Resubmissions

05-08-2024 20:52

240805-znsffsxhrj 10

05-08-2024 18:48

240805-xf4gmsvdpm 10

05-08-2024 18:34

240805-w7xbzavbjn 10

General

  • Target

    xdwd.exe

  • Size

    80KB

  • Sample

    240805-w7xbzavbjn

  • MD5

    3ade831c97437e1846fbf4916c3294cd

  • SHA1

    54dbe45ba91a1a554c8cd807d2b55d50b4e8e4aa

  • SHA256

    d08fe746864d0cd1878ae16004cb6e598ccf59b15a36110daa1fbd870a86718d

  • SHA512

    7b684c6c4287bb5fdc5059a82b3599f13936417288cbb76cdbcfa100be4edac744790b8b364bc6184be3a34544d0df9c0b2ed7b61b7c5be0c36a4b3e91c9e5f7

  • SSDEEP

    1536:mA8z0y19O6edHYBW8j6bZIW+MjM0aK6jOeuNDIEjh:mF39qd4b6b6Wg0OOeuyEN

Malware Config

Extracted

Family

xworm

Version

3.1

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

  • pastebin_url

    https://pastebin.com/raw/gf3CpGLZ

Targets

    • Target

      xdwd.exe

    • Size

      80KB

    • MD5

      3ade831c97437e1846fbf4916c3294cd

    • SHA1

      54dbe45ba91a1a554c8cd807d2b55d50b4e8e4aa

    • SHA256

      d08fe746864d0cd1878ae16004cb6e598ccf59b15a36110daa1fbd870a86718d

    • SHA512

      7b684c6c4287bb5fdc5059a82b3599f13936417288cbb76cdbcfa100be4edac744790b8b364bc6184be3a34544d0df9c0b2ed7b61b7c5be0c36a4b3e91c9e5f7

    • SSDEEP

      1536:mA8z0y19O6edHYBW8j6bZIW+MjM0aK6jOeuNDIEjh:mF39qd4b6b6Wg0OOeuyEN

    • 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

    • UAC bypass

    • XenArmor Suite

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

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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.

    • Disables Task Manager via registry modification

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Drops startup file

    • 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.

    • 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.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks