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win_system_eventlog_cleared.yml
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win_system_eventlog_cleared.yml
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title: Eventlog Cleared
id: a62b37e0-45d3-48d9-a517-90c1a1b0186b
related:
- id: f2f01843-e7b8-4f95-a35a-d23584476423
type: obsoletes
- id: d99b79d2-0a6f-4f46-ad8b-260b6e17f982
type: derived
- id: 100ef69e-3327-481c-8e5c-6d80d9507556
type: derived
status: experimental
description: One of the Windows Eventlogs has been cleared. e.g. caused by "wevtutil cl" command execution
references:
- https://twitter.com/deviouspolack/status/832535435960209408
- https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100
author: Florian Roth (Nextron Systems)
date: 2017/01/10
modified: 2023/11/15
tags:
- attack.defense_evasion
- attack.t1070.001
- car.2016-04-002
logsource:
product: windows
service: system
detection:
selection:
EventID: 104
Provider_Name: 'Microsoft-Windows-Eventlog'
filter_main_covered:
# The channels below are already covered by the rule 100ef69e-3327-481c-8e5c-6d80d9507556
Channel:
- 'Microsoft-Windows-PowerShell/Operational'
- 'Microsoft-Windows-Sysmon/Operational'
- 'PowerShellCore/Operational'
- 'Security'
- 'System'
- 'Windows PowerShell'
condition: selection and not 1 of filter_main_*
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)
level: medium