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28 lines
759 B
YAML
28 lines
759 B
YAML
title: DNS TXT Answer with Possible Execution Strings
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id: 8ae51330-899c-4641-8125-e39f2e07da72
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status: experimental
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description: Detects strings used in command execution in DNS TXT Answer
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author: Markus Neis
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date: 2018/08/08
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modified: 2020/08/27
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references:
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- https://twitter.com/stvemillertime/status/1024707932447854592
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- https://github.com/samratashok/nishang/blob/master/Backdoors/DNS_TXT_Pwnage.ps1
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logsource:
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category: dns
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detection:
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selection:
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record_type: 'TXT'
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answer|contains:
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- 'IEX'
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- 'Invoke-Expression'
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- 'cmd.exe'
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condition: selection
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falsepositives:
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- Unknown
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level: high
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tags:
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- attack.command_and_control
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- attack.t1071 # an old one
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- attack.t1071.004
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