Seems you were faster with posting the answer before I even sent the quesion :slight_smile:

As for the Sircam-B & Sircam-C thing: Sircam-C is probably a packed version of Sircam-B (btw, the Sircam-B name is really without the [Wrm] tag?). When Sircam has been added to the virus database, avast! did not feature UPX/AsPack unpacking (or whatever Sircam-B is packed with) - so, the signature for the packed version has been added. Now, when it’s able to unpack the packed executable, it finds even the “inner” file, which is Sircam-B.
I think it’s not a problem… the signatures for the packed versions make it possible to identify the virus even with an older version of avast, or with archive-scanning turned off.