Suspicious Removal of Azure Service Principal (via auditlogs)

This rule detects when a service principal was removed in Azure.

SigmamediumCloudv1
sigma
title: Suspicious Removal of Azure Service Principal (via auditlogs)
id: bc0dc78a-151e-5ade-8a86-b2411756b743
status: stable
description: This rule detects when a service principal was removed in Azure.
references:
    - https://learn.microsoft.com/en-us/entra/identity/monitoring-health/reference-audit-activities#core-directory
    - https://techcommunity.microsoft.com/blog/microsoft-entra-blog/keeping-track-of-object-deletions-in-microsoft-entra-id/4053415
author: Huntrule Team
date: 2026-07-01
tags:
    - attack.stealth
    - attack.impact
    - attack.t1531
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        operationName: 'Remove service principal'
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.