General

  • Target
    Output (1).exe
  • Size 836KB
  • Sample260909-1apyva1dqe
  • SHA256 4329c71459188edbeab68e6dea901669591ff80cb24808a67b64399ea9e8e4e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • XWorm V5.6

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    RuntimeBroker.exe

Targets

    • Target
      Output (1).exe
    • Size 836KB
    • SHA256 4329c71459188edbeab68e6dea901669591ff80cb24808a67b64399ea9e8e4e7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Command and Scripting Interpreter: PowerShell

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

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Adds Run key to start application

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks