Emerging Threatcriticaltest

Lazarus Group Activity

Detects different process execution behaviors as described in various threat reports on Lazarus group activity

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Florian Roth (Nextron Systems), waggaCreated Wed Dec 23Updated Fri Mar 1024c4d154-05a4-4b99-b57d-9b977472443a2020

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

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_generic:
        CommandLine|contains:
            - 'reg.exe save hklm\sam %temp%\~reg_sam.save'
            - '1q2w3e4r@#$@#$@#$'
            - ' -hp1q2w3e4 '
            - '.dat data03 10000 -p '
    selection_netstat:
        CommandLine|contains|all:
            - 'netstat -aon | find '
            - 'ESTA'
            - ' > %temp%\~'
    # Network share discovery
    selection_network_discovery:
        CommandLine|contains|all:
            - '.255 10 C:\ProgramData\IBM\'
            - '.DAT'
    selection_persistence:
        CommandLine|contains|all:
            - ' /c '
            - ' -p 0x'
        CommandLine|contains:
            - 'C:\ProgramData\'
            - 'C:\RECYCLER\'
    selection_rundll32:
        CommandLine|contains|all:
            - 'rundll32 '
            - 'C:\ProgramData\'
        CommandLine|contains:
            - '.bin,'
            - '.tmp,'
            - '.dat,'
            - '.io,'
            - '.ini,'
            - '.db,'
    condition: 1 of selection_*