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31 lines
1.4 KiB
YAML
31 lines
1.4 KiB
YAML
title: DLL Execution via Rasautou.exe
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id: cd3d1298-eb3b-476c-ac67-12847de55813
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description: Detects using Rasautou.exe for loading arbitrary .DLL specified in -d option and executes the export specified in -p.
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status: experimental
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references:
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- https://lolbas-project.github.io/lolbas/Binaries/Rasautou/
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- https://github.com/fireeye/DueDLLigence
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- https://www.fireeye.com/blog/threat-research/2019/10/staying-hidden-on-the-endpoint-evading-detection-with-shellcode.html
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author: Julia Fomina, oscd.community
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date: 2020/10/09
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tags:
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- attack.defense_evasion
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- attack.t1218
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logsource:
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product: windows
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category: process_creation
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definition: Since options '-d' and '-p' were removed in Windows 10 this rule is relevant only for Windows before 10. And as Windows 7 doesn't log command line in 4688 by default, to detect this attack you need Sysmon 1 configured or KB3004375 installed for command-line auditing (https://support.microsoft.com/en-au/help/3004375/microsoft-security-advisory-update-to-improve-windows-command-line-aud)
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detection:
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use_rasautou:
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Image|endswith: '\rasautou.exe'
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remaned_rasautou:
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OriginalFileName: 'rasdlui.exe'
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special_keys:
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CommandLine|contains|all:
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- '-d'
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- '-p'
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condition: (use_rasautou or remaned_rasautou) and special_keys
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level: medium
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falsepositives:
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- Unlikely
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