![]() However, Windows operating systems do not provide any built-in mechanisms to facilitate this. ![]() Since the library, the process and the environment are owned and executed by the same user, this is not considered a security risk at all and it's used everyday for many development tools. LD_PRELOAD="./tobeinjected.so" targetProgram To achieve this, this technique is usually complemented with function hooking which involves intercepting the call of a specific function and redirecting this call to our own implementation into the injected library.įor such legit usages, Unix-like operating systems (as Linux) provide built-in capabilities for dynamic library injection, for example via LD_PRELOAD environment variable: DLL injection is a technique used for executing code within the space of a program, by forcing it to load and run a dynamic library that was not considered by its original design.Īlthough this may sound malicious, and indeed many malware use this kind of techniques, the truth is that it has many legit usages such as debugging or monitoring the target process.
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