Window Process Injection

A Windows process injection proof-of-concept / demo / (or educational) project, implemented in [language — e.g. C / C++ / C#] (adjust as appropriate). This repository demonstrates how to inject code into a running Windows process using standard API techniques — useful for learning, research, or understanding how process injection works from a security perspective.

Table of Contents

• About
• Why This Matters
• Features
• Techniques Demonstrated
• Prerequisites
• Building the Project
• Usage
• Risks & Security Considerations
• Mitigations
• Future Work
• Ethical Use
• Acknowledgements / References

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About

This project implements process injection on Windows: it demonstrates how to allocate memory in another process, write executable code (e.g. shellcode), and execute it in the context of the target process. The goal is to teach / experiment / research with injection techniques commonly used by malware, reverse engineers, and security researchers.

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Why This Matters

Process injection is a powerful technique often used in malware and advanced attacks. By injecting code into a legitimate process, an attacker can:

• Hide malicious execution under the guise of a trusted process ([MITRE ATT&CK][1])
• Gain execution privileges consistent with the target process ([SentinelOne][2])
• Bypass certain security mechanisms, because the injected code doesn’t necessarily run from a separate, suspicious binary ([MakeUseOf][3])

Understanding these techniques is crucial for both red-teamers (offensive) and blue-teamers (defensive).

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Features

• Demonstrates allocation of remote memory in a target process
• Writes arbitrary code (or shellcode) into that remote memory
• Executes the injected code using a remote thread or another execution primitive
• Simple example / proof-of-concept (POC) that is easy to understand and modify
• Logging and error checking (if implemented)
• Clean, commented code for educational use

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Techniques Demonstrated

Depending on your implementation, you might cover:

1. Classic DLL Injection — forcing a process to load a DLL. ([Wikipedia][4])
2. PE (Portable Executable) Injection — writing a PE binary into memory of another process, then executing it. ([MITRE ATT&CK][5])
3. Remote Thread Execution — using CreateRemoteThread or equivalent to start code in the target process. ([Microsoft][6])
4. (Optional) Advanced Techniques — using NtSetInformationProcess, APC injection, or other less-common methods. ([mini-01-s3.vx-underground.org][7])

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Prerequisites

• A Windows development machine
• A compiler / toolchain for your language (e.g., Visual Studio for C/C++)
• Appropriate permissions to open and inject into a target process
• (Optional) A debugger / disassembler to inspect the injected code

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Building the Project

1. Clone the repository:

   git clone https://github.com/TomNguyennn/Window-Process-Injection.git

2. Open the project in your IDE (e.g., Visual Studio)

3. Configure the project to use the correct Windows SDK / target platform

4. Build / compile the injector binary

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Usage

1. Choose a target process: Identify a running process (e.g., via Task Manager) to inject into.
2. Run the injector: Execute the compiled injector with the appropriate arguments (e.g., target PID, path to payload or shellcode).
3. Observe injection: The injector will allocate memory in the target, write code, and execute it.
4. Verify: Use a debugger or process viewer to confirm the code is running inside the target process.
5. Clean up (if implemented): Optionally deallocate memory or close handles to maintain stealth or stability.

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Risks & Security Considerations

• Malicious Use: Process injection is a technique heavily used in malware. This project should be used responsibly.
• System Stability: Injected code can crash the target process, corrupt memory, or destabilize the system.
• Antivirus / EDR Detection: Modern security tools may catch or prevent such behavior, especially if you use common APIs. ([Microsoft][8])
• Permissions: Depending on the target process, you may need elevated privileges to inject.

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Mitigations & Defensive Measures

If you're interested in defense, consider how to detect or prevent process injection:

• Monitor API calls commonly used for injection (e.g., VirtualAllocEx, WriteProcessMemory, CreateRemoteThread) ([SentinelOne][2])
• Use Endpoint Detection & Response (EDR) tools to flag suspicious memory allocations
• Enforce control-flow integrity (CFI) techniques to detect abnormal jumps in execution flow ([Wikipedia][9])
• Employ process creation / execution policies and behavior monitoring

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Future Work

Some possible enhancements or research directions:

• Implement multiple injection techniques (APC, thread hijacking, etc.)
• Add reflective DLL injection (no file on disk)
• Create an evader: try to bypass security tools by obfuscation or non-standard API usage
• Build a defensive module to detect injection behavior
• Support 64-bit / 32-bit cross-architecture injection

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Ethical Use

• This project is intended for educational, research, or security testing purposes only.
• Do not use this code for unauthorised penetration testing, malware creation, or any other illegal activity.
• Always get explicit permission before using these techniques on machines you do not own.

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Acknowledgements / References

• MITRE ATT&CK — [T1055: Process Injection] ([MITRE ATT&CK][1])
• SentinelOne — Explanation of injection primitives: memory allocation, writing, execution ([SentinelOne][2])
• Academic / research papers on injection techniques ([mini-01-s3.vx-underground.org][10])
• Youtube - https://www.youtube.com/watch?v=zEk3mi4Pt_E&t=1118s (Leet Cipher)