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
status: Available
triggerThreshold: 0
severity: Medium
tactics:
- Persistence
- Collection
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleWorkspaceReports/Analytic Rules/GWorkspaceDifferentUAsFromSingleIP.yaml
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
queryPeriod: 1h
queryFrequency: 1h
version: 1.0.1
triggerOperator: gt
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  
relevantTechniques:
- T1185
- T1176
id: 6ff0e16e-5999-11ec-bf63-0242ac130002
requiredDataConnectors:
- dataTypes:
  - GWorkspaceActivityReports
  connectorId: GoogleWorkspaceReportsAPI
kind: Scheduled
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-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",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Collection",
          "Persistence"
        ],
        "techniques": [
          "T1176",
          "T1185"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}