Extracted

• • Target

    3c1a487926e726fda53c8d5e2a6f455fb6a7a5de3758925d9250c95c17b19203

  • Size

    1.8MB

  • MD5

    28623b3264e04f4b160425d0c10f4a54

  • SHA1

    d8d8b1f79204ec37e62a8cda2778808c91de8d98

  • SHA256

    3c1a487926e726fda53c8d5e2a6f455fb6a7a5de3758925d9250c95c17b19203

  • SHA512

    0047420a38ab935eae6781e1e07d6f558841cb940cd1b337d30da20b9b1b620ef54218d564d2eb23de6d6b37b5ba4db8d63cacf5b52916cf96867da9da8a3d82

  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