alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Terror EK Payload Download"; flow:established,to_server; http.uri; content:"e=cve"; fast_pattern; pcre:"/[&?]e=cve\d{8}(?:&|$)/"; pcre:"/=[a-f0-9]{32,}(?:&|$)/"; http.header_names; content:!"Referer|0d 0a|"; classtype:exploit-kit; sid:2024180; rev:4; 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_04_04, deployment Perimeter, malware_family Exploit_Kit_Terror, performance_impact Low, confidence High, signature_severity Major, tag Exploit_Kit_Terror, updated_at 2020_10_09;)