ET EXPLOIT_KIT RIG EK URI struct Oct 24 2016 (RIG-v)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT RIG EK URI struct Oct 24 2016  (RIG-v)";
    flow:established,to_server;
    flowbits:set,ET.RIGEKExploit;
    http.uri;
    content:"/?"; depth:2;
    content:"q=";
    content:"oq="; fast_pattern;
    pcre:"/^\/(?=.*?[&?][a-z]{2}_[a-z]{2}=\d+(?:&|$))(?=.*?[&?]q=(?:[A-Za-z0-9_-]{4})*(?:[A-Za-z0-9_-]{2}|[A-Za-z0-9_-]{3})+(?:&|$))(?=.*?[&?]oq=(?:[A-Za-z0-9_-]{4})*(?:[A-Za-z0-9_-]{2}|[A-Za-z0-9_-]{3})+(?:&|$)).*?[&?][a-z]{3}=[A-Za-z_]{3,20}(?=[a-z\d]*\x2e)(?=[a-z\x2e]*\d)[a-z\d\x2e]+(?:&|$)/";
    classtype:exploit-kit;
    sid:2023401; rev:7;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2016_10_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Exploit_kit_RIG, updated_at 2020_10_07;
)