Random processes high CPU

[Rido]

Hi,

For a week now, my CentOS 7 server with Directadmin has a high load.
After a full reboot a new random (other service) process appears to have high load.

I tried to upgrade the resources (VPS) and ran a full yum update. But each time after a reboot the issue returns.

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
920 root 20 0 65512 6588 344 S 199.0 0.1 11:36.80 nginx

At this moment it's a nginx process but before it was httpd, chronyd, sendmail, etc.

Does anyone have an idea how I can solve this?

Thanks

 

[Rido]

UPDATE:

Today I've looked at the path of the process, and that looks strange:

[root@hosting02 log]# ll /proc/1065/exe
lrwxrwxrwx 1 root root 0 Feb 18 18:17 /proc/1065/exe -> /usr/local/bin/.~2a96 (deleted)

I don't trust it at all, so ClamAV is now running.