General

  • Target
    file.exe
  • Size 4.2MB
  • Sample241123-bnyepstqds
  • SHA256 e5f29348bc07584a7e370c5adafa376137382bfbfd5b5ee042e5ca27d013adf0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cryptbot

C2
  • http://home.fvtekk5pn.top/LCXOUUtXgrKhKDLYSbzW17

Targets

    • Target
      file.exe
    • Size 4.2MB
    • SHA256 e5f29348bc07584a7e370c5adafa376137382bfbfd5b5ee042e5ca27d013adf0
    • MD5 SHA1 SHA512 SSDEEP
    • CryptBot

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Cryptbot family

    • Detects CryptBot payload

      CryptBot is a C++ stealer distributed widely in bundle with other software.

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

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks