Apparently Microsoft are offering a $250,000 bounty for finding any information that may lead to the culprit.(I don't know if that is real or not)
You might want to have a look at these to links.
MS Offers Bounty for Head of Conficker Worm / Infopackets.com How To: Protect Your Windows PC from the Conficker Worm
~Fastboy42~
P.S (I'm kinda worried about what it may do if it got into my computer, but I 've got my antivirus all updated so I should be fine.
)