
title: Suspicious Windows ANONYMOUS LOGON Local Account Created
author: James Pemberton / @4A616D6573
date: 2019/10/31
description: Detects the creation of suspicious accounts similar to ANONYMOUS LOGON,
  such as using additional spaces. Created as an covering detection for exclusion
  of Logon Type 3 from ANONYMOUS LOGON accounts.
detection:
  SELECTION_1:
    EventID: 4720
  SELECTION_2:
    SamAccountName: '*ANONYMOUS*'
  SELECTION_3:
    SamAccountName: '*LOGON*'
  condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
falsepositives:
- Unknown
id: 1bbf25b9-8038-4154-a50b-118f2a32be27
level: high
logsource:
  product: windows
  service: security
modified: 2021/07/06
references:
- https://twitter.com/SBousseaden/status/1189469425482829824
status: experimental
tags:
- attack.persistence
- attack.t1136
- attack.t1136.001
- attack.t1136.002
ruletype: SIGMA
