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Analysis

  • max time kernel
    191s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/12/2023, 03:20

General

  • Target

    4fc3b53b6847285354a3772a4860b2f0.xls

  • Size

    36KB

  • MD5

    4fc3b53b6847285354a3772a4860b2f0

  • SHA1

    cee6f3cb9f7f1f4a3ef5fbe458e12dea4377c75e

  • SHA256

    be63fc8831f99a0412997cfbea77f321188f7ad554b65f2af7d194c0bb129f25

  • SHA512

    6c4be8e7dc16f1243e0746d7c65e631dd2665bc1156c0946a4a5b8ec8d31e37bbf9611fc9e23ac5d77412f156e76660028547fe90247ea73f1324aa846cb7dd4

  • SSDEEP

    768:NPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJirIHlo6Y7Z2yFP:lok3hbdlylKsgqopeJBWhZFGkE+cL2N/

Score
10/10

Malware Config

Signatures

  • Process spawned unexpected child process 1 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
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 4 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\4fc3b53b6847285354a3772a4860b2f0.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4868
    • C:\Windows\explorer.exe
      explorer.exe C:\Users\Public\Documents\JNejL.vbs
      2⤵
      • Process spawned unexpected child process
      PID:1328
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4168
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\JNejL.vbs"
      2⤵
        PID:632

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Public\Documents\JNejL.vbs

      Filesize

      581B

      MD5

      326ad3e196e3f96d74a192ad60cf59d7

      SHA1

      fd7ae06dce705e79936aaa1cb9f2c0036664d3de

      SHA256

      790bc61f65360ad00230b854b5cf70b6a89747ae83ae9745de74a20e6105f7a0

      SHA512

      49d9ae7015a191c359adb84e038603aa50936472460199de0ac8b89a5871112035dc7aabd7917de2c2e94da0db8ea9d3f8f104519cef8caeb073f78a61d5766b

    • memory/4868-5-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-2-0x00007FFE88130000-0x00007FFE88140000-memory.dmp

      Filesize

      64KB

    • memory/4868-4-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-3-0x00007FFE88130000-0x00007FFE88140000-memory.dmp

      Filesize

      64KB

    • memory/4868-6-0x00007FFE88130000-0x00007FFE88140000-memory.dmp

      Filesize

      64KB

    • memory/4868-0-0x00007FFE88130000-0x00007FFE88140000-memory.dmp

      Filesize

      64KB

    • memory/4868-7-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-8-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-9-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-10-0x00007FFE857D0000-0x00007FFE857E0000-memory.dmp

      Filesize

      64KB

    • memory/4868-11-0x00007FFE857D0000-0x00007FFE857E0000-memory.dmp

      Filesize

      64KB

    • memory/4868-13-0x00007FFEC80B0000-0x00007FFEC82A5000-memory.dmp

      Filesize

      2.0MB

    • memory/4868-1-0x00007FFE88130000-0x00007FFE88140000-memory.dmp

      Filesize

      64KB