I wonder where it stores all this logged information. Despite a lot of references to the Sony rootkit, the author doesn't specifically call this a rootkit other

I wonder where it stores all this logged information. Despite a lot of references to the Sony rootkit, the author doesn't specifically call this a rootkit other than to say it's "completely undetectable" (not really). There's also mention of traces of the program being found in c:\windows\SL, which means its not very well hidden. More information is required.