Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT CottonCastle/Niteris EK Flash Exploit URI Struct June 19 2015"; flow:established,to_server; http.method; content:"GET"; http.uri; pcre:"/^\/[a-z]+\/[a-z]+\/\d\/[A-Z]+\/[a-f0-9]{32}(?:[a-f0-9]{8})?\//"; http.referer; content:"http"; startswith; content:"/%"; content:"http%3A%2F%2F"; fast_pattern; distance:2; within:13; nocase; classtype:exploit-kit; sid:2021309; rev:4; metadata:created_at 2015_06_19, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_01;)