Dataverse - Audit logging disabled

let query_frequency = 1h;
DataverseActivity
| where TimeGenerated >= ago(query_frequency)
| where Message =~ 'UpdateAuditSettings'
| mv-expand Fields
| extend AuditValue = Fields.Name, AuditEnabled = tobool(Fields.Value)
| where not (AuditEnabled)
| extend
    CloudAppId = int(32780),
    AccountName = tostring(split(UserId, '@')[0]),
    UPNSuffix = tostring(split(UserId, '@')[1])
| project
    TimeGenerated,
    UserId,
    ClientIp,
    OriginalObjectId,
    AuditValue,
    AuditEnabled,
    InstanceUrl,
    CloudAppId,
    AccountName,
    UPNSuffix

entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountName
  - identifier: UPNSuffix
    columnName: UPNSuffix
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: ClientIp
- entityType: CloudApplication
  fieldMappings:
  - identifier: AppId
    columnName: CloudAppId
  - identifier: InstanceName
    columnName: InstanceUrl
queryFrequency: 1h
name: Dataverse - Audit logging disabled
alertDetailsOverride:
  alertDisplayNameFormat: 'Dataverse - Audit logging was disabled in {{InstanceUrl}} '
  alertDescriptionFormat: 'Audit settings changes were detected in {{InstanceUrl}}. {{AuditValue}} enabled: was set to {{AuditEnabled}}.'
kind: Scheduled
tactics:
- DefenseEvasion
triggerThreshold: 0
query: |
  let query_frequency = 1h;
  DataverseActivity
  | where TimeGenerated >= ago(query_frequency)
  | where Message =~ 'UpdateAuditSettings'
  | mv-expand Fields
  | extend AuditValue = Fields.Name, AuditEnabled = tobool(Fields.Value)
  | where not (AuditEnabled)
  | extend
      CloudAppId = int(32780),
      AccountName = tostring(split(UserId, '@')[0]),
      UPNSuffix = tostring(split(UserId, '@')[1])
  | project
      TimeGenerated,
      UserId,
      ClientIp,
      OriginalObjectId,
      AuditValue,
      AuditEnabled,
      InstanceUrl,
      CloudAppId,
      AccountName,
      UPNSuffix  
relevantTechniques:
- T1562
triggerOperator: gt
queryPeriod: 14d
eventGroupingSettings:
  aggregationKind: SingleAlert
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Audit logging disabled.yaml
severity: Low
status: Available
id: ea07523b-e6b8-469b-9e25-cdef1ae6fb45
requiredDataConnectors:
- connectorId: Dataverse
  dataTypes:
  - DataverseActivity
version: 3.2.0
description: Identifies a change in system audit configuration whereby audit logging is turned off.

{
  "$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/ea07523b-e6b8-469b-9e25-cdef1ae6fb45')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ea07523b-e6b8-469b-9e25-cdef1ae6fb45')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "Audit settings changes were detected in {{InstanceUrl}}. {{AuditValue}} enabled: was set to {{AuditEnabled}}.",
          "alertDisplayNameFormat": "Dataverse - Audit logging was disabled in {{InstanceUrl}} "
        },
        "alertRuleTemplateName": "ea07523b-e6b8-469b-9e25-cdef1ae6fb45",
        "customDetails": null,
        "description": "Identifies a change in system audit configuration whereby audit logging is turned off.",
        "displayName": "Dataverse - Audit logging disabled",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "ClientIp",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "CloudAppId",
                "identifier": "AppId"
              },
              {
                "columnName": "InstanceUrl",
                "identifier": "InstanceName"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Audit logging disabled.yaml",
        "query": "let query_frequency = 1h;\nDataverseActivity\n| where TimeGenerated >= ago(query_frequency)\n| where Message =~ 'UpdateAuditSettings'\n| mv-expand Fields\n| extend AuditValue = Fields.Name, AuditEnabled = tobool(Fields.Value)\n| where not (AuditEnabled)\n| extend\n    CloudAppId = int(32780),\n    AccountName = tostring(split(UserId, '@')[0]),\n    UPNSuffix = tostring(split(UserId, '@')[1])\n| project\n    TimeGenerated,\n    UserId,\n    ClientIp,\n    OriginalObjectId,\n    AuditValue,\n    AuditEnabled,\n    InstanceUrl,\n    CloudAppId,\n    AccountName,\n    UPNSuffix\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Low",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1562"
        ],
        "templateVersion": "3.2.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}