Extracted

• • Target

    2d0454cf4f68e1d60a1a0fcc15092f2d4948ea0b849003ec1950726ce66e89db

  • Size

    1.7MB

  • MD5

    4f73059dff7c802ba913d7829486ea61

  • SHA1

    e9ea29c2ca2cdc156b624c8001eeb62d508958b7

  • SHA256

    2d0454cf4f68e1d60a1a0fcc15092f2d4948ea0b849003ec1950726ce66e89db

  • SHA512

    a15ee3950e35af46dcbe4751a493d3f07f0194b04057ee2ab1687679f5a0a44672b0efe6845faa3315a79146f5e75390f0e11bfa739dabc048f9e710ba4902ce

  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