Extracted

• • Target

    f496e1cd3b7c86e1d1f3e5ae4ede6e64c7e44e127499ba9384eb57a3191c32b8

  • Size

    2.0MB

  • MD5

    d3d83d82b0fc9300b736cbe55fb82445

  • SHA1

    b4690a316a6469738f4d38445b37b34a0e686742

  • SHA256

    f496e1cd3b7c86e1d1f3e5ae4ede6e64c7e44e127499ba9384eb57a3191c32b8

  • SHA512

    19c82cd3114ebb420d07d0926aafbb482a450cc2b31b50cdd3cac23a4a45f16686f893610ba4bc942ef902c9478afa13ee5b91e935ced9ee92141a41cfea4942

  Score

  10^/10

  buerevasionloaderpersistence

  • Buer

    Buer is a new modular loader first seen in August 2019.

    loaderbuer

  • Modifies WinLogon for persistence

    persistence

  • Buer Loader

    Detects Buer loader in memory or disk.

    loader

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

    evasion

  • Executes dropped EXE

  • Checks BIOS information in registry

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

  • Deletes itself

  • Identifies Wine through registry keys

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

    evasion

  • Loads dropped DLL

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1behavioral2