htop always show one cpu usage full

I have a server with two cpus (24 core * 2), recently, I noted that htop always report one cpu is fully usage But I cant find any threads with highly cpu usage by htop, top or ps -ef I have tried: reboot system update htop My system is:

cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.6 (Maipo)

uname -a
Linux server 3.10.0-957.el7.x86_64 #1 SMP Thu Oct 4 20:48:51 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

# update To put it simply, I first encountered this problem, that is, htop showed that half of the CPU was occupied, but other commands such as top and ps were inconsistent with this. At first, I thought it was htop's fault. After I posted this problem, I came up with a simple method. I checked the power of the server through out-of-band management, and I found that the total power was very large, close to 300W, which was consistent with a cpu running at full speed when the server had no other load. Then I suspected that some hidden processes used CPU and checked this through the unhide tool (http://github.com/YJesus/Unhide) . unhide list a lot of hide process, that not showing in top and htop after search in Google, I think its beacuse of a kind of crypto mining malware After kill all of this, the CPU usage in htop is ok, but after reboot this hide process run again