alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload"; flow:established,to_client; http.stat_code; content:"200"; http.cookie; content:"__cfduid="; http.content_type; content:"image/jpeg"; bsize:10; file.data; content:"|20 2e 20|$Env|3a|comSPEC["; depth:16; nocase; fast_pattern; content:"]-joIN|27 27|)( -JoiN(|20 27|"; nocase; within:30; classtype:exploit-kit; sid:2028976; 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;)