General

  • Target

    https://cdn.discordapp.com/attachments/1259566254663008356/1263793554636144671/Stellar.exe?ex=672a91b7&is=67294037&hm=9a9dd2f12419643bce181f6db7ff132f0f22f0fb134f06517bac891660eb9dfb&

  • Sample

    241105-cdrpva1nhw

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/LsuynkUz

Targets

    • Target

      https://cdn.discordapp.com/attachments/1259566254663008356/1263793554636144671/Stellar.exe?ex=672a91b7&is=67294037&hm=9a9dd2f12419643bce181f6db7ff132f0f22f0fb134f06517bac891660eb9dfb&

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks