alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNSBin Demo - Data Inbound"; threshold:type limit, track by_src, seconds 180, count 1; dns.query; bsize:>32; content:"|2e|"; content:".i.zhack.ca"; distance:20; within:11; endswith; reference:url,sysopfb.github.io/malware/2019/09/26/Golang-Dropper-With-A-Rat.html; reference:url,github.com/ettic-team/dnsbin; classtype:command-and-control; sid:2028635; rev:2; metadata:attack_target Client_Endpoint, created_at 2019_09_27, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_10;)