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34 lines
997 B
YAML
34 lines
997 B
YAML
title: Silence.Downloader V3
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id: 170901d1-de11-4de7-bccb-8fa13678d857
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status: experimental
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description: Detects Silence downloader. These commands are hardcoded into the binary.
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author: Alina Stepchenkova, Roman Rezvukhin, Group-IB, oscd.community
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date: 2019/11/01
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modified: 2019/11/22
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tags:
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- attack.persistence
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- attack.g0091
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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_recon:
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Image|endswith:
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- '\tasklist.exe'
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- '\qwinsta.exe'
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- '\ipconfig.exe'
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- '\hostname.exe'
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CommandLine|contains: '>>'
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CommandLine|endswith: 'temps.dat'
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selection_persistence:
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CommandLine|contains: '/C REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinNetworkSecurity" /t REG_SZ /d'
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condition: selection_recon | near selection_persistence # requires both
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fields:
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- ComputerName
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- User
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- Image
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- CommandLine
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falsepositives:
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- Unknown
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level: high
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