Suspicious Guest User Invited By Non Approved Inviters (via auditlogs)

title: Suspicious Guest User Invited By Non Approved Inviters (via auditlogs)
id: d704d848-892d-55f0-aa9b-913e4c278e2e
status: stable
description: This rule detects when a user that doesn't have permissions to invite a guest user attempts to invite one.
references:
    - https://attack.mitre.org/techniques/T1078/004/
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts#things-to-monitor
author: Huntrule Team
date: 2026-01-10
tags:
    - attack.privilege-escalation
    - attack.initial-access
    - attack.persistence
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message: Invite external user
        Status: failure
    condition: selection
falsepositives:
    - Unknown
level: medium