Zlob fake codec has been update. It drops the following file:
%SYSTEM%\bcxjqr.dll
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
"{e3623691-f85d-48d8-8e4d-abe79077f841}"="awash"
It also installs Toolbar, BHO, Virus Response Lab 2009 software...
SmitfraudFix removes the infection.