alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible PurpleFox EK Framework Flash HEAD Request"; flow:established,to_server; http.method; content:"HEAD"; http.uri; content:".swf"; endswith; http.host; content:"rawcdn.githack.com"; fast_pattern; depth:18; endswith; http.cookie; content:"__cfduid="; depth:9; http.header_names; content:"|0d 0a|Accept|0d 0a|"; depth:10; classtype:exploit-kit; sid:2028977; rev:3; 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 2020_10_21;)