Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to MaskGramStealer Domain (morozmyau-658 .cfd)"; dns.query; dotprefix; content:".morozmyau-658.cfd"; nocase; endswith; classtype:trojan-activity; sid:2066633; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_08, deployment Perimeter, malware_family MaskGramStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_08;)