Summary
F-Secure Anti-Virus had a relatively common false alarm with this virus in March 2001. This false alarm caused FSAV to report the Opera virus in several different VxD files.
Removal
If you find Opera in a file with vxd extension, simply download the latest updates for your F-Secure Anti-Virus to fix this false alarm.
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.
Technical Details
Opera is a DOS-based virus. Two varianst are currently known. It is resident, non-encrypted, non-polymorphic. Infects COM and VXD files using prepending infection method. The virus can be removed using F-Secure Anti-Virus.
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