Account Disabled or Blocked for Sign in Attempts — Sigma Rule

Rule metadata and linked tags

Author: Yochana Henderson, '@Yochana-H'. Source status: test; severity: medium. Source dates: 2022-06-17 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: c57d684537262e61cc6676c8f459bae679bc397e66223d33c1fcef07d6112b97

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: Account Disabled or Blocked for Sign in Attempts
id: 4afac85c-224a-4dd7-b1af-8da40e1c60bd
status: test
description: Detects when an account is disabled or blocked for sign in but tried to log in
references:
    - https://learn.microsoft.com/en-gb/entra/architecture/security-operations-privileged-accounts
author: Yochana Henderson, '@Yochana-H'
date: 2022-06-17
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        ResultType: 50057
        ResultDescription: Failure
    condition: selection
falsepositives:
    - Account disabled or blocked in error
    - Automation account has been blocked or disabled
level: medium

Original YAML and metadata in JSON

False positives

• Account disabled or blocked in error
• Automation account has been blocked or disabled

Source references

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