Analysis

  • geolocation tags

    eueuropefrfrance
  • user interaction
    yes
  • max time kernel
    898s
  • max time network
    329s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/09/2026, 18:52

General

  • Target
    .exe
  • Size 3.4MB
  • Sample260912-xjj76sdp21
  • SHA256 377abc9d367e61cb5c4761bf48dcfdf5bcd3822f303e0f972d7f4c8295a2ea79
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 60 IoCs
  • Executes dropped EXE 2 IoCs
  • Modifies system executable filetype association 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\.exe
    "C:\Users\Admin\AppData\Local\Temp\.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4144
    • C:\Program Files\WinRAR\uninstall.exe
      "C:\Program Files\WinRAR\uninstall.exe" /setup
      2⤵
      • Drops file in Program Files directory
      • Executes dropped EXE
      • Modifies system executable filetype association
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2656
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        3⤵
        • Executes dropped EXE
        PID:2428
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3356
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:1640
      • C:\Windows\System32\SecurityHealthHost.exe
        \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
        1⤵
          PID:3784

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              Rar.txt

              • Path C:\Program Files\WinRAR\Rar.txt
              • Size 109KB
              • SHA256 59334a8ffff612755a64a912389bc23fbc35933cf209f845bde34f055011b8a6
              • MD5 SHA1 SHA512 SSDEEP TLSH

              RarExtInstaller.exe

              • Path C:\Program Files\WinRAR\RarExtInstaller.exe
              • Size 179KB
              • SHA256 48b44bd3342a68ecbbd40a485930a22e02fdf157b2939ee346c2b123f6d5e99c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              RarExtPackage.msix

              • Path C:\Program Files\WinRAR\RarExtPackage.msix
              • Size 23KB
              • SHA256 10a9e66b22922211668c9d9be62e309e824ca72114be9e0d090c15ba297ca787
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Uninstall.exe

              • Path C:\Program Files\WinRAR\Uninstall.exe
              • Size 429KB
              • SHA256 fd934c3b663679041b82c12d60b14c51060d8d04742612ed5f9cfa82cccf1d37
              • MD5 SHA1 SHA512 SSDEEP TLSH

              WhatsNew.txt

              • Path C:\Program Files\WinRAR\WhatsNew.txt
              • Size 105KB
              • SHA256 bf30a7d667b61a90bc00908317d96599386c841759540bdb74ca249e28ec8624
              • MD5 SHA1 SHA512 SSDEEP TLSH

              WinRAR.chm

              • Path C:\Program Files\WinRAR\WinRAR.chm
              • Size 317KB
              • SHA256 9d96fddee6df94a3b6bfa731e962d31fedd4d8123aaf29c231b06f0cc10a2b2d
              • MD5 SHA1 SHA512 SSDEEP TLSH

              WinRAR.exe

              • Path C:\Program Files\WinRAR\WinRAR.exe
              • Size 2.4MB
              • SHA256 0d068a6aa2df88613e1c5c7ba412a5a5bc3cadc3f3ab4b76d10035ba8eec27bf
              • MD5 SHA1 SHA512 SSDEEP TLSH