IRIMG1.JPG is a legitimate media file format supported by Apprentice Video. However, it's not an essential part of the system, so you can remove it if you believe that it's causing problems on your computer.
There are lots of legitimate file names that have been been used by malware creators for hiding their viruses and preventing their removal. IRIMG1.JPG file has also been involved to such activity. According to security experts, this file might be related to SearchAndDestroy and other dangerous programs. When involved to malicious activity, it may be used for degrading system's performance, altering it and performing other annoying or dangerous actions. So, before you leave or remove this file from your computer, you should check it with RegCure Pro.