Sigma rule: Macos Remote System Discovery

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-67f776257c56, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Macos Remote System Discovery
Status
test
Level
informational
Author
Alejandro Ortuno, oscd.community
Date
2020-10-22
Modified
2021-11-27
File
rules/macos/process_creation/proc_creation_macos_remote_system_discovery.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the enumeration of other remote systems.

Log source

product
macos
category
process_creation

Detection

selection_1:
    Image|endswith: '/arp'
    CommandLine|contains: '-a'
selection_2:
    Image|endswith: '/ping'
    CommandLine|contains:
        - ' 10.' # 10.0.0.0/8
        - ' 192.168.' # 192.168.0.0/16
        - ' 172.16.' # 172.16.0.0/12
        - ' 172.17.'
        - ' 172.18.'
        - ' 172.19.'
        - ' 172.20.'
        - ' 172.21.'
        - ' 172.22.'
        - ' 172.23.'
        - ' 172.24.'
        - ' 172.25.'
        - ' 172.26.'
        - ' 172.27.'
        - ' 172.28.'
        - ' 172.29.'
        - ' 172.30.'
        - ' 172.31.'
        - ' 127.' # 127.0.0.0/8
        - ' 169.254.' # 169.254.0.0/16
condition: 1 of selection*

False positives (as the rule lists them)

  • Legitimate administration activities

Tags

  • attack.discovery
  • attack.t1018

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_remote_system_discovery.yml

Sources and licences

  • SigmaHQ

    "Macos Remote System Discovery" by Alejandro Ortuno, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/macos/process_creation/proc_creation_macos_remote_system_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: Macos Remote System Discovery",
entity page, dataset version ref-67f776257c56, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/10227522-8429-47e6-a301-f2b2d014e7ad (accessed 2026-11-03).
Underlying source: SigmaHQ rule 10227522-8429-47e6-a301-f2b2d014e7ad, 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.