Tanaka Zakku
54 lines
1.5 KiB
YAML
54 lines
1.5 KiB
YAML
title: Image Load of VSS_PS.dll by Uncommon Executable
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author: Markus Neis, @markus_neis
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date: 2021/07/07
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description: Detects the image load of vss_ps.dll by uncommon executables using OriginalFileName
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datapoint
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detection:
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SELECTION_1:
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EventID: 7
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SELECTION_10:
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Image: '*dismhost.exe'
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SELECTION_11:
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Image: '*taskhostw.exe'
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SELECTION_12:
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Image: '*\clussvc.exe'
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SELECTION_13:
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Image: '*c:\windows\\*'
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SELECTION_2:
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ImageLoaded: '*\vss_ps.dll'
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SELECTION_3:
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Image: '*\svchost.exe'
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SELECTION_4:
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Image: '*\msiexec.exe'
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SELECTION_5:
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Image: '*\vssvc.exe'
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SELECTION_6:
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Image: '*\srtasks.exe'
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SELECTION_7:
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Image: '*\tiworker.exe'
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SELECTION_8:
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Image: '*\dllhost.exe'
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SELECTION_9:
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Image: '*\searchindexer.exe'
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condition: (SELECTION_1 and (SELECTION_2) and not ((SELECTION_3 or SELECTION_4
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or SELECTION_5 or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9
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or SELECTION_10 or SELECTION_11 or SELECTION_12) and SELECTION_13))
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falsepositives:
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- unknown
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id: 333cdbe8-27bb-4246-bf82-b41a0dca4b70
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level: high
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logsource:
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category: image_load
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product: windows
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references:
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- 1bd85e1caa1415ebdc8852c91e37bbb7
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- https://twitter.com/am0nsec/status/1412232114980982787
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.impact
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- attack.t1490
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yml_filename: win_suspicious_vss_ps_load.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/image_load
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