The new exploit pretends to be one of the many free video codecs found on the Web, which enable end users to view digital video and audio in a faster, compressed format. But when they click on the software and pull up the license agreement, users find that the software has already been installed on their computers.
This is merely one of the myriad incarnations of the same pest; previous ones have been called newvidscodec, emcodec, emediacodec, media-codec, nvidcodec, v-codec, vicodec, mediacodec, pornmagpass, digipassword, xpasswordmanager, pcodec.
All spread via adult sites prompting you to download a 'missing codec' or 'software key' required to view their content and so on...
In fact all of these are detected as variants of the Zlob aka Puper or FakeAle trojan, downloaders that prompt you to install one of the many rogue 'spyware removers' such as SpyAxe, SpywareStrike, SpyFalcon, Winantivirus and many other clones...