X97M/Smack is an Excel 97 macro virus.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
When an infected workbook is opened, X97M/Smack.A disables the built-in macro virus protection of Excel and removes the "Tools/Macro..." menu.
Then the virus copies the active workbook to Excel's starup directory as the name "XLDATA.XLS". After this has been done, the virus infects all workbooks that are opened.
It activates its payload at September 10th. At this time it shows a message box with the following text:
You know what? You're getting OLD, man!!!
Technical Details:Sami Rautiainen, F-Secure