Malware Detect is very easy to install on CentOS, regardless of the control panel you utilize (cPanel/WHM, Directadmin, etc). Maldet also known as Linux Malware Detect virus scanner for Linux.
There is nothing complicated in installation process, but a privileged user access is required, so in case you are on managed server, you can always ask our sysadmins to help you out.
Install maldet on CentOS