Analysis

  • max time kernel
    133s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2024, 09:53

General

  • Target

    3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm

  • Size

    21KB

  • MD5

    435309c2bfbaa26ec97f7351685c4cab

  • SHA1

    107b4cf4aee45673e7ee3f4b3e2f248bdc21a21a

  • SHA256

    3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172

  • SHA512

    43694143ec2247cbf0af2d60826fac3c91fba56e1317d070d1e8681aba7db578b7fb4c7a7982a24f7d2488dbdbfc4e643eb2ef6cc4cc5f613d89835274b4229d

  • SSDEEP

    384:fhuAi/NjZS8EibbwBlwegASYrLb5CzgObff9kC+xbX77NWu:ftsNxzXQFCBn9kC+xbL71

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://beetle-j.jp/wp-admin/ErM4mW05tdj/

xlm40.dropper

https://brutobrasil.com.br/pdf/toO18cIP3/

xlm40.dropper

http://e3technology.in/2checkout_integration_php/rDcr1Wl90WWA9M/

Signatures

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll
      2⤵
      • Process spawned unexpected child process
      • System Location Discovery: System Language Discovery
      PID:4396

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\rfs.dll

    Filesize

    114B

    MD5

    e89f75f918dbdcee28604d4e09dd71d7

    SHA1

    f9d9055e9878723a12063b47d4a1a5f58c3eb1e9

    SHA256

    6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023

    SHA512

    8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

  • memory/1352-13-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-3-0x00007FF9BC990000-0x00007FF9BC9A0000-memory.dmp

    Filesize

    64KB

  • memory/1352-0-0x00007FF9BC990000-0x00007FF9BC9A0000-memory.dmp

    Filesize

    64KB

  • memory/1352-4-0x00007FF9BC990000-0x00007FF9BC9A0000-memory.dmp

    Filesize

    64KB

  • memory/1352-7-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-8-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-6-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-5-0x00007FF9BC990000-0x00007FF9BC9A0000-memory.dmp

    Filesize

    64KB

  • memory/1352-9-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-10-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-14-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-2-0x00007FF9BC990000-0x00007FF9BC9A0000-memory.dmp

    Filesize

    64KB

  • memory/1352-1-0x00007FF9FC9AD000-0x00007FF9FC9AE000-memory.dmp

    Filesize

    4KB

  • memory/1352-15-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-19-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-17-0x00007FF9BA2D0000-0x00007FF9BA2E0000-memory.dmp

    Filesize

    64KB

  • memory/1352-21-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-20-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-12-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-18-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-11-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-37-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-16-0x00007FF9BA2D0000-0x00007FF9BA2E0000-memory.dmp

    Filesize

    64KB

  • memory/1352-43-0x00007FF9FC9AD000-0x00007FF9FC9AE000-memory.dmp

    Filesize

    4KB

  • memory/1352-44-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB

  • memory/1352-45-0x00007FF9FC910000-0x00007FF9FCB05000-memory.dmp

    Filesize

    2.0MB