Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE APT42/TA453 Related CnC Domain in DNS Lookup (s51 .online)"; dns.query; bsize:10; content:"s51.online"; nocase; reference:url,cloud.google.com/blog/topics/threat-intelligence/untangling-iran-apt42-operations; classtype:misc-activity; sid:2052416; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_05_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_06;)