frack113
20 lines
586 B
YAML
20 lines
586 B
YAML
title: High DNS Bytes Out
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id: 3b6e327d-8649-4102-993f-d25786481589
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status: experimental
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description: High DNS queries bytes amount from host per short period of time
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author: Daniil Yugoslavskiy, oscd.community
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date: 2019/10/24
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modified: 2021/09/21
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tags:
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- attack.exfiltration
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- attack.t1048.003
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logsource:
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category: firewall
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detection:
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selection:
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dst_port: 53
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timeframe: 1m
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condition: selection | sum(message_size) by src_ip > 300000
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falsepositives:
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- Legitimate high DNS bytes out rate to domain name which should be added to whitelist
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level: medium |