41 lines
1.1 KiB
YAML
41 lines
1.1 KiB
YAML
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title: Sysmon Channel Reference Deletion
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author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
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date: 2020/07/14
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description: Potential threat actor tampering with Sysmon manifest and eventually
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disabling it
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detection:
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SELECTION_1:
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ObjectName:
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- '*WINEVT\Publishers\{5770385f-c22a-43e0-bf4c-06f5698ffbd9}*'
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- '*WINEVT\Channels\Microsoft-Windows-Sysmon/Operational*'
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SELECTION_2:
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EventID: 4657
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SELECTION_3:
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ObjectValueName: Enabled
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SELECTION_4:
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NewValue: '0'
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SELECTION_5:
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EventID: 4663
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SELECTION_6:
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AccessMask: 65536
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condition: (SELECTION_1 and ((SELECTION_2 and SELECTION_3 and SELECTION_4) or (SELECTION_5
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and SELECTION_6)))
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falsepositives:
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- unknown
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id: 18beca67-ab3e-4ee3-ba7a-a46ca8d7d0cc
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level: critical
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logsource:
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product: windows
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service: security
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references:
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- https://twitter.com/Flangvik/status/1283054508084473861
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- https://twitter.com/SecurityJosh/status/1283027365770276866
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- https://securityjosh.github.io/2020/04/23/Mute-Sysmon.html
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- https://gist.github.com/Cyb3rWard0g/cf08c38c61f7e46e8404b38201ca01c8
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1112
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ruletype: SIGMA
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