W97M/Class.Q is a polymorphic macro virus operating in the Microsoft Word 97 environments. Its presence in system can be found out by file class.sys existing in the root directory of the disk C:. From the viewpoint of function it is identical with the virus W97M/Class.B.

The only difference in the virus code is the absence of the line with the following remark:

'Class.Poppy v 1.2 by VicodinES /TNN /CB