Conditional Access - A Conditional Access policy was updated

// A Conditional Access policy was updated.
AuditLogs
| where OperationName == "Update conditional access policy"
| extend
    policy = tostring(TargetResources[0].displayName),
    modifiedBy = tostring(InitiatedBy.user.userPrincipalName),
    oldPolicy = tostring(TargetResources[0].modifiedProperties[0].oldValue),
    newPolicy = tostring(TargetResources[0].modifiedProperties[0].newValue)
| extend
    accountName = tostring(split(modifiedBy, "@")[0]),
    upnSuffix = tostring(split(modifiedBy, "@")[1])
| project
    TimeGenerated,
    OperationName,
    policy,
    modifiedBy,
    accountName,
    upnSuffix,
    oldPolicy,
    newPolicy,
    Result

requiredDataConnectors:
- connectorId: AzureActiveDirectory
  dataTypes:
  - AuditLogs
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: false
    lookbackDuration: PT1H
    reopenClosedIncident: false
    matchingMethod: AllEntities
name: Conditional Access - A Conditional Access policy was updated
severity: Informational
triggerOperator: gt
relevantTechniques:
- T1562
suppressionDuration: 5h
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: accountName
  - identifier: UPNSuffix
    columnName: upnSuffix
eventGroupingSettings:
  aggregationKind: AlertPerResult
suppressionEnabled: false
query: |+
  // A Conditional Access policy was updated.
  AuditLogs
  | where OperationName == "Update conditional access policy"
  | extend
      policy = tostring(TargetResources[0].displayName),
      modifiedBy = tostring(InitiatedBy.user.userPrincipalName),
      oldPolicy = tostring(TargetResources[0].modifiedProperties[0].oldValue),
      newPolicy = tostring(TargetResources[0].modifiedProperties[0].newValue)
  | extend
      accountName = tostring(split(modifiedBy, "@")[0]),
      upnSuffix = tostring(split(modifiedBy, "@")[1])
  | project
      TimeGenerated,
      OperationName,
      policy,
      modifiedBy,
      accountName,
      upnSuffix,
      oldPolicy,
      newPolicy,
      Result

id: ccca6b88-a7b6-41c9-9be2-fc3daeb65b26
queryPeriod: 5m
description: A Conditional Access policy was updated in Entra ID.
tactics:
- DefenseEvasion
kind: Scheduled
version: 1.0.2
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Entra%20ID/Analytic%20Rules/Conditional%20Access%20-%20A%20Conditional%20Access%20policy%20was%20updated.yaml
queryFrequency: 5m
triggerThreshold: 0

{
  "$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/ccca6b88-a7b6-41c9-9be2-fc3daeb65b26')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ccca6b88-a7b6-41c9-9be2-fc3daeb65b26')]",
      "properties": {
        "alertRuleTemplateName": "ccca6b88-a7b6-41c9-9be2-fc3daeb65b26",
        "customDetails": null,
        "description": "A Conditional Access policy was updated in Entra ID.",
        "displayName": "Conditional Access - A Conditional Access policy was updated",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "accountName",
                "identifier": "Name"
              },
              {
                "columnName": "upnSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT1H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Entra%20ID/Analytic%20Rules/Conditional%20Access%20-%20A%20Conditional%20Access%20policy%20was%20updated.yaml",
        "query": "// A Conditional Access policy was updated.\nAuditLogs\n| where OperationName == \"Update conditional access policy\"\n| extend\n    policy = tostring(TargetResources[0].displayName),\n    modifiedBy = tostring(InitiatedBy.user.userPrincipalName),\n    oldPolicy = tostring(TargetResources[0].modifiedProperties[0].oldValue),\n    newPolicy = tostring(TargetResources[0].modifiedProperties[0].newValue)\n| extend\n    accountName = tostring(split(modifiedBy, \"@\")[0]),\n    upnSuffix = tostring(split(modifiedBy, \"@\")[1])\n| project\n    TimeGenerated,\n    OperationName,\n    policy,\n    modifiedBy,\n    accountName,\n    upnSuffix,\n    oldPolicy,\n    newPolicy,\n    Result\n\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "Informational",
        "subTechniques": [],
        "suppressionDuration": "PT5H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1562"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}