General

  • Target

    https://github.com/orangegrouptech/Biohazards-from-orangegrouptech/raw/refs/heads/master/Ransomware/Winlocker.VB6.Blacksod/WinlockerVB6Blacksod.exe

  • Sample

    250104-wap7dszmcv

Malware Config

Targets

    • Target

      https://github.com/orangegrouptech/Biohazards-from-orangegrouptech/raw/refs/heads/master/Ransomware/Winlocker.VB6.Blacksod/WinlockerVB6Blacksod.exe

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Badrabbit family

    • Modifies WinLogon for persistence

    • Modifies visibility of file extensions in Explorer

    • UAC bypass

    • Renames multiple (75) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Blocklisted process makes network request

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks