Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/09/2026, 07:14

General

  • Target
    .exe
  • Size 3.4MB
  • Sample260916-h2phaagm71
  • 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:1676
    • 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:3476
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        3⤵
        • Executes dropped EXE
        PID:1820

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