A Dynamic Link Library (DLL) injector is a piece of software designed to force a running process (in this case, VALORANT.exe or its associated subprocesses) to load external code.

Most downloadable "Valorant injectors" found on public forums or video descriptions are disguised malware, info-stealers, or ransomware targeting your personal data. Safe Alternatives to Improve Valorant Performance

This technique writes the DLL directly into the target process's memory without using standard Windows APIs (like LoadLibrary ). This is a standard feature for "better" injectors aiming for stealth.