Conditional Access - A Conditional Access policy was deleted

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Id	2e96fa64-ac4d-4c92-b79e-e9c54b5d8230
Rulename	Conditional Access - A Conditional Access policy was deleted
Description	A Conditional Access policy was deleted from Entra ID.
Severity	Low
Tactics	DefenseEvasion
Techniques	T1562.007
Required data connectors	AzureActiveDirectory
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access policy was deleted.yaml
Version	1.0.1
Arm template	2e96fa64-ac4d-4c92-b79e-e9c54b5d8230.json

KQL

// A Conditional Access policy was deleted.
AuditLogs
| where OperationName in ("Delete conditional access policy")
| extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)
| extend accountName = tostring(split(modifiedBy, "@")[0])
| extend upnSuffix = tostring(split(modifiedBy, "@")[1])
| project
    TimeGenerated,
    OperationName,
    policy = TargetResources[0].displayName,
    modifiedBy,
    accountName,
    upnSuffix,
    result = Result,
    oldPolicy = TargetResources[0].modifiedProperties[0].oldValue
| order by TimeGenerated desc

YAML

kind: Scheduled
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: PT1H
    enabled: false
    groupByAlertDetails: []
    reopenClosedIncident: false
    matchingMethod: AllEntities
    groupByCustomDetails: []
    groupByEntities: []
  createIncident: true
requiredDataConnectors:
- connectorId: AzureActiveDirectory
  dataTypes:
  - AuditLogs
relevantTechniques:
- T1562.007
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: accountName
  - identifier: UPNSuffix
    columnName: upnSuffix
query: |
  // A Conditional Access policy was deleted.
  AuditLogs
  | where OperationName in ("Delete conditional access policy")
  | extend modifiedBy = tostring(InitiatedBy.user.userPrincipalName)
  | extend accountName = tostring(split(modifiedBy, "@")[0])
  | extend upnSuffix = tostring(split(modifiedBy, "@")[1])
  | project
      TimeGenerated,
      OperationName,
      policy = TargetResources[0].displayName,
      modifiedBy,
      accountName,
      upnSuffix,
      result = Result,
      oldPolicy = TargetResources[0].modifiedProperties[0].oldValue
  | order by TimeGenerated desc  
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Entra ID/Analytic Rules/Conditional Access - A Conditional Access policy was deleted.yaml
suppressionEnabled: false
queryPeriod: 5m
tactics:
- DefenseEvasion
name: Conditional Access - A Conditional Access policy was deleted
eventGroupingSettings:
  aggregationKind: AlertPerResult
description: A Conditional Access policy was deleted from Entra ID.
id: 2e96fa64-ac4d-4c92-b79e-e9c54b5d8230
version: 1.0.1
triggerOperator: gt
queryFrequency: 5m
severity: Low
suppressionDuration: 5h

ARM