Nasreddine Bencherchali
44 lines
1.7 KiB
YAML
44 lines
1.7 KiB
YAML
title: Renamed PAExec Execution
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id: c4e49831-1496-40cf-8ce1-b53f942b02f9
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related:
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- id: 7b0666ad-3e38-4e3d-9bab-78b06de85f7b
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type: obsoletes
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status: test
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description: Detects execution of renamed version of PAExec. Often used by attackers
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references:
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- https://www.poweradmin.com/paexec/
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- https://summit.fireeye.com/content/dam/fireeye-www/summit/cds-2018/presentations/cds18-technical-s05-att&cking-fin7.pdf
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author: Florian Roth (Nextron Systems), Jason Lynch
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date: 2021/05/22
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modified: 2023/02/14
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tags:
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- attack.defense_evasion
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- attack.t1202
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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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- Description: 'PAExec Application'
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- OriginalFileName: 'PAExec.exe'
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- Product|contains: 'PAExec'
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- Imphash:
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- 11D40A7B7876288F919AB819CC2D9802
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- 6444f8a34e99b8f7d9647de66aabe516
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- dfd6aa3f7b2b1035b76b718f1ddc689f
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- 1a6cca4d5460b1710a12dea39e4a592c
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- Hashes|contains:
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- IMPHASH=11D40A7B7876288F919AB819CC2D9802
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- IMPHASH=6444f8a34e99b8f7d9647de66aabe516
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- IMPHASH=dfd6aa3f7b2b1035b76b718f1ddc689f
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- IMPHASH=1a6cca4d5460b1710a12dea39e4a592c
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filter:
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- Image|endswith: '\paexec.exe'
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- Image|startswith: 'C:\Windows\PAExec-'
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condition: selection and not filter
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falsepositives:
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- Weird admins that rename their tools
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- Software companies that bundle PAExec with their software and rename it, so that it is less embarrassing
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- When executed with the "-s" flag. PAExec will copy itself to the "C:\Windows\" directory with a different name. Usually like this "PAExec-[XXXXX]-[ComputerName]"
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level: high
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