If I may pop in, some websites like Virustotal, test files with over sixty (60) different anti-virus scanners - and none of them, not one, came up with the .EXE file from the Bandicam website as a virus/trojan (including Webroot, as in your images)... https://www.virustotal.com/#/file/868a9 ... /detection
This was with the 4.1.5 file .EXE downloaded directly from the website.
It may be possible, that once the file got onto your system, it became infected with a local virus that you may have... To see if this is the case, run a Full System Scan and try to install another Anti-virus program and run it as a Full System Scan as well (I would try three different ones, if you have the time). If you run into something along the way, such as not being able to install/run some anti-virus or your system locking up or other issues, it may point to an infection on your system.
If that occurs, you can try to 'fight' for your data, by doing a Clean Boot with whatever AV you prefer, then doing a full Clean of your system. If you do not wish to go through this trouble, a retail computer outlet in your area can do it for you (for a price). You can also try simply deleting everything (format/repartition/etc) - but doing this extreme step, you will lose all of your present data. If you do have an infection of some type, doing some searches on steps to take and things to try should start you off. I hope it isn't that for you, and it is just a 'false positive' for Webroot running on your computer (false positives can occur because some scanning utilizes heuristic analysis, which is a 'guessing' at what virii 'look like' and anything similar to it is 'flagged' as a potential virus (to make you do a deeper scan, just to make sure)). GL with it, HTH