Tailscale New API access token or OAuth client created

Tailscale_Audit_CL
      | where Action == "CREATE"
      | where tostring(Target.type) in ("API_KEY", "OAUTH_CLIENT")
      | extend ActorLogin = tostring(Actor.loginName)
      | extend TargetName = tostring(Target.name)
      | extend TargetId = tostring(Target.id)
      | project TimeGenerated, ActorLogin, Action, TargetName, TargetId, Origin, New

incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    enabled: true
    matchingMethod: AllEntities
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: ActorLogin
    identifier: FullName
query: |
  Tailscale_Audit_CL
        | where Action == "CREATE"
        | where tostring(Target.type) in ("API_KEY", "OAUTH_CLIENT")
        | extend ActorLogin = tostring(Actor.loginName)
        | extend TargetName = tostring(Target.name)
        | extend TargetId = tostring(Target.id)
        | project TimeGenerated, ActorLogin, Action, TargetName, TargetId, Origin, New
id: 668b43fd-cf28-961a-85af-957850df5027
queryFrequency: 15m
status: Available
version: 1.0.0
severity: Medium
relevantTechniques:
- T1098
- T1136
name: 'Tailscale: New API access token or OAuth client created'
kind: Scheduled
tactics:
- Persistence
- CredentialAccess
requiredDataConnectors:
- dataTypes:
  - Tailscale_Audit_CL
  connectorId: TailscaleCCF
description: |
  Identifies when a new API access token or OAuth client is created in the tailnet. These grant programmatic access - verify the actor and intent.
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tailscale%20%28CCF%29/Analytic%20Rules/TailscaleNewAPIaccesstokenorOAuthclientcreated.yaml
triggerOperator: gt
triggerThreshold: 0
queryPeriod: 15m

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/668b43fd-cf28-961a-85af-957850df5027')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/668b43fd-cf28-961a-85af-957850df5027')]",
      "properties": {
        "alertRuleTemplateName": "668b43fd-cf28-961a-85af-957850df5027",
        "customDetails": null,
        "description": "Identifies when a new API access token or OAuth client is created in the tailnet. These grant programmatic access - verify the actor and intent.\n",
        "displayName": "Tailscale: New API access token or OAuth client created",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorLogin",
                "identifier": "FullName"
              }
            ]
          }
        ],
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tailscale%20%28CCF%29/Analytic%20Rules/TailscaleNewAPIaccesstokenorOAuthclientcreated.yaml",
        "query": "Tailscale_Audit_CL\n      | where Action == \"CREATE\"\n      | where tostring(Target.type) in (\"API_KEY\", \"OAUTH_CLIENT\")\n      | extend ActorLogin = tostring(Actor.loginName)\n      | extend TargetName = tostring(Target.name)\n      | extend TargetId = tostring(Target.id)\n      | project TimeGenerated, ActorLogin, Action, TargetName, TargetId, Origin, New\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT15M",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess",
          "Persistence"
        ],
        "techniques": [
          "T1098",
          "T1136"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}