Hammer.
Run Rkill for a temporary fix.
This program found no issues at all.
Also, I unzipped all the back-up files, and scanned them with Norton 360 on my computer.
There were no viruses found.
So I'm beginning to think this is not a malicious attack, and it's some other error.
DDoS fixed!I have blocked incoming UDP port 19 with the firewall, and the DDoS attack magically stopped!
EDIT:There was never a computer virus!After researching some stuff about how UDP port 19 can be exploited for DoS attacks, I reasoned out that a hacker is using the Chargen service on my VPS to send spammy data to the victim.
During server set-up 2 months ago, I think I installed 'Complex network services' or something like that. And I think the role configurator enabled the service.
The Chargen service is where a client connects to a server on UDP port 19, and the server sends a stream of random numbers or characters back to the client.
Connection logs on my VPS have shown that Skial.com has frequently been using the Chargen service. And they are the victim.
The VPS will not be reset!