// test.cpp → compile as test.dll (x64, Release) #include #include #include BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved) { if (reason == DLL_PROCESS_ATTACH) { DisableThreadLibraryCalls(hModule); // 1. MessageBox = instant visible proof MessageBoxA(NULL, "DLL INJECTED & DLLMAIN RAN!", "SUCCESS", MB_ICONINFORMATION); // 2. Drop a file so you can see it even if no GUI std::ofstream out("C:\\Users\\MyWindowsUser\\AppData\\Local\\Temp\\AREYOUWORKING.txt"); out << "DLL loaded at " << GetTickCount64() << " into PID " << GetCurrentProcessId() << std::endl; out.close(); // 3. Keep process alive (critical!) CreateThread(NULL, 0, [](LPVOID) -> DWORD { for (;;) Sleep(60000); return 0; }, nullptr, 0, nullptr); } return TRUE; }