I have not encountered any of those virii which you have mentioned, nor do I know about them. You would perhaps have better luck asking questions of these types in other (maybe av-related) boards ... unless someone here has an answer.

Also, most av-programs have informationm regarding the virii that it has found (especially so if the program has detected it), what av program are you using? Some allow you to search for the current virii that it is protecting you against, have you tried doing that -- I know Norton Antivirus does, and it gives you information on it (such as if it is rare, polymorphic, encrypting, memory resident, etc). Good luck!