General

  • Target
    RblxExecutor.exe
  • Size 1.6MB
  • Sample240522-xbe89acd77
  • SHA256 e9397b42b5c3f7770b873a76355bd59cbe097f30dc9b9349e9787832bbe9767a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

C2
  • 185.196.8.135:7000

Attributes
  • install_file

    USB.exe

Targets

    • Target
      RblxExecutor.exe
    • Size 1.6MB
    • SHA256 e9397b42b5c3f7770b873a76355bd59cbe097f30dc9b9349e9787832bbe9767a
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Looks for VirtualBox Guest Additions in registry

    • Looks for VirtualBox drivers on disk

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Looks for VMWare drivers on disk

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks