alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE AridViper CnC Domain in SNI"; flow:established,to_server; tls.sni; dotprefix; content:".full.secureportal.space"; endswith; fast_pattern; classtype:targeted-activity; sid:2027312; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_SNI, tag AridViper, updated_at 2023_03_13;)