General

  • Target
    rfdnmghdfngdf.exe
  • Size 25.3MB
  • Sample260319-2mw4csfv2w
  • SHA256 4077650d26e922bd7751ad46759b96612bde298e66fbb6235dd08da9280d2370
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.6.6

Botnet
  • CS2

C2
  • 94.154.32.93:4782

Mutex
  • e3d8d84c-6e87-40fa-bdd7-83742a6d0e43

Attributes
  • encryption_key

    FF792E74745C791376163915B18D340D305DEF87

  • install_name

    svhost.exe

  • key_salt

    5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382

  • reconnect_delay

    3000

  • startup_key

    Medal.exe

  • subdirectory

    System Files

Extracted

Family
  • xworm

Version
  • XWorm V6.5 by c3lestial.fun

C2
  • 94.154.32.93:7000

Mutex
  • DpxNz1AvuPwVddIT

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svhost.exe

aes.plain

Targets

    • Target
      rfdnmghdfngdf.exe
    • Size 25.3MB
    • SHA256 4077650d26e922bd7751ad46759b96612bde298e66fbb6235dd08da9280d2370
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Customer Loader

      Customer Loader is a downloader written in C#.

    • Customerloader family

    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar 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

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks