entra_id_application_hard_deletion

rule entra_id_application_hard_deletion {

  meta:
    author = "Google Cloud Security"
    description = "Deletion of Entra ID application with no recovery of the application."
    rule_id = "mr_b4b8a401-4803-498a-b601-d984cf5042fa"
    rule_name = "Entra ID Application Hard Deletion"
    type = "alert"
    platform = "azure"
    data_source = "azure ad audit"
    severity = "Medium"
    priority = "Medium"

  events:
    $app.metadata.event_type = "SETTING_DELETION"
    $app.metadata.product_event_type = "Hard Delete application"
    $app.metadata.product_name = "Azure AD Directory Audit"
    $app.metadata.vendor_name = "Microsoft"
    $app.security_result.action = "ALLOW"
    $app.principal.user.userid = $user

  match:
    $user over 5m

  outcome:
    $risk_score = 65
    $event_count = count_distinct($app.metadata.id)
    $principal_ip = array_distinct($app.principal.ip)
    $principal_email = array_distinct($app.principal.user.email_addresses)
    $principal_county_region = array_distinct($app.principal.ip_geo_artifact.location.country_or_region)
    $user_agent = array_distinct($app.network.http.user_agent)
    $network_session = array_distinct($app.network.session_id)
    $target_application = array_distinct($app.target.resource.name)
    $target_application_id = array_distinct($app.target.resource.product_object_id)

  condition:
    $app
}