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Analysis

  • max time kernel
    145s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    08/02/2023, 09:55

General

  • Target

    4ac3cfd7ad8cf62e160f55053626f2a2a1cf14ca1045220bb88e38d8e7771001.xlsm

  • Size

    48KB

  • MD5

    c16e305c08dc20f3661f466d0a4f82bd

  • SHA1

    439fdd1d3962e48c01f74e978492d0de412f99c3

  • SHA256

    4ac3cfd7ad8cf62e160f55053626f2a2a1cf14ca1045220bb88e38d8e7771001

  • SHA512

    f9830c9c09dab3cd82b298c6ce62502d41b7670378b4e0dba4fa46a732f3839c896693929eae491f710a74480b0ffbdcd40450793b43fcd3772c872894889399

  • SSDEEP

    1536:1lFXmY3B6Y8r7mfqN1+TpCgcgsMA6VIcrW:1l1mG4YqVN1+TtRrW

Score
10/10

Malware Config

Extracted

Language
xlm4.0
Source
URLs
xlm40.dropper

http://www.arkpp.com/ARIS-BSU/9K1/

xlm40.dropper

http://www.avrworks.com/mail/0Z4GbaKuDTGprJ/

xlm40.dropper

http://www.babylinesl.com/catalog/iVsl6YvlyIyX/

xlm40.dropper

https://physioacademy.co.uk/blog/Qs8QZTp0Z6nKf9YjVBMS/

xlm40.dropper

https://unada.us/acme-challenge/3NXwcYNCa/

xlm40.dropper

https://automobile-facile.fr/wp-admin/QV/

Signatures

  • Process spawned unexpected child process 1 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 7 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\4ac3cfd7ad8cf62e160f55053626f2a2a1cf14ca1045220bb88e38d8e7771001.xlsm
    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:1476
    • C:\Windows\SysWow64\regsvr32.exe
      C:\Windows\SysWow64\regsvr32.exe -s ..\fbd.dll
      2⤵
      • Process spawned unexpected child process
      PID:848

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\fbd.dll

    Filesize

    519B

    MD5

    8e2a0ecbc726b4bc4be8195d8b6f10ca

    SHA1

    9b84a36e86dfeb434868f0eed3054ce2f0c1dce1

    SHA256

    06877bbc4e8fdc35075b31dd87bf76bb1d7fb25f498611f12e2543bd5061564d

    SHA512

    0e944a1c48dc245eb2c266f1294a9387f57abfd805d5bdc863e0d127247079d50aa7dc10174eb76e331159f0061ce9c96755a98a2a9a22ce30c56c385b1b6b6c

  • memory/1476-54-0x000000002F521000-0x000000002F524000-memory.dmp

    Filesize

    12KB

  • memory/1476-55-0x00000000718F1000-0x00000000718F3000-memory.dmp

    Filesize

    8KB

  • memory/1476-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/1476-57-0x0000000075D01000-0x0000000075D03000-memory.dmp

    Filesize

    8KB

  • memory/1476-58-0x00000000728DD000-0x00000000728E8000-memory.dmp

    Filesize

    44KB

  • memory/1476-62-0x00000000728DD000-0x00000000728E8000-memory.dmp

    Filesize

    44KB