Extracted

• • Target

    796e1936b00307eb5d0b6af571ca8dfda475be4a4dfaacac4aa72bc1c5741aa6

  • Size

    1.7MB

  • MD5

    d88f42698d2195f61bedb72ce885a758

  • SHA1

    a7854723c51857ab0e958108be18331aa3ff8fe6

  • SHA256

    796e1936b00307eb5d0b6af571ca8dfda475be4a4dfaacac4aa72bc1c5741aa6

  • SHA512

    6be3825bed91188e6729f70fec9ac182ca9ecbdcfef970643665a1ebba9c160cfb68ae3685ce38f455b729c63c8cd2da56bf32881fe0181a4729bfbedc22d752

  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