The Microsoft® Excel Virus Search Add-in is a tool that protects users against the ExcelMacro/Laroux and Laroux B macro viruses.
Laroux
In July 1996, Microsoft learned that Microsoft Excel was the target of a non-destructive, non-harmful macro virus called ExcelMacro/Laroux. This macro does not harm data but does replicate. In November 1996, a variation of the virus called Laroux B was reported. Laroux affects documents created in Microsoft Excel 5.0, Microsoft Excel 7.x for Windows 95 and Windows NT, Microsoft Excel 97 for Windows 95 and Windows NT, and Microsoft Excel 98 for Macintosh.
Though Laroux does not harm data, Microsoft has developed a tool to address the problem. The Microsoft Excel Virus Search Add-in developed by Microsoft will detect and remove Laroux when the user scans an infected file.
Installation instructions:
NOTE: Use this add-in if you use Microsoft Excel 98. To install the Virus Search Add-in properly on your system, please download the files listed below in the order indicated.
1. Place the Excel Virus Search Add-In file in your Microsoft Excel Library folder: Microsoft Office 98: Office: Excel Add-Ins.
2. From the Tools/Add-ins dialog, choose "Excel Virus Search Add-in."