Hidden Local User Creation

 Original Source: [Sigma source]
Title: Hidden Local User Creation
Status: test
Description:Detects the creation of a local hidden user account which should not happen for event ID 4720.
References:
  -https://twitter.com/SBousseaden/status/1387743867663958021
Author: Christian Burkard (Nextron Systems)
Date: 2021-05-03
modified:2024-01-16
Tags:
  • -'attack.persistence'
  • -'attack.t1136.001'
Logsource:
  • product: windows
  • service: security
Detection:
  selection:
    EventID: '4720'
    TargetUserName|endswith: '$'
  filter_main_homegroup:
    TargetUserName: 'HomeGroupUser$'
  condition:selection and not 1 of filter_main_*
Falsepositives:
  -Unknown
Level: high