alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET MALWARE Possible Upatre SSL Cert"; flow:established,to_client; content:"|55 04 03|"; content:"|1e|static-182-18-143-140.ctrls.in"; distance:1; within:31; reference:md5,b4d63a1178027f64c4c868181437284d; classtype:trojan-activity; sid:2018542; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2014_06_07, deployment Perimeter, malware_family Upatre, confidence Medium, signature_severity Critical, tag SSL_Malicious_Cert, tag Exploit_Kit, tag Downloader, tag Upatre, updated_at 2019_07_26;)