alert tls $EXTERNAL_NET [443,4443] -> $HOME_NET any (msg:"ET MALWARE Possible Upatre/Dyre/Kegotip SSL Cert Sept 14 2015"; flow:established,to_client; tls.certs; content:"|06 03 55 04 06 13 02|"; pcre:"/^[A-Z]{2}/R"; content:"|55 04 08|"; distance:0; content:"|55 04 07|"; distance:0; content:"|55 04 03|"; pcre:"/^.{2}[A-Z]?[a-z]+ [A-Z]?[a-z]+/Rs"; content:"|55 04 0b|"; distance:0; byte_extract:1,1,oulength,relative; content:!"|2e|"; within:oulength; content:!"|20|"; within:oulength; pcre:"/^[a-zA-Z0-9]+[01]/R"; content:"|2a 86 48 86 f7 0d 01 09 01|"; distance:0; pcre:"/^.{2}[A-Z]?[a-z]+\.[A-Z]?[a-z]+@gmail\.com[01]/Rs"; content:"@gmail.com"; fast_pattern; reference:md5,f22cad1a3985a5183a76324b448e06f2; reference:url,us-cert.gov/ncas/alerts/TA14-300A; classtype:trojan-activity; sid:2021773; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_09_15, deployment Perimeter, malware_family Upatre, confidence Medium, signature_severity Critical, tag SSL_Malicious_Cert, tag Exploit_Kit, tag Downloader, tag Upatre, updated_at 2024_04_04;)