Sigma rule: System Network Discovery - Linux

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-2c30887e9546, updated 2022-09-15T00:00:00.000Z.

Rule

Title
System Network Discovery - Linux
Status
test
Level
informational
Author
Ömer Günal and remotephone, oscd.community
Date
2020-10-06
Modified
2022-09-15
File
rules/linux/process_creation/proc_creation_lnx_system_network_discovery.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects enumeration of local network configuration

Log source

product
linux
category
process_creation

Detection

selection_img:
    Image|endswith:
        - '/firewall-cmd'
        - '/ufw'
        - '/iptables'
        - '/netstat'
        - '/ss'
        - '/ip'
        - '/ifconfig'
        - '/systemd-resolve'
        - '/route'
selection_cli:
    CommandLine|contains: '/etc/resolv.conf'
condition: 1 of selection_*

False positives (as the rule lists them)

  • Legitimate administration activities

Tags

  • attack.discovery
  • attack.t1016

MITRE ATT&CK ids this rule names

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/process_creation/proc_creation_lnx_system_network_discovery.yml

Sources and licences

  • SigmaHQ

    "System Network Discovery - Linux" by Ömer Günal and remotephone, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/linux/process_creation/proc_creation_lnx_system_network_discovery.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: System Network Discovery - Linux",
entity page, dataset version ref-2c30887e9546, updated 2022-09-15T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/e7bd1cfa-b446-4c88-8afb-403bcd79e3fa (accessed 2026-11-03).
Underlying source: SigmaHQ rule e7bd1cfa-b446-4c88-8afb-403bcd79e3fa, 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.