Suspicious User Removed From Group With CA Policy Change Access (via auditlogs)

title: Suspicious User Removed From Group With CA Policy Change Access (via auditlogs)
id: a5150dc9-560f-5af3-ba5e-91898d5d5a33
status: stable
description: This rule detects group membership removal of groups that have CA policy modification access
references:
    - https://attack.mitre.org/techniques/T1556/
    - https://attack.mitre.org/techniques/T1548/
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-infrastructure#conditional-access
author: Huntrule Team
date: 2026-05-05
tags:
    - attack.privilege-escalation
    - attack.credential-access
    - attack.persistence
    - attack.defense-impairment
    - attack.t1548
    - attack.t1556
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Remove member from group
    condition: selection
falsepositives:
    - Unknown
level: medium