{
  "$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/6e480329-84bc-409a-b97b-22e8102af3ca')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6e480329-84bc-409a-b97b-22e8102af3ca')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "{{Events}} events of type {{Message}} detected in {{InstanceUrl}} could indicate suspicious or malicious activity.",
          "alertDisplayNameFormat": "Dataverse - High number of record access modification events detected"
        },
        "alertRuleTemplateName": "6e480329-84bc-409a-b97b-22e8102af3ca",
        "customDetails": null,
        "description": "Identifies individual record ownership changes including sharing of records with other users/teams or re-assignment of ownership exceeding a pre-defined threshold.",
        "displayName": "Dataverse - Bulk record ownership re-assignment or sharing",
        "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": "AlertPerResult"
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Business%20Applications/Analytic%20Rules/Dataverse%20-%20Bulk%20record%20ownership%20re-assignment%20or%20sharing.yaml",
        "query": "// Set threshold for number of shared/assigned records\nlet detection_threshold = 100;\nlet query_frequency = 1h;\nDataverseActivity\n| where TimeGenerated >= ago(query_frequency)\n| where Message in (\"ModifyAccess\", \"Assign\", \"GrantAccess\")\n| summarize\n    FirstEvent = min(TimeGenerated),\n    LastEvent = max(TimeGenerated),\n    Events = count()\n    by UserId, Message, InstanceUrl, ClientIp\n| where Events > detection_threshold\n| extend\n    CloudAppId = int(32780),\n    AccountName = tostring(split(UserId, '@')[0]),\n    UPNSuffix = tostring(split(UserId, '@')[1])\n| project\n    FirstEvent,\n    LastEvent,\n    Message,\n    Events,\n    UserId,\n    ClientIp,\n    InstanceUrl,\n    CloudAppId,\n    AccountName,\n    UPNSuffix\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P1D",
        "severity": "Medium",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "PrivilegeEscalation"
        ],
        "techniques": [
          "T1548"
        ],
        "templateVersion": "3.2.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}