General

  • Target
    Bloxstrap-v2.5.4.exe
  • Size 7.6MB
  • Sample240404-3syptaef93
  • SHA256 b2ac1e407ed3ecd7c7faa6de929a68fb51145662cf793c40b69eb59295bba6bc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      Bloxstrap-v2.5.4.exe
    • Size 7.6MB
    • SHA256 b2ac1e407ed3ecd7c7faa6de929a68fb51145662cf793c40b69eb59295bba6bc
    • MD5 SHA1 SHA512 SSDEEP
    • Downloads MZ/PE file

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • Checks installed software on the system

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

    • Checks system information in the registry

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

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks