Extracted

• • Target

    415ecf85cc1e03aa1ec4628e4fb918f3a7bcc698604e47e370d92659894669dc

  • Size

    1.8MB

  • MD5

    62cb54ffe0ba447c2b4eefbefca59ab6

  • SHA1

    f96865aa57c7f17f196aa6f219ee90726dd3962e

  • SHA256

    415ecf85cc1e03aa1ec4628e4fb918f3a7bcc698604e47e370d92659894669dc

  • SHA512

    4dacd5f17d78f7e551c8867cda3cea1fccdb0dead9ee1a45a5f4496fe71521255db67bc2895328cbf1396a01a831f03f99df2cbd4f1c61227150ac1ff35ffbf9

  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