Extracted

• • Target

    f2df4c45300e982fc3c0131ad426ea3b55d28e983ec3221f243f4c496ca618b1

  • Size

    1.8MB

  • MD5

    5fcc7f613eb5fe47512efb5c67830712

  • SHA1

    0db872d896a9991aa6703cb0d7d7960fa8c2a0e8

  • SHA256

    f2df4c45300e982fc3c0131ad426ea3b55d28e983ec3221f243f4c496ca618b1

  • SHA512

    a5d4133fe3b8f13dc02eb319403021834ed63595331a8530d0775bc1a6c83a80983fa7a5cf548a47c058263cc8a1a5c0a719df55b9becafa296c1cd95f39a5e2

  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