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Analysis

  • max time kernel
    144s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-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.

  • 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 12 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\bf8df15084510c5789060594c404cdc67327b166a9c72a3ed8c748ce00c5466c.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:3864
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:1944
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:988
    • C:\Windows\System32\regsvr32.exe
      C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
      2⤵
      • Process spawned unexpected child process
      PID:2308

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1720-132-0x00007FFBDD8B0000-0x00007FFBDD8C0000-memory.dmp

    Filesize

    64KB

  • memory/1720-133-0x00007FFBDD8B0000-0x00007FFBDD8C0000-memory.dmp

    Filesize

    64KB

  • memory/1720-134-0x00007FFBDD8B0000-0x00007FFBDD8C0000-memory.dmp

    Filesize

    64KB

  • memory/1720-135-0x00007FFBDD8B0000-0x00007FFBDD8C0000-memory.dmp

    Filesize

    64KB

  • memory/1720-136-0x00007FFBDD8B0000-0x00007FFBDD8C0000-memory.dmp

    Filesize

    64KB

  • memory/1720-137-0x00007FFBDB3A0000-0x00007FFBDB3B0000-memory.dmp

    Filesize

    64KB

  • memory/1720-138-0x00007FFBDB3A0000-0x00007FFBDB3B0000-memory.dmp

    Filesize

    64KB