alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cinoshi Clipper Domain (tryno .ru) in TLS SNI"; flow:established,to_server; tls.sni; bsize:8; content:"tryno.ru"; fast_pattern; reference:url,blog.cyble.com/2023/03/23/cinoshi-project-and-the-dark-side-of-free-maas/; classtype:trojan-activity; sid:2046803; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_07_11, deployment Perimeter, malware_family Cinoshi_Clipper, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_07_11;)