alert dns $HOME_NET any -> any any (msg:"ET MALWARE TA409 Related DNS Lookup (navercorp .ru)"; dns.query; bsize:12; content:"navercorp.ru"; nocase; reference:md5,9e6a2914a35256dd450db549fb975f45; reference:url,twitter.com/suyog41/status/1697536913610314016; classtype:domain-c2; sid:2047881; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_09_01, deployment Perimeter, deprecation_reason Age, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_01, reviewed_at 2024_04_01; target:src_ip;)