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Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2023, 02:07

General

  • Target

    23ebbb920e5e5c9815337e3069c90e2a.xls

  • Size

    36KB

  • MD5

    23ebbb920e5e5c9815337e3069c90e2a

  • SHA1

    bbd7400c042d387dd2b31b0a016d07b8f28fdebe

  • SHA256

    ef14dfd11872d5868c868d851f791f44d60a95ae4f1743fe3be0dc466c1d2e3a

  • SHA512

    3db70047fec5cbf07aef3932d8237ddca7548a08e6fc54e7095240f3147f54cb087a3898acd8d059304cf263e35e9cd691fe8725dd7c75495cc9b4a174025371

  • SSDEEP

    768:cPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJWGqJTF6qEv:Iok3hbdlylKsgqopeJBWhZFGkE+cL2Ny

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 6 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\23ebbb920e5e5c9815337e3069c90e2a.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:5084
    • C:\Windows\explorer.exe
      explorer.exe C:\Users\Public\Documents\Sk1WDhc.vbs
      2⤵
      • Process spawned unexpected child process
      PID:4640
  • C:\Windows\explorer.exe
    C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\Sk1WDhc.vbs"
      2⤵
        PID:3336

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Public\Documents\Sk1WDhc.vbs

      Filesize

      560B

      MD5

      81aa64d53881c78f42261dd82034d906

      SHA1

      922c1a39e01c46841895aaf30ed85937dd829725

      SHA256

      e2ae377e7e0149b942da8e0045d5ebcbaee3e1c5c554de48b70bdfb6f36bf2a6

      SHA512

      4198a623bfeed95267b579b8a173f03172cda3f6a087dd1f7140c0f5a47b2bd1ffd89cbfab9278711f94f3ae7ab9f9fac831b503ef1f67153b98c6b7db38cb3d

    • memory/5084-19-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-20-0x00007FFC7D7F0000-0x00007FFC7D800000-memory.dmp

      Filesize

      64KB

    • memory/5084-5-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-10-0x00007FFC7D7F0000-0x00007FFC7D800000-memory.dmp

      Filesize

      64KB

    • memory/5084-12-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-14-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-16-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-18-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-17-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-13-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-7-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-15-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-3-0x00007FFC7FBF0000-0x00007FFC7FC00000-memory.dmp

      Filesize

      64KB

    • memory/5084-11-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-9-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-8-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-4-0x00007FFC7FBF0000-0x00007FFC7FC00000-memory.dmp

      Filesize

      64KB

    • memory/5084-2-0x00007FFC7FBF0000-0x00007FFC7FC00000-memory.dmp

      Filesize

      64KB

    • memory/5084-1-0x00007FFC7FBF0000-0x00007FFC7FC00000-memory.dmp

      Filesize

      64KB

    • memory/5084-0-0x00007FFC7FBF0000-0x00007FFC7FC00000-memory.dmp

      Filesize

      64KB

    • memory/5084-6-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB

    • memory/5084-23-0x00007FFCBFB70000-0x00007FFCBFD65000-memory.dmp

      Filesize

      2.0MB