how to stop malware running on my droplet which is utilising all the cpu.
I have a droplet running ubuntu 16.04 with apache and mysql. I have hosted a wordpress website on this server which was running fine. But week ago mysql was stopped working automatically. which when I later examine and found that a process running on my droplet using all the cpu.
This process is cache.sh which is using 98% of cpu, because of which apache and mysql stopped working.
When i kill the process it starts again. I can't find any solution to kill this process permanently or secure my site from such attacks.
It looks like it is a crypto mining malware which is using all resources to mine crypto currency.
How should I stop and block this process.