Macro and script virus polymorphism presented at Virus Bulletin 2002

by Vesselin Bontchev (Frisk software international),


Summary : In an attempt to make their viruses more difficult to detect, virus
authors are resorting to increasingly more sophisticated polymorphic
mechanisms. This trend is only likely to continue in the future. In
this paper we attempt to describe and classify the different
polymorphic mechanisms used by the macro and script viruses so far,
the kinds of technological advance they require from the anti-virus
programs, and the likely future trends of polymorphic virus