Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to NanoCore Domain (nanocore2023 .duckdns .org)"; dns.query; content:"nanocore2023.duckdns.org"; nocase; bsize:24; reference:md5,b49b06f2260455820b73afc1727f9b6b; classtype:trojan-activity; sid:2044529; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_03_08, deployment Perimeter, deprecation_reason Age, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_01_24, reviewed_at 2025_01_24;)