I recently installed MalwareBytes and Malwarebytes AdwCleaner and ran the scans because I have been getting a lot of pop-ups after letting my friend use my computer. I ran the Adwcleaner three times, but this file is still remaining even after I cleaned it (three times). The file is under WINDOWS\SysNative\drivers\kisknl_del.sys. I am unsure if this file is actually harmful, should I be worried about it? If so, how would I deal with this problem? I have put the logs of my scans from MalwareBytes and AdwCleaner in a pastebin because I can't seem to find an attach button on the forum (Sorry). Thanks !