Zlob fake codec has been update. It drops the following file:
%SYSTEM%\xevhbpw.dll
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
"{201a14d7-b5b4-422c-816f-5f2a1e92e0e7}"="incorrectnesses"
It also installs Toolbar, BHO, Antispycheck Rogue software...
SmitfraudFix removes the infection.