Sigma rule: System Network Connections Discovery - MacOs

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-063f69ff1802, updated 2022-12-28T00:00:00.000Z.

Rule

Title
System Network Connections Discovery - MacOs
Status
test
Level
informational
Author
Daniil Yugoslavskiy, oscd.community
Date
2020-10-19
Modified
2022-12-28
File
rules/macos/process_creation/proc_creation_macos_system_network_connections_discovery.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects usage of system utilities to discover system network connections

Log source

product
macos
category
process_creation

Detection

selection:
    Image|endswith:
        - '/who'
        - '/w'
        - '/last'
        - '/lsof'
        - '/netstat'
condition: selection

False positives (as the rule lists them)

  • Legitimate activities

Tags

  • attack.discovery
  • attack.t1049

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/macos/process_creation/proc_creation_macos_system_network_connections_discovery.yml

Sources and licences

  • SigmaHQ

    "System Network Connections Discovery - MacOs" by Daniil Yugoslavskiy, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/macos/process_creation/proc_creation_macos_system_network_connections_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 Connections Discovery - MacOs",
entity page, dataset version ref-063f69ff1802, updated 2022-12-28T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/9a7a0393-2144-4626-9bf1-7c2f5a7321db (accessed 2026-11-03).
Underlying source: SigmaHQ rule 9a7a0393-2144-4626-9bf1-7c2f5a7321db, 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.