alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible PurpleFox/RIG EK Flash Request M1"; flow:established,to_server; content:"GET"; http_method; content:".swf"; http_uri; isdataat:!1,relative; content:"contype"; http_user_agent; fast_pattern; depth:7; isdataat:!1,relative; content:"__cfduid="; http_cookie; depth:9; content:!".maxmind.com"; http_host; http_accept; content:"*/*"; depth:3; isdataat:!1,relative; http_header_names; content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cookie|0d 0a 0d 0a|"; depth:38; isdataat:!1,relative; classtype:exploit-kit; sid:2028972; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_14, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_11_15;)