General

  • Target
    https://cdn.discordapp.com/attachments/1219089729258262558/1219094325187711046/vidos.exe?ex=660a0d10&is=65f79810&hm=31d0e496672ceac39896e1e8f4f3f22744b0539c0a0fbe2ff5c68accf7acdd65&
  • Sample240318-ceernsee71

Malware Config

Extracted

Family
  • xworm

C2
  • ground-gsm.gl.at.ply.gg:17265

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    WindowsDfender.exe

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • authapi-41985.portmap.host:41985

Mutex
  • 50fd280e-bda2-413a-9ebd-86236f4b0beb

Attributes
  • encryption_key

    E429F24E279E8B25742D0F5347151B0F90D031CA

  • install_name

    system.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    system

  • subdirectory

    SubDir

Targets

    • Target
      https://cdn.discordapp.com/attachments/1219089729258262558/1219094325187711046/vidos.exe?ex=660a0d10&is=65f79810&hm=31d0e496672ceac39896e1e8f4f3f22744b0539c0a0fbe2ff5c68accf7acdd65&
    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • An obfuscated cmd.exe command-line is typically used to evade detection.

MITRE ATT&CK Enterprise v15

Tasks