2019-11-12 22:12:27 +00:00
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title: Suspicious Csc.exe Source File Folder
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id: dcaa3f04-70c3-427a-80b4-b870d73c94c4
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2019-08-24 11:49:40 +00:00
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description: Detects a suspicious execution of csc.exe, which uses a source in a suspicious folder (e.g. AppData)
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status: experimental
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references:
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- https://securityboulevard.com/2019/08/agent-tesla-evading-edr-by-removing-api-hooks/
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2019-08-31 06:44:09 +00:00
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- https://www.clearskysec.com/wp-content/uploads/2018/11/MuddyWater-Operations-in-Lebanon-and-Oman.pdf
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2019-08-24 11:49:40 +00:00
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- https://app.any.run/tasks/c6993447-d1d8-414e-b856-675325e5aa09/
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2019-12-17 10:05:43 +00:00
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- https://twitter.com/gN3mes1s/status/1206874118282448897
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2019-08-24 11:49:40 +00:00
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author: Florian Roth
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date: 2019/08/24
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2020-09-05 17:35:21 +00:00
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modified: 2020/09/05
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2019-08-24 11:49:40 +00:00
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tags:
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- attack.defense_evasion
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- attack.t1500
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logsource:
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category: process_creation
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product: windows
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detection:
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selection:
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Image: '*\csc.exe'
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2020-06-16 20:46:08 +00:00
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CommandLine:
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2019-09-04 11:05:58 +00:00
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- '*\AppData\\*'
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- '*\Windows\Temp\\*'
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2019-12-17 10:05:43 +00:00
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filter:
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2020-06-16 20:46:08 +00:00
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ParentImage:
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2019-12-17 12:45:40 +00:00
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- 'C:\Program Files*' # https://twitter.com/gN3mes1s/status/1206874118282448897
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- '*\sdiagnhost.exe' # https://twitter.com/gN3mes1s/status/1206874118282448897
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- '*\w3wp.exe' # https://twitter.com/gabriele_pippi/status/1206907900268072962
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2019-12-17 10:05:43 +00:00
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condition: selection and not filter
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2019-08-24 11:49:40 +00:00
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falsepositives:
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2019-12-17 12:45:40 +00:00
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- https://twitter.com/gN3mes1s/status/1206874118282448897
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- https://twitter.com/gabriele_pippi/status/1206907900268072962
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2019-08-24 11:49:40 +00:00
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level: high
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