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Analysis

  • max time kernel
    147s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    11/02/2023, 02:22

General

  • Target

    f4784d48cd2a8cc765e9fcedd275c97bb1261b0355386c0e6a7f31fc9a0dbf17.xls

  • Size

    218KB

  • MD5

    91adea1d1c57eb2ce7ae45a380038234

  • SHA1

    842215dd05c7774373e5238ba9645af6f792680a

  • SHA256

    f4784d48cd2a8cc765e9fcedd275c97bb1261b0355386c0e6a7f31fc9a0dbf17

  • SHA512

    46086e48fa38fce7c1b77e5179eb69f074a6685c1cd41f5119367297836413871cba2ed23431f317d779db7d49758a19d6a1c1d09b37c95be2ec7f2e9696e2b4

  • SSDEEP

    6144:ik3hOdsylKlgxopeiBNhZF+E+W2kdASyY+TAQXTHGUMEyP5p6f5jQmbh:wbGUMVWlbbh

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\f4784d48cd2a8cc765e9fcedd275c97bb1261b0355386c0e6a7f31fc9a0dbf17.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:1304
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1540
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:548
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1456
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1556

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1304-54-0x000000002FD71000-0x000000002FD74000-memory.dmp

    Filesize

    12KB

  • memory/1304-55-0x0000000071AB1000-0x0000000071AB3000-memory.dmp

    Filesize

    8KB

  • memory/1304-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1304-57-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

    Filesize

    44KB

  • memory/1304-58-0x00000000762E1000-0x00000000762E3000-memory.dmp

    Filesize

    8KB

  • memory/1304-67-0x0000000072A9D000-0x0000000072AA8000-memory.dmp

    Filesize

    44KB