39 lines
1.1 KiB
YAML
39 lines
1.1 KiB
YAML
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title: Suspicious PsExec Execution
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ruletype: Sigma
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author: Samir Bousseaden
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date: 2019/04/03
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description: detects execution of psexec or paexec with renamed service name, this
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rule helps to filter out the noise if psexec is used for legit purposes or if attacker
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uses a different psexec client other than sysinternal one
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detection:
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SELECTION_1:
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EventID: 5145
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SELECTION_2:
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ShareName: \\\*\IPC$
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SELECTION_3:
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RelativeTargetName:
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- '*-stdin'
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- '*-stdout'
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- '*-stderr'
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SELECTION_4:
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RelativeTargetName: PSEXESVC*
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condition: ((SELECTION_1 and SELECTION_2 and SELECTION_3) and not (SELECTION_4))
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falsepositives:
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- nothing observed so far
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id: c462f537-a1e3-41a6-b5fc-b2c2cef9bf82
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level: high
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logsource:
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definition: The advanced audit policy setting "Object Access > Audit Detailed File
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Share" must be configured for Success/Failure
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product: windows
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service: security
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modified: 2021/12/08
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references:
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- https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html
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status: test
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tags:
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- attack.lateral_movement
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- attack.t1077
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- attack.t1021.002
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