Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/08/2026, 10:51

General

  • Target
    Paragon Tweaking Utility-4.4.2-amd64-installer.exe
  • Size 49.3MB
  • Sample260822-mx3xbstclc
  • SHA256 466b389348694a8376b3408f09ae2fb3f721bff2005ac8e9b6729aa1ba46c765
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 13 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Paragon Tweaking Utility-4.4.2-amd64-installer.exe
    "C:\Users\Admin\AppData\Local\Temp\Paragon Tweaking Utility-4.4.2-amd64-installer.exe"
    1⤵
    • Drops file in Program Files directory
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ptu-preinstall.exe
      "C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ptu-preinstall.exe" --preinstall-stop --preinstall-self-sha256 "356a88e32835d8555263aba8decd58f16d9bb79f7bc17e016ab921e2d721c12f" --install-dir "C:\Program Files\Paragon Tweaking Utility\Paragon Tweaking Utility"
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:432

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        InstallOptions.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\InstallOptions.dll
        • Size 15KB
        • SHA256 dd0d1a8c4511261333e90a94d9912000592c46731b615aa7a37cd2b3eb6a8d58
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\System.dll
        • Size 12KB
        • SHA256 996645d7f16a6294babb6da83478062aed7b72318d7a51b66e90ab5d3edc51a5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ioSpecial.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ioSpecial.ini
        • Size 1KB
        • SHA256 18dc4b0d083c117478e8da9ac215c23897a5f2581d517522a5614fe290301ad4
        • MD5 SHA1 SHA512 TLSH

        ioSpecial.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ioSpecial.ini
        • Size 1KB
        • SHA256 dce4d9063ec0b576441b3f5e05d7bb3e1050d3deff02a9cbd8f68e6068ea4e60
        • MD5 SHA1 SHA512 TLSH

        ioSpecial.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ioSpecial.ini
        • Size 1KB
        • SHA256 bca7c57d95d7bda6986af7f455a6026c4299bd269794f7848951b2b22c11f7db
        • MD5 SHA1 SHA512 TLSH

        ptu-preinstall.exe

        • Path C:\Users\Admin\AppData\Local\Temp\nso5933.tmp\ptu-preinstall.exe
        • Size 6.5MB
        • SHA256 356a88e32835d8555263aba8decd58f16d9bb79f7bc17e016ab921e2d721c12f
        • MD5 SHA1 SHA512 SSDEEP TLSH