alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT RIG EK URI Struct Feb 26 2017"; flow:established,to_server; urilen:>90; flowbits:set,ET.RIGEKExploit; http.uri; content:"oq="; fast_pattern; pcre:"/^\/\?o?q=(?=[A-Za-z_-]*[0-9])(?=[a-z0-9_-]*[A-Z][a-z0-9_-]*[A-Z])(?=[A-Z0-9_-]*[a-z][A-Z0-9_-]*[a-z])[A-Za-z0-9_-]+&o?q=(?=[A-Za-z_-]*[0-9])(?=[a-z0-9_-]*[A-Z][a-z0-9_-]*[A-Z])(?=[A-Z0-9_-]*[a-z][A-Z0-9_-]*[a-z])[A-Za-z0-9_-]+$/"; http.header_names; content:!"Cookie|0d 0a|"; classtype:exploit-kit; sid:2024020; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_02_27, deployment Perimeter, malware_family Exploit_Kit_RIG, performance_impact Low, confidence High, signature_severity Major, tag Exploit_kit_RIG, updated_at 2020_11_03;)