alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Zloader Domain (adsmarks .com in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".adsmarks.com"; endswith; fast_pattern; reference:md5,b788b7ee53c221ae785e7f28d491e4cc; classtype:trojan-activity; sid:2065731; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_11_11, deployment Perimeter, malware_family Zloader, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_11;)