Zmist (also known as Z0mbie.Mistfall) is a metamorphic computer virus created by the Russian virus writer known as Z0mbie. It was the first virus to use a technique known as "code integration" in the words of Ferrie and Ször:
This virus supports a unique new technique: code integration. The Mistfall engine contained in it is capable of decompiling Portable Executable files to their smallest elements, requiring at least 32 MB of memory. Zmist will insert itself into the code: it moves code blocking its way, inserts itself, regenerates code and data references including relocation information, and rebuilds the executable.
The virus has also been described in .
- Zmist.gen!674CD7362358 - discovered in 2012.
- ZMist!IK - discovered 2011 - 2012.
- Zmist.A - discovered in 2006 - 2007.