32 lines
803 B
YAML
32 lines
803 B
YAML
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title: Suspicious Calculator Usage
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ruletype: Sigma
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author: Florian Roth
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date: 2019/02/09
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description: Detects suspicious use of calc.exe with command line parameters or in
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a suspicious directory, which is likely caused by some PoC or detection evasion
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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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CommandLine: '*\calc.exe *'
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SELECTION_3:
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Image: '*\calc.exe'
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SELECTION_4:
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Image: '*\Windows\Sys*'
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condition: (SELECTION_1 and (SELECTION_2 or (SELECTION_3 and not (SELECTION_4))))
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falsepositives:
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- Unknown
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id: 737e618a-a410-49b5-bec3-9e55ff7fbc15
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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: 2021/11/27
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references:
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- https://twitter.com/ItsReallyNick/status/1094080242686312448
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status: test
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tags:
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- attack.defense_evasion
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- attack.t1036
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