alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET DELETED Possible Upatre Downloader SSL certificate"; flow:established,from_server; content:"|2a 86 48 86 f7 0d 01 09 01|"; pcre:"/^.{2}(?P<fake_email>([asdfgh]+|[qwerty]+|[zxcvbn]+)\@([asdfgh]+|[qwerty]+|[zxcvbn]+)\.).+?\x2a\x86\x48\x86\xf7\x0d\x01\x09\x01.{2}(?P=fake_email)/Rs"; classtype:trojan-activity; sid:2017733; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2013_11_20, deployment Perimeter, malware_family Upatre, signature_severity Critical, tag SSL_Malicious_Cert, tag Exploit_Kit, tag Downloader, tag Upatre, updated_at 2019_07_26;)