Dataverse - Audit log data deletion

let query_frequency = 1h;
DataverseActivity
| where TimeGenerated >= ago(query_frequency)
| where Message =~ 'DeleteRecordChangeHistory' or Message =~ 'DeleteAuditData'
| extend CloudAppId = int(32780)
| extend AccountName = tostring(split(UserId, "@")[0])
| extend UPNSuffix = tostring(split(UserId, "@")[1])
| project
    TimeGenerated,
    UserId,
    ClientIp,
    UserAgent,
    Message,
    EntityName,
    InstanceUrl,
    AccountName,
    UPNSuffix,
    CloudAppId

relevantTechniques:
- T1070
name: Dataverse - Audit log data deletion
queryPeriod: 14d
triggerThreshold: 0
alertDetailsOverride:
  alertDescriptionFormat: User {{UserId}} deleted audit log data in {{InstanceUrl}}. The message type is  {{Message}}.
  alertDisplayNameFormat: Dataverse - Audit logs deleted in {{InstanceUrl}}
id: f1634822-b7e9-44f5-95ac-fa4a04f14513
eventGroupingSettings:
  aggregationKind: SingleAlert
severity: Low
requiredDataConnectors:
- dataTypes:
  - DataverseActivity
  connectorId: Dataverse
description: Identifies audit log data deletion activity in Dataverse.
version: 3.2.0
status: Available
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountName
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
- entityType: CloudApplication
  fieldMappings:
  - columnName: CloudAppId
    identifier: AppId
  - columnName: InstanceUrl
    identifier: InstanceName
- entityType: IP
  fieldMappings:
  - columnName: ClientIp
    identifier: Address
tactics:
- DefenseEvasion
query: |
  let query_frequency = 1h;
  DataverseActivity
  | where TimeGenerated >= ago(query_frequency)
  | where Message =~ 'DeleteRecordChangeHistory' or Message =~ 'DeleteAuditData'
  | extend CloudAppId = int(32780)
  | extend AccountName = tostring(split(UserId, "@")[0])
  | extend UPNSuffix = tostring(split(UserId, "@")[1])
  | project
      TimeGenerated,
      UserId,
      ClientIp,
      UserAgent,
      Message,
      EntityName,
      InstanceUrl,
      AccountName,
      UPNSuffix,
      CloudAppId  
kind: Scheduled
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Audit log data deletion.yaml
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/f1634822-b7e9-44f5-95ac-fa4a04f14513')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/f1634822-b7e9-44f5-95ac-fa4a04f14513')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "User {{UserId}} deleted audit log data in {{InstanceUrl}}. The message type is  {{Message}}.",
          "alertDisplayNameFormat": "Dataverse - Audit logs deleted in {{InstanceUrl}}"
        },
        "alertRuleTemplateName": "f1634822-b7e9-44f5-95ac-fa4a04f14513",
        "customDetails": null,
        "description": "Identifies audit log data deletion activity in Dataverse.",
        "displayName": "Dataverse - Audit log data deletion",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "AccountName",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "CloudApplication",
            "fieldMappings": [
              {
                "columnName": "CloudAppId",
                "identifier": "AppId"
              },
              {
                "columnName": "InstanceUrl",
                "identifier": "InstanceName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "ClientIp",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Business Applications/Analytic Rules/Dataverse - Audit log data deletion.yaml",
        "query": "let query_frequency = 1h;\nDataverseActivity\n| where TimeGenerated >= ago(query_frequency)\n| where Message =~ 'DeleteRecordChangeHistory' or Message =~ 'DeleteAuditData'\n| extend CloudAppId = int(32780)\n| extend AccountName = tostring(split(UserId, \"@\")[0])\n| extend UPNSuffix = tostring(split(UserId, \"@\")[1])\n| project\n    TimeGenerated,\n    UserId,\n    ClientIp,\n    UserAgent,\n    Message,\n    EntityName,\n    InstanceUrl,\n    AccountName,\n    UPNSuffix,\n    CloudAppId\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Low",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1070"
        ],
        "templateVersion": "3.2.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}