Extracted

• • Target

    cf8aeb8de311480bf57c259e29b39ce799304dbd3532e93b93907b1d0797ac24

  • Size

    1.6MB

  • MD5

    7a4a353f71dca138e5cfb11022a8341a

  • SHA1

    3b30f19261c8b2b8ba9873486801811dd0afa47e

  • SHA256

    cf8aeb8de311480bf57c259e29b39ce799304dbd3532e93b93907b1d0797ac24

  • SHA512

    1f2bbb338fd39474664a82e51cc34a86c815da3262e25f3177c6b631b1cc7de796ea34bbaa6ee5eea1f667b9955c5ee66fc4062b20b5806dc9e43fecb7d74d1a

  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