It's numbered 1 as it's included in my client I push out so it's run first before decrypting the client. It came from a tech website I can't recall the name of it as it's been about a year since I acquired it but you're welcome to run a scan on it before using it my AV has never said anything about it haha.
It modifies the client to use the 64bit address or something to allow the client to use more than 2GB iirc of ram which is why you get the out of memory error.