alert tls $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET DELETED Possible Upatre SSL Cert venturesonsite.com"; flow:established,from_server; content:"|55 04 03|"; content:"|12|venturesonsite.com"; distance:1; within:19; reference:md5,ef88df67a0bcb872143543ebad0ba91d; classtype:trojan-activity; sid:2019077; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2014_08_27, deployment Perimeter, malware_family Upatre, signature_severity Critical, tag SSL_Malicious_Cert, tag Exploit_Kit, tag Downloader, tag Upatre, updated_at 2019_07_26;)