Trojan:W97M/Nastjencro identifies OLE document files that contain malicious embedded macro code.
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.
An Object Linking and Embedding (OLE) file is a compound document that includes content from other programs - for example, a Word document that also contains Excel spreadsheets or embedded images.
OLE document files are used to dynamically link files and applications together for greater convenience. They can however be misused to trick the user into unsuspectingly running malicious code on their own devices.
Trojan:W97M/Nastjencro identifies OLE files that contain malicious macro code. If the user opens the file, the macro code is automatically run and its payload is executed.