Conficker Worm Resources
The Internet Storm Center has a nice summary of Conficker removal instructions and domain blocklists. Resources include:
Downadup.B/Conflicker.B IP generation and domain name predictor tool
http://mnin.blogspot.com/2009/01/downatool-for-downadupbconflickerb.html
Detecting Conficker in your Network
http://www.cert.at/static/conficker/TR_Conficker_Detection.pdf
Full List of Conficker Domains
http://www.cert.at/static/conficker/all_domains.txt
We have included a list of domains and zone files in DNS-BH format. There are over 90,000 (!)domains, which is too many to include in the main blocklist file. Some may be duplicates with entries already in the main file, so you may have to manually remove them.