alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Dridex SSL Cert 30 June 2015"; flow:established,to_client; tls.cert_subject; content:"OU=Passio dpt"; content:"CN=romantik.it"; fast_pattern; reference:md5,0a977dfcb93301f1841dbe2272d3102b; classtype:trojan-activity; sid:2021370; rev:6; metadata:attack_target Client_Endpoint, created_at 2015_06_30, deployment Perimeter, confidence High, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2024_04_23;)