How to block Crypto Miner (javascript)

L6 Presenter

Re: How to block Crypto Miner (javascript)

Sinkhole is meant to discover infected hosts when the only thing the firewall sees is queries sourced from an internal DNS server. (Internal DNS server obscuring real source IP's of hosts querying for malicious domains). The idea is that infected hosts may carry out a subsequent connection after resolving a malicious domain, and these will initiate new traffic to the *sinkhole ip* - therefore you would use the traffic logs to see which hosts are attempting to initiate traffic to the *sinkhole ip* (and discover which hosts are infected).

If that's not your topology, then it's better to block.


By the way, you can also set an EDL of type Domain to action 'sinkhole' in the Anti-Spyware profile.

L1 Bithead

Re: How to block Crypto Miner (javascript)

It is my understanding that you cannot use a "Domain" type EDL in a security policy as there is no way to select it. Domain type EDL's only show up in anti-spyware DNS Signature settings. Upon double checking all the lists that are available on the link I provided earlier, I do see an IP list, which can be used in a security policy; so you can directly block that way in addition to sinkholing.

Like what you see?

Show your appreciation!

Click Like if a post is helpful to you or if you just want to show your support.

Click Accept as Solution to acknowledge that the answer to your question has been provided.

The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!

These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!

The Live Community thanks you for your participation!