Extracted

• • Target

    0a063bb3197ef0ac5a791d0eb27f520091886037c12a0b3654f7c7b68381d72d

  • Size

    1.8MB

  • MD5

    adf78598e169ce6d27a36eac18206935

  • SHA1

    ade6bd5e962fbaa0c35062863c14ddc371d64ba7

  • SHA256

    0a063bb3197ef0ac5a791d0eb27f520091886037c12a0b3654f7c7b68381d72d

  • SHA512

    c90c747f5b6d756884746dfcfb347a45e71382b2f25f610700e7490839a920bf24741bb7e6f832abd67ded3aa89bbb935c38835b705b5d6b5df28bc71957c627

  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