Microsoft Sentinel Analytic Rules
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GWorkspace - Multiple user agents for single source

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Id6ff0e16e-5999-11ec-bf63-0242ac130002
RulenameGWorkspace - Multiple user agents for single source
DescriptionDetects requests with different user agents from one source in short timeframe.
SeverityMedium
TacticsPersistence
Collection
TechniquesT1185
T1176
Required data connectorsGoogleWorkspaceReportsAPI
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
Version1.0.1
Arm template6ff0e16e-5999-11ec-bf63-0242ac130002.json
Deploy To Azure
let threshold = 5;
GWorkspaceActivityReports
| where isnotempty(UserAgentOriginal)
| summarize user_ua = makeset(UserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
| where array_length(user_ua) > threshold
| extend IPCustomEntity = SrcIpAddr
name: GWorkspace - Multiple user agents for single source
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
queryPeriod: 1h
version: 1.0.1
severity: Medium
id: 6ff0e16e-5999-11ec-bf63-0242ac130002
triggerOperator: gt
triggerThreshold: 0
kind: Scheduled
requiredDataConnectors:
- dataTypes:
  - GWorkspaceActivityReports
  connectorId: GoogleWorkspaceReportsAPI
relevantTechniques:
- T1185
- T1176
description: |
    'Detects requests with different user agents from one source in short timeframe.'
query: |
  let threshold = 5;
  GWorkspaceActivityReports
  | where isnotempty(UserAgentOriginal)
  | summarize user_ua = makeset(UserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)
  | where array_length(user_ua) > threshold
  | extend IPCustomEntity = SrcIpAddr  
tactics:
- Persistence
- Collection
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
status: Available
queryFrequency: 1h
{
  "$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/6ff0e16e-5999-11ec-bf63-0242ac130002')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6ff0e16e-5999-11ec-bf63-0242ac130002')]",
      "properties": {
        "alertRuleTemplateName": "6ff0e16e-5999-11ec-bf63-0242ac130002",
        "customDetails": null,
        "description": "'Detects requests with different user agents from one source in short timeframe.'\n",
        "displayName": "GWorkspace - Multiple user agents for single source",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml",
        "query": "let threshold = 5;\nGWorkspaceActivityReports\n| where isnotempty(UserAgentOriginal)\n| summarize user_ua = makeset(UserAgentOriginal) by SrcIpAddr, bin(TimeGenerated, 5m)\n| where array_length(user_ua) > threshold\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection",
          "Persistence"
        ],
        "techniques": [
          "T1176",
          "T1185"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}