alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT ZPHP Domain in TLS SNI (eastrenclouds .com)"; flow:established,to_server; tls.sni; bsize:17; content:"eastrenclouds.com"; fast_pattern; reference:url,www.trellix.com/en-us/about/newsroom/stories/research/new-techniques-of-fake-browser-updates.html; classtype:exploit-kit; sid:2048533; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2023_10_10, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_11, reviewed_at 2023_12_11;)