alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspected Andariel/TA430 Related Domain in TLS SNI"; flow:established,to_server; tls.sni; bsize:10; content:"clientName"; fast_pattern; reference:url,asec.ahnlab.com/en/56405/; reference:md5,3532a0d5911a407f2632eeba906009ea; classtype:bad-unknown; sid:2051117; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_02_27, deployment Perimeter, performance_impact Low, confidence Low, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_27, reviewed_at 2024_03_28; target:src_ip;)