Suspicious Login to Disabled Account (via signinlogs)

title: Suspicious Login to Disabled Account (via signinlogs)
id: ef082ca5-d351-5ecb-ac3d-5e87672a43e0
status: stable
description: This rule detects failed attempts to sign in to disabled accounts.
references:
    - https://attack.mitre.org/techniques/T1078/004/
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts
author: Huntrule Team
date: 2026-04-05
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        ResultType: 50057
        ResultDescription: 'User account is disabled. The account has been disabled by an administrator.'
    condition: selection
falsepositives:
    - Unknown
level: medium