Extracted

• • Target

    99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22

  • Size

    1.6MB

  • MD5

    5b89932d8f9f7806c66141203042ea1b

  • SHA1

    dd38e9b111a3581217c8aa9ccc80d4d838a20ea7

  • SHA256

    99ecaff6fefedf3b7b7d6d0dba4d15c55ca1a7d57a19e04c38908f02a1f9ca22

  • SHA512

    69b5d0191a294fba020d4e354b37c13d4d39c65904013be636c7b9b02bec29a7f7027446d5f513db32a31c75f01955ba97e01927660d936e6878101a732797bc

  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.

  • Identifies Wine through registry keys

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    evasion

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  behavioral1behavioral2