Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
29 lines
1.1 KiB
YAML
29 lines
1.1 KiB
YAML
title: Use Of The SFTP.EXE Binary As A LOLBIN
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id: a85ffc3a-e8fd-4040-93bf-78aff284d801
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status: test
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description: Detects the usage of the "sftp.exe" binary as a LOLBIN by abusing the "-D" flag
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references:
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- https://github.com/LOLBAS-Project/LOLBAS/pull/264
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author: Nasreddine Bencherchali (Nextron Systems)
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date: 2022-11-10
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tags:
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- attack.defense-evasion
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- attack.execution
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- attack.t1218
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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|endswith: '\sftp.exe' # The "sftp.exe" located in the OpenSSH directory has no OriginalFileName :(
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CommandLine|contains:
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# Since "-D" is a valid flag for other usage we assume the user is going to enter a path
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# Either a full one like "C:\Windows\System32\calc.exe" or a relative one "..\..\..\Windows\System32\calc.exe"
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# In my testing you can't execute direct binaries by their name via this method (if you found a way please update the rule)
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- ' -D ..'
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- ' -D C:\'
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condition: selection
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falsepositives:
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- Unknown
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level: medium
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