Login to Disabled Account — Sigma Rule

Rule metadata and linked tags

Author: AlertIQ. Source status: test; severity: medium. Source dates: 2021-10-10 / 2022-12-25.

{
  "product": "azure",
  "service": "signinlogs"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b0521dd4f1cf761618b7d33002f18d29c22e2720a9cd5d3235e2a17b5206f8cb

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Login to Disabled Account
id: 908655e0-25cf-4ae1-b775-1c8ce9cf43d8
status: test
description: Detect failed attempts to sign in to disabled accounts.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts
author: AlertIQ
date: 2021-10-10
modified: 2022-12-25
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

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts