Unusual user account unlock

Cortex XSIAM Analytics Alert Reference by Alert name

Product
Cortex XSIAM
Last date published
2025-02-14
Category
Analytics Alert Reference
Index by
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires one of the following data sources:
    • Windows Event Collector
      OR
    • XDR Agent with eXtended Threat Hunting (XTH)

Detection Modules

Identity Analytics

Detector Tags

ATT&CK Tactic

Initial Access (TA0001)

ATT&CK Technique

Valid Accounts (T1078)

Severity

Informational

Description

A user unlocked an account. This user does not usually unlock user accounts.

Attacker's Goals

An attacker may unlock a user account to gain unauthorized access.

Investigative actions

  • Investigate the associated authentication attempts and login failures (e.g. 4625, 4776 events).
  • Check if the user is authorized to unlock accounts.
  • Confirm that the user unlock was expected.
  • Monitor services that may be running with a user's credentials, resulting in lockouts.

Variations

Unusual sensitive user account unlock

Synopsis

ATT&CK Tactic

Initial Access (TA0001)

ATT&CK Technique

Valid Accounts (T1078)

Severity

Low

Description

A user unlocked a sensitive account. This user does not usually unlock user accounts.

Attacker's Goals

An attacker may unlock a user account to gain unauthorized access.

Investigative actions

  • Investigate the associated authentication attempts and login failures (e.g. 4625, 4776 events).
  • Check if the user is authorized to unlock accounts.
  • Confirm that the user unlock was expected.
  • Monitor services that may be running with a user's credentials, resulting in lockouts.