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Analysis

  • max time kernel
    101s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24/11/2022, 06:35

General

  • Target

    b8ecb1dd6b410011cfd634ebfdc483952ffb6547d47aaa50f9761c6a056990e0.xls

  • Size

    122KB

  • MD5

    6be43dc72cc636a2bca94fc13b7ca4ad

  • SHA1

    3a9d19148de2fb228723b33b717111674531449d

  • SHA256

    b8ecb1dd6b410011cfd634ebfdc483952ffb6547d47aaa50f9761c6a056990e0

  • SHA512

    a6f7f7637da55c2afc760e5d5480f7fff4d8a60a850049b30b56e270c2a879f8b68f3b236db6fb7be2c6f17275ed8cd23239a2f2dc6a435f269d440691d28ede

  • SSDEEP

    3072:7sl6Nc7yRzs1H75wkZUgsPI4ukoRWGNvZPcrWVbrTQ7IHqkchYX1qi58:Il6Nc7yRzs1H75wkZUgsPI4ukoRWGNv3

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 3 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Deletes itself 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Views/modifies file attributes 1 TTPs 1 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\b8ecb1dd6b410011cfd634ebfdc483952ffb6547d47aaa50f9761c6a056990e0.xls
    1⤵
    • Deletes itself
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: RenamesItself
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:1180
      • C:\Windows\SysWOW64\attrib.exe
        attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
        3⤵
        • Views/modifies file attributes
        PID:1468
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:2040
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
      2⤵
      • Process spawned unexpected child process
      PID:320

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/288-54-0x000000002F231000-0x000000002F234000-memory.dmp

    Filesize

    12KB

  • memory/288-55-0x0000000071451000-0x0000000071453000-memory.dmp

    Filesize

    8KB

  • memory/288-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/288-57-0x000000007243D000-0x0000000072448000-memory.dmp

    Filesize

    44KB

  • memory/288-58-0x0000000075B11000-0x0000000075B13000-memory.dmp

    Filesize

    8KB

  • memory/288-408-0x000000007243D000-0x0000000072448000-memory.dmp

    Filesize

    44KB

  • memory/288-409-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/288-410-0x000000007243D000-0x0000000072448000-memory.dmp

    Filesize

    44KB