General

  • Target
    https://gofile.io/d/js8e8K
  • Sample240401-l6vrmsbe8v

Malware Config

Extracted

Family
  • xworm

C2
  • 185.216.70.22:7000

  • 127.0.0.1:7000

  • 185.239.237.162:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    GoogleUpdateCore.exe

Targets

    • Target
      https://gofile.io/d/js8e8K
    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • 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 cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks