General

  • Target
    SECURE BYTE GUI.exe
  • Size 9.7MB
  • Sample261016-w5thasbb48
  • SHA256 90c2655130733bc1680627754c107c9d8cfd033df0ff40613868e027125b2981
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • m7mnga-38338.portmap.host:38338

Mutex
  • JigXrL7925vRQAGo

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target
      SECURE BYTE GUI.exe
    • Size 9.7MB
    • SHA256 90c2655130733bc1680627754c107c9d8cfd033df0ff40613868e027125b2981
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

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

    • Manipulates Digital Signatures

      Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to make their binary seem validly signed.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes a file named after a Windows system binary

      The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Packer/crypter tool: SecureByte

      SecureByte: an open-source packer/crypter that encrypts payloads and produces obfuscated executables.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks