Suspicious Linux Doas Conf File Creation (via file_event)

title: Suspicious Linux Doas Conf File Creation (via file_event)
id: 0609a70d-c130-5be6-ab53-f9b6967133f1
status: stable
description: This rule detects the creation of doas.conf file in linux host platform.
references:
    - https://attack.mitre.org/techniques/T1548/
    - https://research.splunk.com/endpoint/linux_doas_conf_file_creation/
    - https://www.makeuseof.com/how-to-install-and-use-doas/
author: Huntrule Team
date: 2026-03-17
tags:
    - attack.privilege-escalation
    - attack.t1548
logsource:
    product: linux
    category: file_event
detection:
    selection:
        TargetFilename|endswith: '/etc/doas.conf'
    condition: selection
falsepositives:
    - Unknown
level: medium