IE Defender/Files Secure/MalwareBell/IE Antivirus Codec has been update, it installs a file with semi-random filename composed from fragment words: video, ie, ievid, odk, dsa, a32
Possible filenames are: videoodk.dll, videodsa.dll, videoa32.dll, ieodk.dll, iedsa.dll, iea32.dll, ievidodk.dll, ieviddsa.dll, ievida32.dll.
It displays alert messages with popups that download IE Antivirus:
Use SmitfraudFix to remove the infection.