General

  • Target

    XClient.exe

  • Size

    81KB

  • Sample

    240713-skx37swbmn

  • MD5

    ba45e0438d7e48f1ae33705c71b070df

  • SHA1

    0d5ed53e0ad72cd60c98a3c180b47cc1982a2039

  • SHA256

    b103c76237e5917fe8d9b3dbcc62113626cc67ff3f75eab3ae49b7cb698f7629

  • SHA512

    1830f0d629181c3287e9c09fbdfd4afbbae098138cb1b368580417f16a8ad481b268686804d99e724243843f6bf8f0ac3e0b11ced129c7e0b70e82de16d9ae92

  • SSDEEP

    1536:dUXxbCZlUs9HKcLbeKeD/i6z1cYcta9muJDlbb15qrHi6TxI2MjOWwPLBq9m:2XxbCZlUs9HKQ7eD/xzpwa9nxb15qWD2

Malware Config

Extracted

Family

xworm

Version

3.1

C2

girl-tries.gl.at.ply.gg:7131

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Targets

    • Target

      XClient.exe

    • Size

      81KB

    • MD5

      ba45e0438d7e48f1ae33705c71b070df

    • SHA1

      0d5ed53e0ad72cd60c98a3c180b47cc1982a2039

    • SHA256

      b103c76237e5917fe8d9b3dbcc62113626cc67ff3f75eab3ae49b7cb698f7629

    • SHA512

      1830f0d629181c3287e9c09fbdfd4afbbae098138cb1b368580417f16a8ad481b268686804d99e724243843f6bf8f0ac3e0b11ced129c7e0b70e82de16d9ae92

    • SSDEEP

      1536:dUXxbCZlUs9HKcLbeKeD/i6z1cYcta9muJDlbb15qrHi6TxI2MjOWwPLBq9m:2XxbCZlUs9HKQ7eD/xzpwa9nxb15qWD2

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • Modifies visibility of file extensions in Explorer

    • Modifies visiblity of hidden/system files in Explorer

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • 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.

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Sets desktop wallpaper using registry

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks