Extracted

• • Target

    30f5f3d2af768cf4eb2dc9fa7508264caffb8acdc623c38bf72ef6f2d89a9d49

  • Size

    1.9MB

  • MD5

    b707d0f456635a8dab39a90bb561e89f

  • SHA1

    4acf51810471b9a2b567e17b7b8f624f6271ac92

  • SHA256

    30f5f3d2af768cf4eb2dc9fa7508264caffb8acdc623c38bf72ef6f2d89a9d49

  • SHA512

    73ea8547a712594173220dcb5631f86d900f42cacbe1e1e988680753b3cac04a67ef554f282029fce3c3ed8a91a7de794961f60b47c8ea9a4429709da6b38b65

  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