Summary
On October 6th, 2005 there appeared another dropper for Sober.S worm.
This dropper drops exactly the same Sober.S variant that started to
spread early in the morning on October 6th. When the dropper is run,
it shows a messagebox as a decoy:
The description of Sober.S worm can be found here:
http://www.f-secure.com/v-descs/sober_s.shtml