Suspicious sAMAccountName change

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
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
  • Requires:
    • eXtended Threat Hunting (XTH)

Detection Modules

Identity Analytics

ATT&CK Tactic

ATT&CK Technique

Severity

Low

Description

The name of a machine account was changed to a sAMAccountName with a missing trailing dollar sign.

Attacker's Goals

Elevate privileges from standard domain user to domain admin.

Investigative actions

  • Check if the domain controller is patched or vulnerable to the attack.
  • Check if any associated TGTs or service tickets were granted.
  • Follow actions by the account and if it performed a DCSync.

Variations

Suspicious sAMAccountName change to DC hostname

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Medium

Description

The name of a machine account was changed to a sAMAccountName with a missing trailing dollar sign.

Attacker's Goals

Elevate privileges from standard domain user to domain admin.

Investigative actions

  • Check if the domain controller is patched or vulnerable to the attack.
  • Check if any associated TGTs or service tickets were granted.
  • Follow actions by the account and if it performed a DCSync.