X97M is the current platform identifier used by F-Secure to identify Microsoft Excel (version '97 and later).
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Microsoft Excel (version '97 and later) is identified with a unique platform identifier as it is subject to specific types of malicious programs designed to exploit vulnerabilities in its programming. The most common malware to affect Excel documents are macro viruses.
Examples of X97M malware include:
The Platform designation 'XM' was previously used by F-Secure to identify Microsoft Excel documents. With changes in the threat landscape today, the platform designator has since been updated to 'X97M'.