Emerging Threatcriticaltest

Winnti Malware HK University Campaign

Detects specific process characteristics of Winnti malware noticed in Dec/Jan 2020 in a campaign against Honk Kong universities

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Launch

Florian Roth (Nextron Systems), Markus NeisCreated Sat Feb 01Updated Sat Nov 273121461b-5aa0-4a41-b910-66d25524edbb2020

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:
    selection1:
        ParentImage|contains:
            - 'C:\Windows\Temp'
            - '\hpqhvind.exe'
        Image|startswith: 'C:\ProgramData\DRM'
    selection2:
        ParentImage|startswith: 'C:\ProgramData\DRM'
        Image|endswith: '\wmplayer.exe'
    selection3:
        ParentImage|endswith: '\Test.exe'
        Image|endswith: '\wmplayer.exe'
    selection4:
        Image: 'C:\ProgramData\DRM\CLR\CLR.exe'
    selection5:
        ParentImage|startswith: 'C:\ProgramData\DRM\Windows'
        Image|endswith: '\SearchFilterHost.exe'
    condition: 1 of selection*