Google DNS - Possible data exfiltration

GCPCloudDNS
| where Query has 'webhook.site'
| extend DNSCustomEntity = Query, IPCustomEntity = SrcIpAddr

relevantTechniques:
- T1567
name: Google DNS - Possible data exfiltration
requiredDataConnectors:
- dataTypes:
  - GCPCloudDNS
  connectorId: GCPDNSDataConnector
entityMappings:
- fieldMappings:
  - identifier: DomainName
    columnName: DNSCustomEntity
  entityType: DNS
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
triggerThreshold: 0
id: 705bed63-668f-4508-9d2d-26faf4010700
tactics:
- Exfiltration
version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformDNS/Analytic Rules/GCPDNSDataExfiltration.yaml
queryPeriod: 15m
kind: Scheduled
queryFrequency: 15m
severity: High
description: |
    'Detects possible data exfiltration.'
query: |
  GCPCloudDNS
  | where Query has 'webhook.site'
  | extend DNSCustomEntity = Query, IPCustomEntity = SrcIpAddr  
triggerOperator: gt

{
  "$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/705bed63-668f-4508-9d2d-26faf4010700')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/705bed63-668f-4508-9d2d-26faf4010700')]",
      "properties": {
        "alertRuleTemplateName": "705bed63-668f-4508-9d2d-26faf4010700",
        "customDetails": null,
        "description": "'Detects possible data exfiltration.'\n",
        "displayName": "Google DNS - Possible data exfiltration",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "DNSCustomEntity",
                "identifier": "DomainName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformDNS/Analytic Rules/GCPDNSDataExfiltration.yaml",
        "query": "GCPCloudDNS\n| where Query has 'webhook.site'\n| extend DNSCustomEntity = Query, IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT15M",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration"
        ],
        "techniques": [
          "T1567"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}