alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ZPHP CnC Domain in TLS SNI (3hhr8h2hx .top)"; flow:established,to_server; tls.sni; bsize:13; content:"3hhr8h2hx.top"; fast_pattern; reference:url,www.proofpoint.com/us/blog/threat-insight/are-you-sure-your-browser-date-current-landscape-fake-browser-updates; classtype:domain-c2; sid:2054588; rev:1; metadata:created_at 2024_07_19, performance_impact Low, confidence High, signature_severity Critical, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)