User added to Microsoft Entra ID Privileged Groups

id: 4d94d4a9-dc96-410a-8dea-4d4d4584188b
name: User added to Microsoft Entra ID Privileged Groups
description: |
  'This will alert when a user is added to any of the Privileged Groups.
  For further information on AuditLogs please see https://docs.microsoft.com/azure/active-directory/reports-monitoring/reference-audit-activities.
  For Administrator role permissions in Microsoft Entra ID please see https://docs.microsoft.com/azure/active-directory/users-groups-roles/directory-assign-admin-roles'
severity: Medium
requiredDataConnectors:
  - connectorId: AzureActiveDirectory
    dataTypes:
      - AuditLogs
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
status: Available
tactics:
  - Persistence
  - PrivilegeEscalation
relevantTechniques:
  - T1098
  - T1078
tags:
  - DEV-0537
query: |
  let OperationList = dynamic(["Add member to role","Add eligible member to role"]);
  let PrivilegedGroups = dynamic(["UserAccountAdmins","PrivilegedRoleAdmins","TenantAdmins","PrivilegedAuthenticationAdmins"]);
  AuditLogs
  | where Category =~ "RoleManagement"
  | where OperationName in~ (OperationList)
  | mv-apply TargetResource = TargetResources on 
    (
        where TargetResource.type =~ "User"
        | extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
                 modProps = TargetResource.modifiedProperties
    )
  | mv-apply Property = modProps on 
    (
        where Property.displayName =~ "Role.WellKnownObjectName"
        | extend DisplayName = trim('"',tostring(Property.displayName)),
                 GroupName = trim('"',tostring(Property.newValue))
    )
  | extend InitiatingAppId = InitiatedBy.app.appId
  | extend InitiatingAppName = tostring(InitiatedBy.app.displayName)
  | extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)
  | extend InitiatingAppServicePrincipalName = tostring(InitiatedBy.app.servicePrincipalName)
  | extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
  | extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
  | extend InitiatingIpAddress = tostring(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
  | extend InitiatingUserRoles = InitiatedBy.user.roles
  | where GroupName in~ (PrivilegedGroups)
  // If you don't want to alert for operations from PIM, remove below filtering for MS-PIM.
  //| where InitiatingAppName != "MS-PIM" and InitiatingAppName != "MS-PIM-Fairfax"
  | project TimeGenerated, AADOperationType, Category, OperationName, AADTenantId, InitiatingUserPrincipalName, InitiatingAadUserId, InitiatingAppId, InitiatingAppName, InitiatingAppServicePrincipalName, InitiatingAppServicePrincipalId, InitiatingIpAddress, DisplayName, GroupName, InitiatingUserRoles, TargetUserPrincipalName
  | extend AccountName = tostring(split(InitiatingUserPrincipalName,'@',0)[0]), AccountUPNSuffix = tostring(split(InitiatingUserPrincipalName,'@',1)[0])
  | extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: InitiatingUserPrincipalName   
      - identifier: Name
        columnName: AccountName      
      - identifier: UPNSuffix
        columnName: AccountUPNSuffix
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: TargetUserPrincipalName   
      - identifier: Name
        columnName: TargetName      
      - identifier: UPNSuffix
        columnName: TargetUPNSuffix
  - entityType: Account
    fieldMappings:
      - identifier: AadUserId
        columnName: InitiatingAadUserId
  - entityType: Account
    fieldMappings:
      - identifier: AadUserId
        columnName: InitiatingAppServicePrincipalId
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: InitiatingIpAddress
version: 1.0.7
kind: Scheduled