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Analysis

  • max time kernel
    185s
  • max time network
    173s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    11/02/2023, 02:22

General

  • Target

    a9c2f27b0666affc9f3cb78b5d662606cd0cb1be1c1dafd2c260ae229953b7c0.xls

  • Size

    218KB

  • MD5

    8fbaa780c9336ea8887d8949ed114799

  • SHA1

    726c148c897365be9f482d0dc1fcad6929461acc

  • SHA256

    a9c2f27b0666affc9f3cb78b5d662606cd0cb1be1c1dafd2c260ae229953b7c0

  • SHA512

    53dd882d04aaeded21d57856e9940ad71ce71c409c45d27a8ece5b72e13f5f52386bef984c83edcea62df772ecfba59fcf7729bdb944a4a3d209ba20430353d5

  • SSDEEP

    6144:ik3hOdsylKlgxopeiBNhZF+E+W2kdALyY+TAQXTHGUMEyP5p6f5jQmqi:PbGUMVWlbqi

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://ftp.agir-santeinternationale.com/doctors/KAacngW97n4ApzVBDdGy/

xlm40.dropper

http://www.vinyz.com/admin3693/BDFFgAZ6zBRumcUSG/

xlm40.dropper

http://ly.yjlianyi.top/wp-admin/NRAdJ/

xlm40.dropper

http://www.muyehuayi.com/cmp/Vtm2m7z88g/

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\a9c2f27b0666affc9f3cb78b5d662606cd0cb1be1c1dafd2c260ae229953b7c0.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:1684
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1020
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1060
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:380
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1420

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1684-54-0x000000002F191000-0x000000002F194000-memory.dmp

    Filesize

    12KB

  • memory/1684-55-0x00000000711D1000-0x00000000711D3000-memory.dmp

    Filesize

    8KB

  • memory/1684-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1684-57-0x00000000721BD000-0x00000000721C8000-memory.dmp

    Filesize

    44KB

  • memory/1684-58-0x0000000075B61000-0x0000000075B63000-memory.dmp

    Filesize

    8KB

  • memory/1684-67-0x00000000721BD000-0x00000000721C8000-memory.dmp

    Filesize

    44KB