Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2022, 19:33

General

  • Target

    doc_0911.xls

  • Size

    91KB

  • MD5

    a134f958b8f28081d5857abc32dab8d3

  • SHA1

    cc4e5f5f8b9988c175b7c578c2ab225522956101

  • SHA256

    afe3d78330690e536178b7ccb888360b5ebeaf73223319978ca2c84af0175a51

  • SHA512

    d1928bdc459144d4fe9155bba6dcdf88787233ac83a1f1e18749526fc1117acdc743bce880877d862d8f43ca4d3cc16346bb1c3a2fc2700e4f687faee77f9c46

  • SSDEEP

    1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZwEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgJ

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

xlm40.dropper

http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/kFB/

xlm40.dropper

http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/

Signatures

  • Process spawned unexpected child process 4 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 13 IoCs
  • Suspicious use of WriteProcessMemory 8 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\doc_0911.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4244
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:2236
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:116
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:4272
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3668

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/4244-132-0x00007FF862050000-0x00007FF862060000-memory.dmp

          Filesize

          64KB

        • memory/4244-133-0x00007FF862050000-0x00007FF862060000-memory.dmp

          Filesize

          64KB

        • memory/4244-134-0x00007FF862050000-0x00007FF862060000-memory.dmp

          Filesize

          64KB

        • memory/4244-135-0x00007FF862050000-0x00007FF862060000-memory.dmp

          Filesize

          64KB

        • memory/4244-136-0x00007FF862050000-0x00007FF862060000-memory.dmp

          Filesize

          64KB

        • memory/4244-137-0x00007FF85FF60000-0x00007FF85FF70000-memory.dmp

          Filesize

          64KB

        • memory/4244-138-0x00007FF85FF60000-0x00007FF85FF70000-memory.dmp

          Filesize

          64KB