Detectionmediumtest

Suspicious Installer Package Child Process

Detects the execution of suspicious child processes from macOS installer package parent process. This includes osascript, JXA, curl and wget amongst other interpreters

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Launch

Sohan G (D4rkCiph3r)Created Sat Feb 18e0cfaecd-602d-41af-988d-f6ccebb2af26macos

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:
    selection_installer:
        ParentImage|endswith:
            - '/package_script_service'
            - '/installer'
        Image|endswith:
            - '/sh'
            - '/bash'
            - '/dash'
            - '/python'
            - '/ruby'
            - '/perl'
            - '/php'
            - '/javascript'
            - '/osascript'
            - '/tclsh'
            - '/curl'
            - '/wget'
        CommandLine|contains:
            - 'preinstall'
            - 'postinstall'
    condition: selection_installer