52 lines
1.4 KiB
YAML
52 lines
1.4 KiB
YAML
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title: Suspicious Eventlog Clear or Configuration Using Wevtutil
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author: Ecco, Daniil Yugoslavskiy, oscd.community
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date: 2019/09/26
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description: Detects clearing or configuration of eventlogs using wevtutil, powershell
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and wmic. Might be used by ransomwares during the attack (seen by NotPetya and others).
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_2:
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Image: '*\powershell.exe'
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SELECTION_3:
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CommandLine:
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- '*Clear-EventLog*'
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- '*Remove-EventLog*'
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- '*Limit-EventLog*'
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SELECTION_4:
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Image: '*\wmic.exe'
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SELECTION_5:
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CommandLine: '* ClearEventLog *'
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SELECTION_6:
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EventID: 1
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SELECTION_7:
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Image: '*\wevtutil.exe'
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SELECTION_8:
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CommandLine:
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- '*clear-log*'
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- '* cl *'
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- '*set-log*'
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- '* sl *'
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condition: (SELECTION_1 and (((SELECTION_2 and SELECTION_3) or (SELECTION_4 and
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SELECTION_5)) or (SELECTION_6 and SELECTION_7 and SELECTION_8)))
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falsepositives:
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- Admin activity
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- Scripts and administrative tools used in the monitored environment
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id: cc36992a-4671-4f21-a91d-6c2b72a2edf5
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level: high
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logsource:
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category: process_creation
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product: windows
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modified: 2019/11/11
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.001/T1070.001.md
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- https://eqllib.readthedocs.io/en/latest/analytics/5b223758-07d6-4100-9e11-238cfdd0fe97.html
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1070.001
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- attack.t1070
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- car.2016-04-002
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ruletype: SIGMA
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