Fujack.K is a virus and a network worm. It infects executable files with certain extensions by prepending its body to these files. It also infects webpages by appending an IFrame tag and a malicious URL to them. The worm actively spreads to external media, for example to USB drives or network drives. It attempts to perform a dictionary attack in order to break weak network share passwords. In addition, the worm kills processes belonging to anti-virus and security software as well as processes of the Task Manager and Registry Editor. The worm can download and run malicious files from a website. Fujack.K was possibly created by the author of the Viking virus-worm.
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 detection database 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.