Sigma rule: MacOS Network Service Scanning

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9e0aa765f60a, updated 2026-10-19T00:00:00.000Z.

Rule

Title
MacOS Network Service Scanning
Status
test
Level
low
Author
Alejandro Ortuno, oscd.community
Date
2020-10-21
Modified
2026-10-19
File
rules/macos/process_creation/proc_creation_macos_network_service_scanning.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects enumeration of local or remote network services.

Log source

product
macos
category
process_creation

Detection

selection_netcat:
    Image|endswith:
        - '/nc'
        - '/netcat'
selection_other:
    Image|endswith:
        - '/nmap'
        - '/telnet'
filter_main_nc_listen:
    CommandLine|re: '\s(?:--listen\b|-[46DdknrtuUvz]{0,10}l[46DdknrtuUvz]{0,10})'
condition: (selection_netcat and not 1 of filter_main_nc_*) or selection_other

False positives (as the rule lists them)

  • Legitimate administration activities

Tags

  • attack.discovery
  • attack.t1046

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_network_service_scanning.yml

Sources and licences

  • SigmaHQ

    "MacOS Network Service Scanning" by Alejandro Ortuno, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/macos/process_creation/proc_creation_macos_network_service_scanning.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 Network Service Scanning",
entity page, dataset version ref-9e0aa765f60a, updated 2026-10-19T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/84bae5d4-b518-4ae0-b331-6d4afd34d00f (accessed 2026-11-03).
Underlying source: SigmaHQ rule 84bae5d4-b518-4ae0-b331-6d4afd34d00f, 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.