WM/Verm is a macro virus that infects Word documents.
When an infected document is opened, the virus will gets control and infects the Word's "NORMAL.DOT" template. After that, the virus infects every document while it is closed.
This virus has a destructive payload which activates when any infected document has been opened three times. Then it deletes all files from the Word's graphic filters, text converters, proofing tools and style gallery templates directories.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Description Created: Analysis: Sami Rautiainen, F-Secure