alert udp $HOME_NET any -> any 53 (msg:"ET DELETED Possible Winnti-related DNS Lookup"; content:"|01 00 00 01 00 00 00 00 00 00|"; depth:10; offset:2; content:"|0f|securitytactics|03|com|00|"; nocase; distance:0; fast_pattern; reference:url,401trg.pw/an-update-on-winnti/; classtype:trojan-activity; sid:2024868; rev:3; metadata:created_at 2017_10_18, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)