When it removes a file from the infected computer then copies the address book and sends itself out, it really takes the file from the unknow infected persons files and sends it out.
There have been corporate cases with this virus where important documents have been lost completely. And then there have also been minor things forwarded like family pictures or diary entries, one such infected email contained a letter to Amazon .com that someone had sent including thier Visa charge card #.
So as always NEVER open an attachment from someone you do not know, and then only open them (from someone you know) if the person told you they are sending it to you in the first place.
This is CABL.com posting #45707. Tiny Link: cabl.co/ml3n