Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    03/01/2023, 03:26

General

  • Target

    5a63ab6f7ef4d61c6d67fddff5883778b3235ef83b36bfced892d6dbc1a7416e.xls

  • Size

    255KB

  • MD5

    c53b62a9af12cf189afd7f48d36041d5

  • SHA1

    3cc43c03d5b634409b9cd28d4eeec6e7f8a19584

  • SHA256

    5a63ab6f7ef4d61c6d67fddff5883778b3235ef83b36bfced892d6dbc1a7416e

  • SHA512

    bf68da6412d80607151832b5aecd96f55ef1555daf1718e82f70560d7210e753e1339a34a81b503e79f7de595f14be1c36e10d292080d94f03705b6321c53941

  • SSDEEP

    6144:6Kpb8rGYrMPe3q7Q0XV5xtuEsi8/dgRNiwrfx9rNFMMrttRzV5Dz3UxqC8LUcSz:FNbDjP9XH5XIqZLnSz

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

https://files.encendercomunicacion.com/jardinesdelpilar/7tTka2RzzAH/

xlm40.dropper

http://argojeans.com/FxCredit/tGNivisLKJet7a/

xlm40.dropper

http://blacksmithbooks.com/blog/yinA3nT/

xlm40.dropper

https://annunziato.com.br/swf/5FJ0eeAsKYPctsq/

Signatures

  • Process spawned unexpected child process 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\5a63ab6f7ef4d61c6d67fddff5883778b3235ef83b36bfced892d6dbc1a7416e.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1112
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:2008
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1576
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:904
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1252

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1112-54-0x000000002FEA1000-0x000000002FEA4000-memory.dmp

    Filesize

    12KB

  • memory/1112-55-0x00000000717B1000-0x00000000717B3000-memory.dmp

    Filesize

    8KB

  • memory/1112-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1112-57-0x000000007279D000-0x00000000727A8000-memory.dmp

    Filesize

    44KB

  • memory/1112-58-0x0000000075881000-0x0000000075883000-memory.dmp

    Filesize

    8KB

  • memory/1112-65-0x000000007279D000-0x00000000727A8000-memory.dmp

    Filesize

    44KB