title: Eventlog Cleared
author: Florian Roth
date: 2017/01/10
description: One of the Windows Eventlogs has been cleared. e.g. caused by "wevtutil
  cl" command execution
detection:
  SELECTION_1:
    EventID: 104
  SELECTION_2:
    Provider_Name: Microsoft-Windows-Eventlog
  condition: (SELECTION_1 and SELECTION_2)
falsepositives:
- Rollout of log collection agents (the setup routine often includes a reset of the
  local Eventlog)
- System provisioning (system reset before the golden image creation)
id: a62b37e0-45d3-48d9-a517-90c1a1b0186b
level: high
logsource:
  product: windows
  service: system
modified: 2021/10/13
references:
- https://twitter.com/deviouspolack/status/832535435960209408
- https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100
related:
- id: f2f01843-e7b8-4f95-a35a-d23584476423
  type: obsoletes
- id: d99b79d2-0a6f-4f46-ad8b-260b6e17f982
  type: derived
status: experimental
tags:
- attack.defense_evasion
- attack.t1070
- attack.t1070.001
- car.2016-04-002
ruletype: SIGMA