alert dns $HOME_NET any -> any any (msg:"ET MALWARE FIN8 ShellTea CnC in DNS Lookup"; dns.query; content:"cdn-amaznet.club"; nocase; endswith; reference:url,blog.morphisec.com/security-alert-fin8-is-back; classtype:command-and-control; sid:2027466; rev:3; metadata:created_at 2019_06_13, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag FIN8, updated_at 2020_09_17;)