Detection rules › Sigma
Event log clear attempt (wmi)
Detects scenarios where an attacker attempts to clear the event logs.
Known false positives
- None
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth | |
| Defense Impairment |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Event log clear attempt (wmi)
description: Detects scenarios where an attacker attempts to clear the event logs.
references:
- https://github.com/mdecrevoisier/EVTX-to-MITRE-Attack/tree/master/TA0005-Defense%20Evasion/T1070.001-Clear%20Windows%20event%20logs
- https://www.windows-commandline.com/backup-delete-event-log-files/
- https://lolbas-project.github.io/lolbas/Binaries/Wmic/
tags:
- attack.defense_evasion
- attack.t1070.001
author: mdecrevoisier
status: experimental
logsource:
product: windows
category: process_creation
detection: # full command: "wmic nteventlog where filename="security" cleareventlog"
selection:
NewProcessName|endswith: '\WMIC.exe'
CommandLine|contains|all:
- wmic
- cleareventlog
condition: selection
falsepositives:
- None
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
NewProcessName|endswith: '\WMIC.exe'
CommandLine|contains|all:
- wmic
- cleareventlog
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
NewProcessName | ends_with |
| field:"Image" kind:ends_with value:"\WMIC.exe" |