frack113
24 lines
568 B
YAML
24 lines
568 B
YAML
title: Suspicious DNS Query with B64 Encoded String
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id: 4153a907-2451-4e4f-a578-c52bb6881432
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status: experimental
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description: Detects suspicious DNS queries using base64 encoding
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author: Florian Roth
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date: 2018/05/10
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modified: 2021/08/09
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references:
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- https://github.com/krmaxwell/dns-exfiltration
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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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query|contains: '==.'
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condition: selection
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falsepositives:
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- Unknown
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level: medium
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tags:
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- attack.exfiltration
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- attack.t1048.003
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- attack.command_and_control
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- attack.t1071.004
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