Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    30-05-2022 23:40

General

  • Target

    0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0.exe

  • Size

    1.7MB

  • MD5

    3e397d12e8dc5a6194c6c275977f8bba

  • SHA1

    2aa3297e700208a43cad912c69aa5ff1f9435bce

  • SHA256

    0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0

  • SHA512

    6f0fba2a65073e0e8f526c4bfd0a24ae130a68c3f21b49595afc2bd4fd9c7d9f4661312f356011fae3ee626ffcb2ca364046e7fbc947f90d11719593a2ba9453

Score
10/10

Malware Config

Extracted

Family

buer

C2

https://loddd01.info/

https://loddd02.info/

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Buer Loader 7 IoCs

    Detects Buer loader in memory or disk.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Identifies Wine through registry keys 2 TTPs 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0.exe
    "C:\Users\Admin\AppData\Local\Temp\0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0.exe"
    1⤵
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\ProgramData\UBlockPlugin\plugin.exe
      C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0.exe" ensgJJ
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4188
      • C:\Windows\SysWOW64\secinit.exe
        C:\ProgramData\UBlockPlugin\plugin.exe
        3⤵
          PID:4820
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 220
            4⤵
            • Program crash
            PID:3032
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4820 -ip 4820
      1⤵
        PID:4496

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\UBlockPlugin\plugin.exe

        Filesize

        1.7MB

        MD5

        3e397d12e8dc5a6194c6c275977f8bba

        SHA1

        2aa3297e700208a43cad912c69aa5ff1f9435bce

        SHA256

        0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0

        SHA512

        6f0fba2a65073e0e8f526c4bfd0a24ae130a68c3f21b49595afc2bd4fd9c7d9f4661312f356011fae3ee626ffcb2ca364046e7fbc947f90d11719593a2ba9453

      • C:\ProgramData\UBlockPlugin\plugin.exe

        Filesize

        1.7MB

        MD5

        3e397d12e8dc5a6194c6c275977f8bba

        SHA1

        2aa3297e700208a43cad912c69aa5ff1f9435bce

        SHA256

        0807f543bc8322a5c55739c0a46aa8912feb5d3c8785b36188f9eb9e8b5e6af0

        SHA512

        6f0fba2a65073e0e8f526c4bfd0a24ae130a68c3f21b49595afc2bd4fd9c7d9f4661312f356011fae3ee626ffcb2ca364046e7fbc947f90d11719593a2ba9453

      • memory/4188-140-0x000000003F840000-0x000000003FCA0000-memory.dmp

        Filesize

        4.4MB

      • memory/4188-144-0x000000003F840000-0x000000003FCA0000-memory.dmp

        Filesize

        4.4MB

      • memory/4188-143-0x000000003F840000-0x000000003FCA0000-memory.dmp

        Filesize

        4.4MB

      • memory/4188-142-0x000000003F840000-0x000000003FCA0000-memory.dmp

        Filesize

        4.4MB

      • memory/4188-141-0x0000000077BD0000-0x0000000077D73000-memory.dmp

        Filesize

        1.6MB

      • memory/4448-134-0x000000003FAA0000-0x000000003FF00000-memory.dmp

        Filesize

        4.4MB

      • memory/4448-138-0x000000003FAA0000-0x000000003FF00000-memory.dmp

        Filesize

        4.4MB

      • memory/4448-139-0x0000000077BD0000-0x0000000077D73000-memory.dmp

        Filesize

        1.6MB

      • memory/4448-130-0x000000003FAA0000-0x000000003FF00000-memory.dmp

        Filesize

        4.4MB

      • memory/4448-133-0x000000003FAA0000-0x000000003FF00000-memory.dmp

        Filesize

        4.4MB

      • memory/4448-132-0x000000003FAA0000-0x000000003FF00000-memory.dmp

        Filesize

        4.4MB

      • memory/4448-131-0x0000000077BD0000-0x0000000077D73000-memory.dmp

        Filesize

        1.6MB