W97M/Myna is a simple Word 97 macro virus.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
W97M/Myna.C infects the global template when an infected document is opened or created.
The virus uses a string "MYNAMEISVIRUS" as an infection marker, thus the name.
It does not do anything else but replication.
Technical Details: Katrin Tocheva and Sami Rautiainen, F-Secure