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Analysis

  • max time kernel
    287s
  • max time network
    383s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    11/02/2023, 02:21

General

  • Target

    bf8df15084510c5789060594c404cdc67327b166a9c72a3ed8c748ce00c5466c.xls

  • Size

    217KB

  • MD5

    2da931bfc872b5f64bb8073f72b491e9

  • SHA1

    b44b273bd11871c7905129634542479b4564110a

  • SHA256

    bf8df15084510c5789060594c404cdc67327b166a9c72a3ed8c748ce00c5466c

  • SHA512

    c1190f42dd1a144af26c81c12e8f0ed4814d918fbbe3e1dbbf50091087c2ab0026e679852a8e00ea9c0659cfbf5075cfbdcb9f95f77ecdd56b3413ed3bfa41b9

  • SSDEEP

    6144:HKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgByY+TAQXTHGUMEyP5p6f5jQmq:BbGUMVWlbq

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 4 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\bf8df15084510c5789060594c404cdc67327b166a9c72a3ed8c748ce00c5466c.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:1704
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:796
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1072
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1980
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1832

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1704-54-0x000000002FF61000-0x000000002FF64000-memory.dmp

    Filesize

    12KB

  • memory/1704-55-0x0000000070DD1000-0x0000000070DD3000-memory.dmp

    Filesize

    8KB

  • memory/1704-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1704-57-0x0000000074FA1000-0x0000000074FA3000-memory.dmp

    Filesize

    8KB

  • memory/1704-58-0x0000000071DBD000-0x0000000071DC8000-memory.dmp

    Filesize

    44KB

  • memory/1704-59-0x0000000071DBD000-0x0000000071DC8000-memory.dmp

    Filesize

    44KB