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Analysis

  • max time kernel
    192s
  • max time network
    201s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/02/2023, 02:21

General

  • Target

    5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls

  • Size

    92KB

  • MD5

    c8d86480cae889d55896e2642369a5f1

  • SHA1

    5912e9a715533d5b9110daab4dbafe49236c8891

  • SHA256

    5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946

  • SHA512

    8b7182cdd30b1a95412bd847c30ff32e2493c5c445a0fcea12ce5801db7b3657a5230b328db66b44994c195862ffd7187acd972d771f8182e54b750563ef7714

  • SSDEEP

    1536:/Vk3hOdsylKlgxopeiBNhZFGzE+cL2kdApbCXuZH4gb4CEn9J4ZKnQxW:tk3hOdsylKlgxopeiBNhZFGzE+cL2kdH

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 14 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\5ffa4cb3f7db82c5db94ff5a288f132602383e285c9f110ba3b2eae848b2e946.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4632
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:2684
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:704
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:3532
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx
      2⤵
      • Process spawned unexpected child process
      PID:2860

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/4632-132-0x00007FF9F1110000-0x00007FF9F1120000-memory.dmp

    Filesize

    64KB

  • memory/4632-133-0x00007FF9F1110000-0x00007FF9F1120000-memory.dmp

    Filesize

    64KB

  • memory/4632-134-0x00007FF9F1110000-0x00007FF9F1120000-memory.dmp

    Filesize

    64KB

  • memory/4632-135-0x00007FF9F1110000-0x00007FF9F1120000-memory.dmp

    Filesize

    64KB

  • memory/4632-136-0x00007FF9F1110000-0x00007FF9F1120000-memory.dmp

    Filesize

    64KB

  • memory/4632-137-0x00007FF9EEB20000-0x00007FF9EEB30000-memory.dmp

    Filesize

    64KB

  • memory/4632-138-0x00007FF9EEB20000-0x00007FF9EEB30000-memory.dmp

    Filesize

    64KB