alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed BlueMoon EK CnC Related Domain in TLS SNI"; flow:established,to_server; tls.sni; bsize:18; content:"shop.vaughtpop.com"; fast_pattern; nocase; classtype:command-and-control; sid:2072081; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSEncrypt, created_at 2026_09_17, deployment Perimeter, malware_family BlueMoonEK, performance_impact Low, confidence High, signature_severity Critical, updated_at 2026_09_17;)