Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE TA453 Related Domain in DNS Lookup (mailer-daemon .online)"; dns.query; content:"mailer-daemon.online"; nocase; bsize:20; classtype:trojan-activity; sid:2041129; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_11_30, deployment Perimeter, deprecation_reason Age, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_08, reviewed_at 2024_10_08;)