I found a PERL script in my root directory (public_html) and I have no idea who uploaded it and how. I know this itself is a concern to me but what I really need to know is what this script can do in worst case scenario. It was on the server for about 48 hours and I don't know what could have happened during this time.
I'm running a website with joomla! so maybe the hacker gained access to "configuration.php", mysql passwords...
Since I don't know PERL I really need your help. I attach the file that was located on the server "public_html" named "escan". Thank you!