1. CustomProcessMonitor - The C# project monitors the system's opened and newly opened processes. Prints information about processes to the console: PID, Process Name, CPU Usage, Memory Usage, and Start Time. You need to press Q or q to exit. The project is used to inject into it and change its behavior.

2. InjectDLLProtectionPlugin - The C++ DLL that protects the target application from DLL injection. The project uses Microsoft Detours library to inject into the target application and set the hook.

3. ProcessHide_Deviare and ProcessHidePlugin_Deviare- Projects use Nektra Deviare library to inject into the running application and hide the process named "DangerousMiner". This is achieved by injecting DLL written in C++ and setting the hook on the OpenProcess WinAPI function call. Need to provide the PID of an application into what needs to inject DLL. After that, all the OpenProcess function calls will be intercepted.

4. ProcessHide_EasyHook and ProcessHidePlugin_EasyHook - Projects written in C# that use EasyHook library to inject into the running application and hide the process named "DangerousMiner". This is achieved by injecting DLL and setting the hook on the OpenProcess WinAPI function call. Need to provide PID or full path to an executable file of an application into what needs to inject DLL. After that, all the OpenProcess function calls will be intercepted.

5. DangerousMiner - The WPF project that creates the process is named "DangerousMiner". The application simulates time-consuming operations. This application is used to demonstrate how to work ProcessHide_Deviare and ProcessHide_EasyHook projects. Without injecting DLL, the "DangerousMiner" process displays in the CustomProcessMonitor project, but after using ProcessHide_Deviare or ProcessHide_EasyHook applications - the process will not be shown when the user starts it.

6. 3rd-party - The source code and licenses of libraries that were used for projects.

1. Clone this repository.
2. Open a solution file via Visual Studio.
3. Specify solution configuration to DEBUG.
4. Specify solution platform to x86.
5. Perform Build Solution.

After successfully building the solution, a Debug folder will be created in the Solution directory. The folder contains all built executable and DLL files.

• To use Deviare library, the user must register the respective COM object in the system. So, open CMD as administrator and navigate to Debug folder, which contains all built executable and DLL files, and run the command:

Regsvr32 DeviareLiteCOM.dll

• Run CustomProcessMonitor.exe to open process monitor application.
• Run ProcessHide_Deviare.exe or ProcessHide_EasyHook.exe, then provide a PID of CustomProcessMonitor. After that, the ProcessHidePlugin_Deviare.dll or ProcessHidePlugin_EasyHook.dll will be injected into the target application.
• Open a DangerousMiner to test that the process will not be shown in CustomProcessMonitor application.

• Navigate to the Debug folder and open a configuration file for CustomProcessMonitor.exe: "CustomProcessMonitor.exe.config".
• Change the "ApplyProtection" value to "true" and save changes.
• Run CustomProcessMonitor.exe to open process monitor application with the protection. InjectDLLProtectionPlugin.dll will be injected into an application to protect it.
• Try to inject some DLLs into CustomProcessMonitor.exe using ProcessHide_Deviare.exe or ProcessHide_EasyHook.exe.
• As a result, the application must notify you that something is trying to inject DLL and reject its request.

Apriorit released Simple-DLL-Injection-Protect under the OSI-approved 3-clause BSD license. You can freely use it in your commercial or opensource software.