Looks like they didn't.
[link|http://www.f-secure.com/v-descs/sobig_f.shtml|http://www.f-secure....scs/sobig_f.shtml]
Update on 19:00 UTC
When deadline for the attack was passed, one machine was still (somewhat) up. However, immediately after the deadline, this machine (located in the USA) was totally swamped under network traffic.
We've tried connecting to it, just like the virus does. We do this from three different sensors from three different machines in three different countries. We haven't been able to connect to it once. If we can't connect, neither can the viruses.
So the attack failed. Whoa.
We'll keep monitoring until 22:00 UTC. If we're not able to connect once, we can safely say that the attack was prevented.
Update on 19:50 UTC
Still not a single connection from any of our sensors to any of the servers.
In that final hour, when each breath is a struggle to take, and you are looking back over your life's accomplishments, which memories would you treasure? The empires you built, or the joy you spread to others?
Therin lies the true measure of a man.