My CentOS VPS (WHM/cpanel) is infected HDD,CPU and RAM usage at 100% need fix ASAP

Hello guys, My CentOS VPS (WHM/cpanel) is infected HDD,CPU and RAM usage at 100% see the screenshots below. [login to view URL] [login to view URL] My VPS is hosted with OVH i have some wordpress installations there which i dont use and we can delete which may cause the problem.I cant access the individual cpanel accounts only the WHM. I need you to find and indentify the the ROOT CAUSE of the problem and fix my VPS, without damaging the valuable data on my server. When you bid in your proposal write an action plan and how do you plan to fix this, only bid if you are experienced in fixing those kind of issues. I often need sys admin work done so if you are quick and reliable and do this good i will be using you again for sure.