I do not provide cracked or pirated links. Using cracked plugins from random "keygen" sites is the #1 way to infect a legacy Windows machine. Instead, here is the legitimate path to get Noiseware running on Photoshop CS6 (64-bit) today.
If you lost your original installer, email Imagenomic support directly. They are surprisingly helpful for CS6 users, often providing a direct Dropbox link to the legacy 64-bit .exe . noiseware photoshop cs6 64 bit link
Here is the guide to getting it installed and running on your system. I do not provide cracked or pirated links
Noiseware for Photoshop CS6 (64-bit): The Last Stable Link & Installation Guide If you lost your original installer, email Imagenomic
(Disclaimer: Imagenomic and Adobe are trademarks of their respective owners. This guide is for educational purposes for existing license holders.)
If you cannot find a legitimate link, consider (the last standalone version). It works as a standalone application, not just a plugin. You can edit your photo in CS6, save it as a TIFF, open it in standalone Noiseware, and bring it back.