Sigma rule: Disabling Security Tools - Builtin

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-95afe5760e48, updated 2022-11-26T00:00:00.000Z.

Rule

Title
Disabling Security Tools - Builtin
Status
test
Level
medium
Author
Ömer Günal, Alejandro Ortuno, oscd.community
Date
2020-06-17
Modified
2022-11-26
File
rules/linux/builtin/syslog/lnx_syslog_security_tools_disabling_syslog.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects disabling security tools

Log source

product
linux
service
syslog

Detection

keywords:
    - 'stopping iptables'
    - 'stopping ip6tables'
    - 'stopping firewalld'
    - 'stopping cbdaemon'
    - 'stopping falcon-sensor'
condition: keywords

False positives (as the rule lists them)

  • Legitimate administration activities

Tags

  • attack.defense-impairment
  • attack.t1686

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/builtin/syslog/lnx_syslog_security_tools_disabling_syslog.yml

Sources and licences

  • SigmaHQ

    "Disabling Security Tools - Builtin" by Ömer Günal, Alejandro Ortuno, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/builtin/syslog/lnx_syslog_security_tools_disabling_syslog.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Disabling Security Tools - Builtin",
entity page, dataset version ref-95afe5760e48, updated 2022-11-26T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/49f5dfc1-f92e-4d34-96fa-feba3f6acf36 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 49f5dfc1-f92e-4d34-96fa-feba3f6acf36, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.