alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (MalDoc DL 2019-09-17 1)"; flow:established,to_client; tls.cert_subject; content:"OU=Domain Control Validated, OU=PositiveSSL, CN=dapoerwedding.com"; endswith; fast_pattern; reference:url,twitter.com/jeFF0Falltrades/status/1173300902242988032; reference:md5,db51f2715c81c4357d11d69ac96bf582; classtype:domain-c2; sid:2028596; rev:3; metadata:attack_target Client_and_Server, created_at 2019_09_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)