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33 lines
1.1 KiB
YAML
33 lines
1.1 KiB
YAML
title: DNSCat2 Powershell Implementation Detection Via Process Creation
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id: b11d75d6-d7c1-11ea-87d0-0242ac130003
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status: experimental
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description: The PowerShell implementation of DNSCat2 calls nslookup to craft queries. Counting nslookup processes spawned by PowerShell will show hundreds or thousands of instances if PS DNSCat2 is active locally.
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author: Cian Heasley
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reference:
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- https://github.com/lukebaggett/dnscat2-powershell
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- https://blu3-team.blogspot.com/2019/08/powershell-dns-c2-notes.html
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- https://ragged-lab.blogspot.com/2020/06/it-is-always-dns-powershell-edition.html
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date: 2020/08/08
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tags:
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- attack.command_and_control
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- attack.t1071
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- attack.t1071.004
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- attack.t1001.003
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- attack.t1041
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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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ParentImage|endswith: '*\powershell.exe'
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Image|endswith: '*\nslookup.exe'
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CommandLine|endswith: '*\nslookup.exe'
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condition: selection | count(Image) by ParentImage > 100
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fields:
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- Image
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- CommandLine
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- ParentImage
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falsepositives:
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- Other powershell scripts that call nslookup.exe
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level: high
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