High DNS Bytes Out

level
status experimental

High DNS queries bytes amount from host per short period of time

Known false-positives

  • Legitimate high DNS bytes out rate to domain name which should be added to whitelist

Raw rule (edit)

title: High DNS Bytes Out
id: 0f6c1bf5-70a5-4963-aef9-aab1eefb50bd
status: experimental
description: High DNS queries bytes amount from host per short period of time
author: Daniil Yugoslavskiy, oscd.community
date: 2019/10/24
modified: 2021/09/21
tags:
    - attack.exfiltration
    - attack.t1048.003
logsource:
    category: dns
detection:
    selection:
        query: '*'
    timeframe: 1m
    condition: selection | sum(question_length) by src_ip > 300000
falsepositives:
    - Legitimate high DNS bytes out rate to domain name which should be added to whitelist
level: medium

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