ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload";
    flow:established,to_client;
    content:"|0d 0a 0d 0a 20 28 20 27|"; fast_pattern;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"image/jpeg"; depth:10; endswith;
    http.content_len;
    byte_test:0,>,100000,0,string,dec;
    file.data;
    content:"|20 28 20 27|"; depth:4;
    pcre:"/^[0-9_,{AbZwP&-]{2000}/R";
    classtype:exploit-kit;
    sid:2028981; 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;
)