Extracted

• • Target

    36f546aa982aa0d2f26ebfbc3f468387b6c987ba045e9903b174ca052cb8dc31

  • Size

    1.6MB

  • MD5

    50db2b8af977c38ad30d3d0fe8f8837c

  • SHA1

    7b948d2f9781aab32b99c0f0bd5da39db05c67f1

  • SHA256

    36f546aa982aa0d2f26ebfbc3f468387b6c987ba045e9903b174ca052cb8dc31

  • SHA512

    2459794649b75c2c518dd2a830f62ef2459d24b324c9e0437988c7ab6ca19fa7937da5c8a7fb48afd97920773dcf32ad329b691ce780d6d1c7144da8ff5a8340

  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