Summary

X97M/Button is an Excel 97 macro virus.

Additional Details

VARIANT:

Button.A

When an infected workbook is opened, X97M/Button.A infects all worbooks that are currently open in Excel. During the process, it creates a temporary file, "C:\cmdbutton.bas" and adds a button of a smiling face to the menu bar of Excel.

[Analysis: Sami Rautiainen, F-Secure]