Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE NS SSL Cert APT1"; flow:established,to_client; tls.cert_serial; content:"72:A2:5C:8A:B4:18:71:4e:BF:C6:6F:3F:98:D6:F7:74"; tls.cert_subject; content:"CN=NS"; reference:url,www.mandiant.com/apt1; classtype:targeted-activity; sid:2016466; rev:4; metadata:attack_target Client_Endpoint, created_at 2013_02_22, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2022_03_21;)