Symlink Etc Passwd

Description

Detects suspicious command lines that look as if they would create symbolic links to /etc/passwd

Query · sigma

keywords:
- ln -s -f /etc/passwd
- ln -s /etc/passwd
condition: keywords

Known false positives

  • Unknown
Raw source Symlink Etc Passwd · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Symlink Etc Passwd
id: c67fc22a-0be5-4b4f-aad5-2b32c4b69523
status: test
description: Detects suspicious command lines that look as if they would create symbolic links to /etc/passwd
references:
    - https://www.qualys.com/2021/05/04/21nails/21nails.txt
author: Florian Roth (Nextron Systems)
date: 2019-04-05
modified: 2021-11-27
tags:
    - attack.t1204.001
    - attack.execution
logsource:
    product: linux
detection:
    keywords:
        - 'ln -s -f /etc/passwd'
        - 'ln -s /etc/passwd'
    condition: keywords
falsepositives:
    - Unknown
level: high

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