alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE SSL/TLS Certificate Observed (Maldoc CnC)"; flow:established,to_client; tls.cert_subject; content:"CN=Cricking Merrily Sandoval/O=Appertained Screened/L=Regulation Icbm/ST=New York/C=US"; reference:url,twitter.com/jfslowik/status/1135567258472853505; classtype:command-and-control; sid:2027477; rev:3; metadata:attack_target Client_Endpoint, created_at 2019_06_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;)