Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to TA455 Domain (healthcarefluent .com)"; dns.query; dotprefix; content:".healthcarefluent.com"; nocase; endswith; classtype:trojan-activity; sid:2065456; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_10_27, deployment Perimeter, confidence High, signature_severity Major, tag TA455, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_27;)