Here's some information on the malicious file WAUCLT.EXE:
http://spywarefiles.prevx.com/RRHFFH...t%252Eexe.html
Prevx report they are capable of removing this threat with their free trial so it may be worth giving that a shot. It's a pay-for program, but their free trial is fully-functional for at least 30 days which will remove any infections for free during this period. If you don't wish to keep it after cleanup, simply uninstall it.
The same filename may have been used years ago as mentioned by Microsoft, but there are also new malware infections using this same filename as late as January this year, under infections such as Worm.Ircbot.Gen and Trojan.SystemPoser. See here:
http://spywarefiles.prevx.com/ssHFFH.../WAUCmore.html
Many new infections are adding lines to your hosts file in order to stop you visiting sites which may be able to help or delete the malware, as well as some that actively target certain security applications and stop them from running or completing their scans (as you have witnessed with Panda).