General

  • Target

    downloader.exe

  • Size

    30.1MB

  • Sample

    241202-nwx55asncx

  • MD5

    aa25267959528f3d0f03d013df095d79

  • SHA1

    55f560ceb4bb7c27811a30eaeb78343bbbb21490

  • SHA256

    be6ff6463e88763b1d847aef8df8fda3b2c244ade605a84047e5be5a05c6cb9a

  • SHA512

    a7b3f46bda500c1c3af6726fcbb1e45d0d0cf971ec71313071df0cf7bfc0a79d392f979ae5f996204700e9ace7373c6be37722c0ab4e534f3e1e8fde3377b1db

  • SSDEEP

    393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7a4mo+AJCcLKAf:R9w9wD5xUe4bJCcn

Malware Config

Extracted

Family

xworm

Version

3.1

C2

83.38.24.1:1603

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Targets

    • Target

      downloader.exe

    • Size

      30.1MB

    • MD5

      aa25267959528f3d0f03d013df095d79

    • SHA1

      55f560ceb4bb7c27811a30eaeb78343bbbb21490

    • SHA256

      be6ff6463e88763b1d847aef8df8fda3b2c244ade605a84047e5be5a05c6cb9a

    • SHA512

      a7b3f46bda500c1c3af6726fcbb1e45d0d0cf971ec71313071df0cf7bfc0a79d392f979ae5f996204700e9ace7373c6be37722c0ab4e534f3e1e8fde3377b1db

    • SSDEEP

      393216:R8oimu7izBxR3QRzhzvQ99Sq8lu0q5tDJKoWSxJGBL7a4mo+AJCcLKAf:R9w9wD5xUe4bJCcn

    • 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.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks