General

  • Target

    Tzx.exe

  • Size

    7.4MB

  • Sample

    250116-wh19masnfj

  • MD5

    31c66535e6f683fca2a2839619d41258

  • SHA1

    7c581aa9d44e8bd343c0623cc97815678e26159a

  • SHA256

    85020f1c11cdf41e52e4cb224c1685a219dee84670a2b75c54ec72e73b6c19b7

  • SHA512

    94db24232f760342e397927a0efec636278bbc49338f5ad635f70c22af0fb9d609f6bc3fa08a13b399bbe33dc746ffb433f5af9043403efed769a7415eeb02e8

  • SSDEEP

    196608:7J0cDxzLjv+bhqNVoBKUh8mz4Iv9PPv1DVWhT:iiBL+9qz8/b4IRv3WhT

Malware Config

Extracted

Family

xworm

C2

trip-thesaurus.gl.at.ply.gg:16715

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Targets

    • Target

      Tzx.exe

    • Size

      7.4MB

    • MD5

      31c66535e6f683fca2a2839619d41258

    • SHA1

      7c581aa9d44e8bd343c0623cc97815678e26159a

    • SHA256

      85020f1c11cdf41e52e4cb224c1685a219dee84670a2b75c54ec72e73b6c19b7

    • SHA512

      94db24232f760342e397927a0efec636278bbc49338f5ad635f70c22af0fb9d609f6bc3fa08a13b399bbe33dc746ffb433f5af9043403efed769a7415eeb02e8

    • SSDEEP

      196608:7J0cDxzLjv+bhqNVoBKUh8mz4Iv9PPv1DVWhT:iiBL+9qz8/b4IRv3WhT

    • 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

    • 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.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • 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.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks