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21 lines
726 B
YAML
21 lines
726 B
YAML
title: DNS C2 Detection
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status: experimental
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description: Normally, there exists a limited amount of different dns queries for a single domain. If a huge number of dns queries were performed for a single domain, this can be an indicator that DNS is used for transferring data.
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references:
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- https://zeltser.com/c2-dns-tunneling/
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- https://patrick-bareiss.com/detect-c2-traffic-over-dns-using-sigma/
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author: Patrick Bareiss
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date: 2019/04/07
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logsource:
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product: dns
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detection:
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selection:
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parent_domain: '*'
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condition: selection | count(dns_query) by parent_domain > 1000
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falsepositives:
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- Valid software, which uses dns for transferring data
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level: high
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tags:
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- attack.c2
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- attack.t1043
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