Here's some info from Microsoft regarding a reward program set up in the wake of MyDoom.B.
Microsoft Offers $250,000 Reward for Information Leading to Conviction of MyDoom.B Perpetrators

REDMOND, Wash. -- Jan. 29, 2004 -- Microsoft Corp. today announced that it will pay a $250,000 (U.S.) reward for information resulting in the arrest and conviction of those responsible for unleashing the MyDoom.B worm. MyDoom.B, detected yesterday, is a variant of the earlier released MyDoom.A worm, also known as the Novarg worm, which has spread quickly infecting computers around the world. The release of this B variant triggered the first alert from the newly formed Department of Homeland Security’s cyber alert system yesterday.

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