WM/Setmd is a simple macro virus that activates when an infected document is opened in Word. It infects the global template and all opened documents thereafter.
It also sets a timer so the virus attempts to infect the active document in every five minutes.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Technical Details: Sami Rautiainen, F-Secure