Extracted

• • Target

    825933063c5be4e41f1931b4c818057cd18a42ab0034225740bfed72a9ed4ef4

  • Size

    1.7MB

  • MD5

    ef942beae72f6d7b660b572327c83e63

  • SHA1

    8a3dbc49f067767eba14991d34eba775bae7c74c

  • SHA256

    825933063c5be4e41f1931b4c818057cd18a42ab0034225740bfed72a9ed4ef4

  • SHA512

    97714e8a60fd09deb535a22a8c3cba190c2a089cb293a22be89117b5c9403266565627d3b8d9055f58019560d6de1db8e1fd615591b40d8eaa042f52f9f849b4

  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