Detectioninformationaltest

Macos Remote System Discovery

Detects the enumeration of other remote systems.

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Launch
Alejandro Ortuno, oscd.communityCreated Thu Oct 22Updated Sat Nov 2710227522-8429-47e6-a301-f2b2d014e7admacos
Log Source
macOSProcess Creation
ProductmacOS← raw: macos
CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic
Detection Logic2 selectors
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

Legitimate administration activities

Rule Metadata
Rule ID
10227522-8429-47e6-a301-f2b2d014e7ad
Status
test
Level
informational
Type
Detection
Created
Thu Oct 22
Modified
Sat Nov 27
Path
rules/macos/process_creation/proc_creation_macos_remote_system_discovery.yml
Raw Tags
attack.discoveryattack.t1018
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