Azure AD Account Disabled or Blocked Login Attempt Failures (Sign-in Logs)

Alerts when Azure sign-in attempts fail because the target account is disabled or blocked.

FreeReviewedSigma · Medium · v5

Product: azure
Service: signinlogs
Author: Yochana Henderson, '@Yochana-H' (SigmaHQ), DRL 1.1
Published: 2022-06-17
Updated: 2026-07-31

ATT&CK techniques

Initial Access → Defense Evasion

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
Priv Esc
- T1078.004Cloud Accounts
Defense Evasion
- T1078.004Cloud Accounts
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule flags sign-in attempts in Azure AD sign-in logs that fail with the specific result code indicating the target account is disabled or blocked for sign-in. Attackers may trigger these events when trying compromised or pre-disabled accounts to test access paths or probe identity controls. It relies on sign-in log telemetry fields that capture the failure ResultType and ResultDescription for the attempted authentication.

Reporting behind it

Related detections9 linkedT1078.004 — drag to rearrange

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Azure AD Account Disabled or Blocked Login Attempt Failures (Sign-in Logs)

Pivot detection · T1078.004 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

azure-entra-sign-in-logs-account-disabled-or-blocked-on-failed-login-attempts-4afac85c

title: Azure AD Account Disabled or Blocked Login Attempt Failures (Sign-in Logs)
id: f0dbd13b-4444-43f8-9a1e-f48d260bc0c1
status: test
description: This rule flags sign-in attempts in Azure AD sign-in logs that fail with the specific result code indicating the target account is disabled or blocked for sign-in. Attackers may trigger these events when trying compromised or pre-disabled accounts to test access paths or probe identity controls. It relies on sign-in log telemetry fields that capture the failure ResultType and ResultDescription for the attempted authentication.
references:
  - https://learn.microsoft.com/en-gb/entra/architecture/security-operations-privileged-accounts
  - https://github.com/SigmaHQ/sigma/blob/master/rules/cloud/azure/signin_logs/azure_blocked_account_attempt.yml
author: Yochana Henderson, '@Yochana-H', Huntrule Team
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
license: DRL-1.1
related:
  - id: 4afac85c-224a-4dd7-b1af-8da40e1c60bd
    type: derived

Convert

This rule as a query you can run. Uses no unlock credit.

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