alert dns $HOME_NET any -> any any (msg:"ET MALWARE X CnC Domain in DNS Lookup (test .com)"; dns.query; dotprefix; content:".test.com"; nocase; endswith; classtype:trojan-activity; sid:2049957; rev:2; metadata:created_at 2024_01_10, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_10, reviewed_at 2024_01_10;)