Microsoft Sentinel Analytic Rules
cloudbrothers.infoAzure Sentinel RepoToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeBack to homepage

GCP IAM - Empty user agent

Back
Id9e0d8632-d33d-4075-979e-c972674f77b3
RulenameGCP IAM - Empty user agent
DescriptionDetects requests where user agent is empty.
SeverityMedium
TacticsDefenseEvasion
TechniquesT1550
Required data connectorsGCPIAMDataConnector
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformIAM/Analytic Rules/GCPIAMEmptyUA.yaml
Version1.0.0
Arm template9e0d8632-d33d-4075-979e-c972674f77b3.json
Deploy To Azure
GCP_IAM
| where isempty(HttpUserAgentOriginal)
| extend timestamp = TimeGenerated, AccountCustomEntity = PayloadAuthenticationinfoPrincipalemail, IPCustomEntity = SrcIpAddr
name: GCP IAM - Empty user agent
triggerOperator: gt
status: Available
relevantTechniques:
- T1550
query: |
  GCP_IAM
  | where isempty(HttpUserAgentOriginal)
  | extend timestamp = TimeGenerated, AccountCustomEntity = PayloadAuthenticationinfoPrincipalemail, IPCustomEntity = SrcIpAddr  
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformIAM/Analytic Rules/GCPIAMEmptyUA.yaml
description: |
    'Detects requests where user agent is empty.'
triggerThreshold: 0
id: 9e0d8632-d33d-4075-979e-c972674f77b3
kind: Scheduled
severity: Medium
version: 1.0.0
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: AccountCustomEntity
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
queryFrequency: 1h
queryPeriod: 1h
requiredDataConnectors:
- dataTypes:
  - GCP_IAM
  connectorId: GCPIAMDataConnector
tactics:
- DefenseEvasion
{
  "$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/9e0d8632-d33d-4075-979e-c972674f77b3')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9e0d8632-d33d-4075-979e-c972674f77b3')]",
      "properties": {
        "alertRuleTemplateName": "9e0d8632-d33d-4075-979e-c972674f77b3",
        "customDetails": null,
        "description": "'Detects requests where user agent is empty.'\n",
        "displayName": "GCP IAM - Empty user agent",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountCustomEntity",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "IPCustomEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/GoogleCloudPlatformIAM/Analytic Rules/GCPIAMEmptyUA.yaml",
        "query": "GCP_IAM\n| where isempty(HttpUserAgentOriginal)\n| extend timestamp = TimeGenerated, AccountCustomEntity = PayloadAuthenticationinfoPrincipalemail, IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "Medium",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1550"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}