SigmaHQ/rules/linux/lnx_susp_named.yml

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title: Suspicious Named Error
status: experimental
description: Detects suspicious DNS error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts
references:
- https://github.com/ossec/ossec-hids/blob/master/etc/rules/named_rules.xml
author: Florian Roth
date: 2018/02/20
logsource:
product: linux
service: syslog
detection:
keywords:
- '* dropping source port zero packet from *'
- '* denied AXFR from *'
- '* exiting (due to fatal error)*'
condition: keywords
falsepositives:
- Unknown
level: high