it doesn't matter what netfilter frontend you use if you allow outbound connections from any binary.
In order to stop these attacks, restrict outbound connections from unknown / not allowed binaries.
This kind of malware in particular requires outbound connections to the mining pools. Others downloads scripts or binaries from remote servers, or try to communicate with their c2c servers.
On the other hand, removing exec permissions to /tmp, /var/tmp and /dev/shm is also useful.
In order to stop these attacks, restrict outbound connections from unknown / not allowed binaries.
This kind of malware in particular requires outbound connections to the mining pools. Others downloads scripts or binaries from remote servers, or try to communicate with their c2c servers.
On the other hand, removing exec permissions to /tmp, /var/tmp and /dev/shm is also useful.