Security Eventlog Cleared

calendar Dec 21, 2023 · attack.defense_evasion attack.t1070.001 car.2016-04-002  ·
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One of the Windows Eventlogs has been cleared. e.g. caused by "wevtutil cl" command execution

Sigma rule (View on GitHub)

 1title: Security Eventlog Cleared
 2id: d99b79d2-0a6f-4f46-ad8b-260b6e17f982
 3related:
 4    - id: f2f01843-e7b8-4f95-a35a-d23584476423
 5      type: obsoletes
 6    - id: a122ac13-daf8-4175-83a2-72c387be339d
 7      type: obsoletes
 8status: test
 9description: One of the Windows Eventlogs has been cleared. e.g. caused by "wevtutil cl" command execution
10references:
11    - https://twitter.com/deviouspolack/status/832535435960209408
12    - https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100
13    - https://github.com/Azure/Azure-Sentinel/blob/f99542b94afe0ad2f19a82cc08262e7ac8e1428e/Detections/SecurityEvent/SecurityEventLogCleared.yaml
14author: Florian Roth (Nextron Systems)
15date: 2017/01/10
16modified: 2022/02/24
17tags:
18    - attack.defense_evasion
19    - attack.t1070.001
20    - car.2016-04-002
21logsource:
22    product: windows
23    service: security
24detection:
25    selection_517:
26        EventID: 517
27        Provider_Name: Security
28    selection_1102:
29        EventID: 1102
30        Provider_Name: Microsoft-Windows-Eventlog
31    condition: 1 of selection_*
32falsepositives:
33    - Rollout of log collection agents (the setup routine often includes a reset of the local Eventlog)
34    - System provisioning (system reset before the golden image creation)
35level: high

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