Extracted

• • Target

    44ecc8efe07d1908dad842bd31f0aa15bb8810401829bc0b3383e2c0d9750bd2

  • Size

    1.8MB

  • MD5

    12879fe44a82eb3491d7e04ed821a740

  • SHA1

    8984616aade39197467c89cb08b1b42345acbed4

  • SHA256

    44ecc8efe07d1908dad842bd31f0aa15bb8810401829bc0b3383e2c0d9750bd2

  • SHA512

    8110746c6db6169a836d5f8c2f231a6b862cf878b9c1af5625770cb050fa86b2efa64614313783deb3d26f6533f90ed284a158b9f97f139cd920c715a07cb6b6

  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