empty — they are not used with this method.

This method authenticates using a dedicated IAM user with a static access key and secret access key stored in Sekoia.io.

Step 1 — Create a dedicated IAM user

Create a dedicated IAM user in the IAM console and generate programmatic access credentials (access key ID and secret access key) for that user.

Step 2 — Attach a resource-based policy to your SQS queue and S3 bucket

Ensure that the IAM user has the following permissions on your SQS queue and S3 bucket:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "sqs:ReceiveMessage", "sqs:DeleteMessage", "sqs:GetQueueUrl"
            ],
            "Principal": {
                "AWS": "arn:aws:iam::XXXXXXXXXXXX:user/USERNAME_HERE"
            },
            "Resource": "arn:aws:sqs:REGION_HERE:XXXXXXXXXXXX:NAME_HERE"
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:GetObject"
            ],
            "Principal": {
                "AWS": "arn:aws:iam::XXXXXXXXXXXX:user/USERNAME_HERE"
            },
            "Resource": "arn:aws:s3:::NAME_HERE/*"
        }
    ]
}

Step 3 — Configure the Sekoia.io AWS module

In the Sekoia.io connector configuration, set the following fields:

  • AWS Region (aws_region_name): the AWS region where your resources are deployed (e.g. eu-west-1)
  • Access Key (aws_access_key): the access key ID of your IAM user
  • Secret Access Key (aws_secret_access_key): the secret access key of your IAM user

Leave the AWS Role ARN field empty — it is not used with this method.

Create an AWS S3 Bucket

To create a new AWS S3 Bucket, please refer to this guide.

  1. On the AWS S3, go to Buckets and select our bucket.
  2. Select Permissions tab and go to Bucket Policy section
  3. Click Edit and paste the JSON Bucket policy from Cisco Umbrella
  4. In the Policy, replace the bucketname placeholde by the name of our bucket.
  5. Click Save changes.

Important

Keep in mind to conserve the /* when defining in the policy.

Configure Cisco Umbrella

  1. Log on the Cisco Umbrella console
  2. Go to Admin > Log Management
  3. In the Amazon S3 section, select Use your company-managed Amazon S3 bucket

  4. In Amazon S3 bucket, type the name of your bucket and click Verify.

  5. On your AWS console, go in your bucket.

  6. In the Objects tab, click on README_FROM_UMBRELLA.txt then click on Open
  7. Copy the token from the readme
  8. On the Cisco Umbrella console, in the field Token Number, paste the token and click Save

Note

After clicking Verify, the message Great! We successfully verified your Amazon S3 bucket must be displayed

Note

After clicking Save, the message We’re sending data to your S3 storage must be displayed

Important

According to the type of the logs, the objects will be prefixed with dnslogs/ for DNS logs, proxylogs for proxy logs, iplogs for ip logs, ...

Create a SQS queue

The collect will rely on S3 Event Notifications (SQS) to get new S3 objects.

  1. Create a queue in the SQS service by following this guide
  2. In the Access Policy step, choose the advanced configuration and adapt this configuration sample with your own SQS Amazon Resource Name (ARN) (the main change is the Service directive allowing S3 bucket access): 
    {
  "Version": "2008-10-17",
  "Id": "__default_policy_ID",
  "Statement": [
    {
      "Sid": "__owner_statement",
      "Effect": "Allow",
      "Principal": {
    "Service": "s3.amazonaws.com"
      },
      "Action": "SQS:SendMessage",
      "Resource": "arn:aws:sqs:XXX:XXX"
    }
  ]
}

Important

Keep in mind that you have to create the SQS queue in the same region as the S3 bucket you want to watch.

Create a S3 Event notification

Use the following guide to create S3 Event Notification. Once created:

  1. In the General configuration, type dnslogs/ as the Prefix
  2. Select the notification for object creation in the Event type section
  3. As the destination, choose the SQS service
  4. Select the queue you created in the previous section

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.

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 Your Playbook

This section will assist you in pulling remote logs from Sekoia and sending them to the intake you previously created.

  1. Go to the Sekoia playbook page.
  2. Click on the + New playbook button at the top right of the page.
  3. Select Create a playbook from scratch, and click Next.
  4. Give it a Name and a Description, and click Next.
  5. Choose a trigger from the list by searching for the name of the product, and click Create.
  6. A new Playbook page will be displayed. Click on the module in the center of the page, then click on the Configure icon.
  7. On the right panel, click on the Configuration tab.
  8. Select an existing Trigger Configuration (from the account menu) or create a new one by clicking on + Create new configuration.
  9. Configure the Trigger based on the Actions Library (for instance, see here for AWS modules), then click Save.
  10. Click on Save at the top right of the playbook page.
  11. Activate the playbook by clicking on the "On / Off" toggle button at the top right corner of the page.

Info

Refer to the AWS Authentication Setup section above for instructions on configuring either OIDC (recommended) or static access keys.

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.

 "2021-02-21 15:30:49","CORP - IP INTERNET","CORP - IP INTERNET","1.1.1.1","1.1.1.1","Blocked","1 (A)","NOERROR","something.net","DNS Tunneling VPN","Networks","Networks","DNS Tunneling VPN"

 "2020-06-12 14:29:47","client","client,FRBCORP","1.1.1.1","2.2.2.2","Allowed","1 (A)","NOERROR","client group","Software/Technology,Business Services,Infrastructure,SaaS and B2B,Science and Technology,Application","AD Users","AD Users,Roaming Computers",""

 "2020-06-12 14:29:48","ERT - IP INTERNET","ERT - IP INTERNET","1.1.1.1","1.1.1.1","Allowed","Other","NXDOMAIN","_ldap._tcp.dc._msdcs.subdomain.corp.intra.","","Networks","Networks",""

"2024-03-04 11:17:25","Firstname LASTNAME (firstname.lastname@corp.com)","Firstname LASTNAME 
(firstname.lastname@corp.com),FR01-MDBBC-L029.hdb.int,CORP_RANGE_01,CORP","10.1.1.1","80.1.1.1","Allowed","1 (A)","NXDOMAIN","10.1.1.1_1.","","AD Users","AD Users,AD 
Computers,Internal Networks,Sites",""

 "2024-01-15 17:29:16","CORP - IP INTERNET","CORP - IP INTERNET","1.1.1.1","1.1.1.1","Allowed","1 (A)","NOERROR","emea.corp.","","Networks","Networks",""

 "2024-03-12 09:09:48","CD111","CD111","1.1.1.1","1.1.1.1","Allowed","1 (A)","NOERROR","substrate.office.com.","Software/Technology,Webmail,Business Services,Allow List,Organizational Email,Application,Web-based Email,Computers and Internet","Anyconnect Roaming Client","Anyconnect Roaming Client","Allow List"

"2024-09-11 18:46:00","Active Directory User ([adusername@example.net](mailto:adusername@example.net))","Active Directory User ([adusername@example.net](mailto:adusername@example.net)),WIN11-SNG01-Example","10.10.1.100","24.123.132.133","Allowed","1 (A)","NOERROR","domain-visited.com.","Software/Technology,Business Services,Allow List,Infrastructure and Content Delivery Networks,SaaS and B2B,Application","AD Users","AD Users,Anyconnect Roaming Client","","506165","","8234970"

"2024-09-11 18:46:00","Active Directory User ([adusername@example.net](mailto:adusername@example.net))","Active Directory User ([adusername@example.net](mailto:adusername@example.net)),WIN11-SNG01-Example","10.10.1.100","24.123.132.133","Blocked","1 (A)","NOERROR","domain-visited.com.","Chat,Social Networking","AD Users","AD Users,Anyconnect Roaming Client","Social Networking","506165","FR","8234970"

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 Umbrella DNS. 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 Umbrella DNS on ATT&CK Navigator

Bazar Loader DGA (Domain Generation Algorithm)

Detects Bazar Loader domains based on the Bazar Loader DGA

  • Effort: elementary
Cisco Umbrella Threat Detected

Cisco Umbrella has detected a malicious traffic categorized as malware, phishing or adware.

  • Effort: intermediate
Cobalt Strike DNS Beaconing

Detects suspicious DNS queries known from Cobalt Strike beacons. The threshold is more than 50 suspicious DNS requests to avoid false positives.

  • Effort: advanced
Correlation Potential DNS Tunnel

Detects domain name which is longer than 62 characters and requested at least 50 times in a 10 minutes range time. Long domain names are distinctive of DNS tunnels.

  • Effort: advanced
Cryptomining

Detection of domain names potentially related to cryptomining activities.

  • 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 Domain

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

  • Effort: master
Login Brute-Force Successful On SentinelOne EDR Management Console

A user has attempted to login several times (brute-force) on the SentinelOne EDR Management Console and succeeded to login.

  • Effort: master
Potential DNS Tunnel

Detects domain name which is longer than 62 characters. Long domain names are distinctive of DNS tunnels.

  • Effort: advanced
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
Sliver DNS Beaconing

Detects suspicious DNS queries known from Sliver beaconing

  • Effort: intermediate
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
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

Event Categories

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

Data Source Description
DNS records DNS queries are fully analyzed
Network device logs DNS queries logged by Umbrella DNS

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": " \"2021-02-21 15:30:49\",\"CORP - IP INTERNET\",\"CORP - IP INTERNET\",\"1.1.1.1\",\"1.1.1.1\",\"Blocked\",\"1 (A)\",\"NOERROR\",\"something.net\",\"DNS Tunneling VPN\",\"Networks\",\"Networks\",\"DNS Tunneling VPN\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2021-02-21T15:30:49Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "properties": {
            "Categories": "DNS Tunneling VPN"
        },
        "target": "network-traffic",
        "type": "blocked"
    },
    "dns": {
        "question": {
            "name": "something.net",
            "registered_domain": "something.net",
            "top_level_domain": "net",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "13",
        "type": "query"
    },
    "related": {
        "hosts": [
            "something.net"
        ],
        "ip": [
            "1.1.1.1"
        ],
        "user": [
            "CORP - IP INTERNET"
        ]
    },
    "source": {
        "address": "1.1.1.1",
        "ip": "1.1.1.1",
        "nat": {
            "ip": "1.1.1.1"
        }
    },
    "umbrella": {
        "blocked_categories": [
            "DNS Tunneling VPN"
        ],
        "identity_types": [
            "Networks"
        ],
        "most_granular_identity_type": "Networks"
    },
    "user": {
        "name": "CORP - IP INTERNET"
    }
}

{
    "message": " \"2020-06-12 14:29:47\",\"client\",\"client,FRBCORP\",\"1.1.1.1\",\"2.2.2.2\",\"Allowed\",\"1 (A)\",\"NOERROR\",\"client group\",\"Software/Technology,Business Services,Infrastructure,SaaS and B2B,Science and Technology,Application\",\"AD Users\",\"AD Users,Roaming Computers\",\"\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2020-06-12T14:29:47Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "properties": {
            "Categories": "Software/Technology,Business Services,Infrastructure,SaaS and B2B,Science and Technology,Application"
        },
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "client group",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "12",
        "type": "query"
    },
    "related": {
        "hosts": [
            "client group"
        ],
        "ip": [
            "1.1.1.1",
            "2.2.2.2"
        ],
        "user": [
            "client"
        ]
    },
    "source": {
        "address": "1.1.1.1",
        "ip": "1.1.1.1",
        "nat": {
            "ip": "2.2.2.2"
        }
    },
    "umbrella": {
        "identity_types": [
            "AD Users",
            "Roaming Computers"
        ],
        "most_granular_identity_type": "AD Users"
    },
    "user": {
        "name": "client"
    }
}

{
    "message": " \"2020-06-12 14:29:48\",\"ERT - IP INTERNET\",\"ERT - IP INTERNET\",\"1.1.1.1\",\"1.1.1.1\",\"Allowed\",\"Other\",\"NXDOMAIN\",\"_ldap._tcp.dc._msdcs.subdomain.corp.intra.\",\"\",\"Networks\",\"Networks\",\"\"",
    "event": {
        "outcome": "failure"
    },
    "@timestamp": "2020-06-12T14:29:48Z",
    "action": {
        "name": "DNS query",
        "outcome": "failure",
        "outcome_reason": "NXDOMAIN",
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "_ldap._tcp.dc._msdcs.subdomain.corp.intra",
            "subdomain": "_ldap._tcp.dc._msdcs.subdomain.corp"
        },
        "response_code": "NXDOMAIN",
        "size_in_char": "42",
        "type": "query"
    },
    "related": {
        "hosts": [
            "_ldap._tcp.dc._msdcs.subdomain.corp.intra"
        ],
        "ip": [
            "1.1.1.1"
        ],
        "user": [
            "ERT - IP INTERNET"
        ]
    },
    "source": {
        "address": "1.1.1.1",
        "ip": "1.1.1.1",
        "nat": {
            "ip": "1.1.1.1"
        }
    },
    "umbrella": {
        "identity_types": [
            "Networks"
        ],
        "most_granular_identity_type": "Networks"
    },
    "user": {
        "name": "ERT - IP INTERNET"
    }
}

{
    "message": "\"2024-03-04 11:17:25\",\"Firstname LASTNAME (firstname.lastname@corp.com)\",\"Firstname LASTNAME \n(firstname.lastname@corp.com),FR01-MDBBC-L029.hdb.int,CORP_RANGE_01,CORP\",\"10.1.1.1\",\"80.1.1.1\",\"Allowed\",\"1 (A)\",\"NXDOMAIN\",\"10.1.1.1_1.\",\"\",\"AD Users\",\"AD Users,AD \nComputers,Internal Networks,Sites\",\"\"",
    "event": {
        "outcome": "failure"
    },
    "@timestamp": "2024-03-04T11:17:25Z",
    "action": {
        "name": "DNS query",
        "outcome": "failure",
        "outcome_reason": "NXDOMAIN",
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "10.1.1.1_1",
            "subdomain": "10.1.1",
            "type": "A"
        },
        "response_code": "NXDOMAIN",
        "size_in_char": "11",
        "type": "query"
    },
    "related": {
        "hosts": [
            "10.1.1.1_1"
        ],
        "ip": [
            "10.1.1.1",
            "80.1.1.1"
        ],
        "user": [
            "Firstname LASTNAME (firstname.lastname@corp.com)"
        ]
    },
    "source": {
        "address": "10.1.1.1",
        "ip": "10.1.1.1",
        "nat": {
            "ip": "80.1.1.1"
        }
    },
    "umbrella": {
        "identity_types": [
            "AD Computers",
            "AD Users",
            "Internal Networks",
            "Sites"
        ],
        "most_granular_identity_type": "AD Users"
    },
    "user": {
        "name": "Firstname LASTNAME (firstname.lastname@corp.com)"
    }
}

{
    "message": " \"2024-01-15 17:29:16\",\"CORP - IP INTERNET\",\"CORP - IP INTERNET\",\"1.1.1.1\",\"1.1.1.1\",\"Allowed\",\"1 (A)\",\"NOERROR\",\"emea.corp.\",\"\",\"Networks\",\"Networks\",\"\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2024-01-15T17:29:16Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "emea.corp",
            "subdomain": "emea",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "10",
        "type": "query"
    },
    "related": {
        "hosts": [
            "emea.corp"
        ],
        "ip": [
            "1.1.1.1"
        ],
        "user": [
            "CORP - IP INTERNET"
        ]
    },
    "source": {
        "address": "1.1.1.1",
        "ip": "1.1.1.1",
        "nat": {
            "ip": "1.1.1.1"
        }
    },
    "umbrella": {
        "identity_types": [
            "Networks"
        ],
        "most_granular_identity_type": "Networks"
    },
    "user": {
        "name": "CORP - IP INTERNET"
    }
}

{
    "message": " \"2024-03-12 09:09:48\",\"CD111\",\"CD111\",\"1.1.1.1\",\"1.1.1.1\",\"Allowed\",\"1 (A)\",\"NOERROR\",\"substrate.office.com.\",\"Software/Technology,Webmail,Business Services,Allow List,Organizational Email,Application,Web-based Email,Computers and Internet\",\"Anyconnect Roaming Client\",\"Anyconnect Roaming Client\",\"Allow List\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2024-03-12T09:09:48Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "properties": {
            "Categories": "Software/Technology,Webmail,Business Services,Allow List,Organizational Email,Application,Web-based Email,Computers and Internet"
        },
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "substrate.office.com",
            "registered_domain": "office.com",
            "subdomain": "substrate",
            "top_level_domain": "com",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "21",
        "type": "query"
    },
    "related": {
        "hosts": [
            "substrate.office.com"
        ],
        "ip": [
            "1.1.1.1"
        ],
        "user": [
            "CD111"
        ]
    },
    "source": {
        "address": "1.1.1.1",
        "ip": "1.1.1.1",
        "nat": {
            "ip": "1.1.1.1"
        }
    },
    "umbrella": {
        "blocked_categories": [
            "Allow List"
        ],
        "identity_types": [
            "Anyconnect Roaming Client"
        ],
        "most_granular_identity_type": "Anyconnect Roaming Client"
    },
    "user": {
        "name": "CD111"
    }
}

{
    "message": "\"2024-09-11 18:46:00\",\"Active Directory User ([adusername@example.net](mailto:adusername@example.net))\",\"Active Directory User ([adusername@example.net](mailto:adusername@example.net)),WIN11-SNG01-Example\",\"10.10.1.100\",\"24.123.132.133\",\"Allowed\",\"1 (A)\",\"NOERROR\",\"domain-visited.com.\",\"Software/Technology,Business Services,Allow List,Infrastructure and Content Delivery Networks,SaaS and B2B,Application\",\"AD Users\",\"AD Users,Anyconnect Roaming Client\",\"\",\"506165\",\"\",\"8234970\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2024-09-11T18:46:00Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "properties": {
            "Categories": "Software/Technology,Business Services,Allow List,Infrastructure and Content Delivery Networks,SaaS and B2B,Application"
        },
        "target": "network-traffic",
        "type": "allowed"
    },
    "dns": {
        "question": {
            "name": "domain-visited.com",
            "registered_domain": "domain-visited.com",
            "top_level_domain": "com",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "19",
        "type": "query"
    },
    "organization": {
        "id": "8234970"
    },
    "related": {
        "hosts": [
            "domain-visited.com"
        ],
        "ip": [
            "10.10.1.100",
            "24.123.132.133"
        ],
        "user": [
            "Active Directory User ([adusername@example.net](mailto:adusername@example.net))"
        ]
    },
    "rule": {
        "id": "506165"
    },
    "source": {
        "address": "10.10.1.100",
        "ip": "10.10.1.100",
        "nat": {
            "ip": "24.123.132.133"
        }
    },
    "umbrella": {
        "identity_types": [
            "AD Users",
            "Anyconnect Roaming Client"
        ],
        "most_granular_identity_type": "AD Users"
    },
    "user": {
        "name": "Active Directory User ([adusername@example.net](mailto:adusername@example.net))"
    }
}

{
    "message": "\"2024-09-11 18:46:00\",\"Active Directory User ([adusername@example.net](mailto:adusername@example.net))\",\"Active Directory User ([adusername@example.net](mailto:adusername@example.net)),WIN11-SNG01-Example\",\"10.10.1.100\",\"24.123.132.133\",\"Blocked\",\"1 (A)\",\"NOERROR\",\"domain-visited.com.\",\"Chat,Social Networking\",\"AD Users\",\"AD Users,Anyconnect Roaming Client\",\"Social Networking\",\"506165\",\"FR\",\"8234970\"",
    "event": {
        "outcome": "success"
    },
    "@timestamp": "2024-09-11T18:46:00Z",
    "action": {
        "name": "DNS query",
        "outcome": "success",
        "properties": {
            "Categories": "Chat,Social Networking"
        },
        "target": "network-traffic",
        "type": "blocked"
    },
    "dns": {
        "question": {
            "name": "domain-visited.com",
            "registered_domain": "domain-visited.com",
            "top_level_domain": "com",
            "type": "A"
        },
        "response_code": "NOERROR",
        "size_in_char": "19",
        "type": "query"
    },
    "organization": {
        "id": "8234970"
    },
    "related": {
        "hosts": [
            "domain-visited.com"
        ],
        "ip": [
            "10.10.1.100",
            "24.123.132.133"
        ],
        "user": [
            "Active Directory User ([adusername@example.net](mailto:adusername@example.net))"
        ]
    },
    "rule": {
        "id": "506165"
    },
    "source": {
        "address": "10.10.1.100",
        "ip": "10.10.1.100",
        "nat": {
            "ip": "24.123.132.133"
        }
    },
    "umbrella": {
        "blocked_categories": [
            "Social Networking"
        ],
        "identity_types": [
            "AD Users",
            "Anyconnect Roaming Client"
        ],
        "most_granular_identity_type": "AD Users"
    },
    "user": {
        "name": "Active Directory User ([adusername@example.net](mailto:adusername@example.net))"
    }
}

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.properties.Categories keyword
action.target keyword the target of the action
dns.question.name keyword The name being queried.
dns.question.type keyword The type of record being queried.
dns.response_code keyword The DNS response code.
dns.size_in_char keyword
dns.type keyword The type of DNS event captured, query or answer.
organization.id keyword Unique identifier for the organization.
rule.id keyword Rule ID
source.ip ip IP address of the source.
source.nat.ip ip Source NAT ip
umbrella.blocked_categories array The categories that resulted in the destination being blocked
umbrella.identity_types array The type of identity that made the request.
umbrella.most_granular_identity_type keyword he first identity type matched with this request in order of granularity.
user.name keyword Short name or login of the user.

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

Further Readings