alert tcp $EXTERNAL_NET 443 -> $HOME_NET any (msg:"ET MALWARE [PTsecurity] Malicious SSL connection (Upatre Downloader CnC) cert"; flow:established,to_client; content:"|30 82|"; depth:300; content:"|a0 03 02 01 02 02|"; distance:6; within:6; content:"|63 50 61 6e 65 6c 2c 20 49 6e 63|"; distance:60; within:120; fast_pattern; flowbits:set,FB346039_0; flowbits:noalert; classtype:command-and-control; sid:2024772; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_27, deployment Perimeter, deprecation_reason False_Positive, malware_family Upatre, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2020_08_19;)