MacOS Network Service Scanning

 1title: MacOS Network Service Scanning
 2id: 84bae5d4-b518-4ae0-b331-6d4afd34d00f
 3status: test
 4description: Detects enumeration of local or remote network services.
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md
 7author: Alejandro Ortuno, oscd.community
 8date: 2020-10-21
 9modified: 2026-10-19
10tags:
11    - attack.discovery
12    - attack.t1046
13logsource:
14    category: process_creation
15    product: macos
16detection:
17    selection_netcat:
18        Image|endswith:
19            - '/nc'
20            - '/netcat'
21    selection_other:
22        Image|endswith:
23            - '/nmap'
24            - '/telnet'
25    filter_main_nc_listen:
26        CommandLine|re: '\s(?:--listen\b|-[46DdknrtuUvz]{0,10}l[46DdknrtuUvz]{0,10})'
27    condition: (selection_netcat and not 1 of filter_main_nc_*) or selection_other
28falsepositives:
29    - Legitimate administration activities
30level: low