Overview

overview

10

Static

static

8

jfbxwvbm.xlsm

windows7_x64

10

jfbxwvbm.xlsm

windows10-2004_x64

10

Analysis

  • max time kernel
    160s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220331-en
  • submitted
    04-04-2022 03:32

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General

  • Target

    jfbxwvbm.xlsm

  • Size

    102KB

  • MD5

    e01658f40196c8810a4b654d10212ade

  • SHA1

    caed09b776174509351dfe57e87325cacee7c69d

  • SHA256

    0d93a4f12d6e52dd86f8194dc522bdf7b6c4724898e929e12943c15cef4f3aa9

  • SHA512

    5e502a8d00aa91155e4725323b9f7b073537565a1b185e8a8cce12259b6c7300aebabd8ef776280cecb85b451999742a5bde4ad1a460f12fec0d9c7e7158a666

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://singsamut.ac.th/00-----26phj/ws1iGhQ/ws1iGhQ/

Signatures

  • Process spawned unexpected child process 1 IoCs

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

  • 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 SetWindowsHookEx 14 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\jfbxwvbm.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3204
    • C:\Windows\SysWow64\rundll32.exe
      C:\Windows\SysWow64\rundll32.exe ..\bestb.ocx,D"&"l"&"l"&"R"&"eg"&"i"&"s"&"t"&"e"&"rS"&"e"&"rver
      2⤵
      • Process spawned unexpected child process
      PID:456

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\bestb.ocx
    Filesize

    4KB

    MD5

    a53bdb94c2e74170aff60c9c21beaca1

    SHA1

    60718d07daaca89728920ea7ca494622c748ffb5

    SHA256

    dffd3673a67611d35f57a7ebfb422074f257892c42d85c556215762762b5c003

    SHA512

    3a9b43407d8e565e5b872a87ddc637ff2a7cecd304d69125383b89744f5bd2f297462b4bcdd75a45b30d6f4dd1e3103be00c59d5d668eab5889e0499f6bfd9a2

    Download Submit

  • memory/3204-124-0x00007FFCD8910000-0x00007FFCD8920000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3204-125-0x00007FFCD8910000-0x00007FFCD8920000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3204-126-0x00007FFCD8910000-0x00007FFCD8920000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3204-127-0x00007FFCD8910000-0x00007FFCD8920000-memory.dmp

    Filesize

    64KB

    Download

  • memory/3204-128-0x00007FFCD8910000-0x00007FFCD8920000-memory.dmp

    Filesize

    64KB

    Download