alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible PurpleFox/RIG EK Flash Request M1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".swf"; endswith; http.user_agent; bsize:7; content:"contype"; fast_pattern; http.host; content:!".maxmind.com"; http.cookie; content:"__cfduid="; startswith; http.accept; bsize:3; content:"*/*"; http.header_names; bsize:38; content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cookie|0d 0a 0d 0a|"; classtype:exploit-kit; sid:2028972; rev:4; 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 2024_04_04;)