alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed TA450 Domain (moodleuni .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".moodleuni.com"; endswith; fast_pattern; reference:md5,64e7e2d2e037d21e8564de52061a31c7; classtype:trojan-activity; sid:2064088; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_08_21, deployment Perimeter, confidence High, signature_severity Major, tag TA450, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_21;)