Extracted

• • Target

    ec5dde3e68cf7ed672be82433da49a7c44bb2c109956b2b29161e0b3f34b025e

  • Size

    1.6MB

  • MD5

    4f6928ac042fe087533e8d7f4fbc4b74

  • SHA1

    59cb8e3ed172b41351ae9a8a6e15cd7efdc0250c

  • SHA256

    ec5dde3e68cf7ed672be82433da49a7c44bb2c109956b2b29161e0b3f34b025e

  • SHA512

    efcf031b00d16a2fd406cbdc35ca8a1bcc6679fcd72c169e56c6231074fb7e74fe21ffb586970c48ad57090412c24caa15890f7bad44654c7f2deb39772401a9

  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