High DNS Requests Rate

level
status experimental

High DNS requests amount from host per short period of time

Known false-positives

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

Raw rule (edit)

title: High DNS Requests Rate
id: 51186749-7415-46be-90e5-6914865c825a
status: experimental
description: High DNS requests 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
    - attack.command_and_control
    - attack.t1071.004
logsource:
    category: firewall
detection:
    selection:    
        dst_port: 53
    timeframe: 1m
    condition: selection | count() by src_ip > 1000
falsepositives:
    - Legitimate high DNS requests rate to domain name which should be added to whitelist
level: medium

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