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detect vacuuming of journald as clearing syslog #5050

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Summary of the Pull Request

Add 'journalctl --vacuum' to the CommandLine Contains selection in order to also detect the deletion of system logs via the command 'journalctl' with either the parameter 'vacuum-size' or 'vacuum-time'. Since systemd is the most prevalent init-System in Linux and journald is the destination for syslogs in systemd, this addition should add a layer of security.

Changelog

update: Commands to Clear or Remove the Syslog - detect journald vacuuming

Example Log Event

NA

Fixed Issues

NA

SigmaHQ Rule Creation Conventions

  • If your PR adds new rules, please consider following and applying these conventions

@github-actions github-actions bot added Rules Linux Pull request add/update linux related rules labels Oct 14, 2024
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@frack113 frack113 added the 2nd Review Needed PR need a second approval label Dec 12, 2024
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