alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Magnitude CVE-2015-3113 Jun 29 2015 M1"; flow:established,to_server; urilen:10; content:"/video.flv"; nocase; http_uri; fast_pattern; pcre:"/Referer\x3a\x20http\x3a\x2f+?(?:[\x2eg-z]*[a-f0-9][\x2eg-z]*){32}\.[^\x2f\r\n]*?\x2f+\[\[DYNAMIC\]\]\x2f\d*?\r\n?/H"; pcre:"/Host\x3a\x20(?:[\x2eg-z]*[a-f0-9][\x2eg-z]*){32}\./H"; classtype:exploit-kit; sid:2021364; rev:3; metadata:created_at 2015_06_29, signature_severity Major, tag CISA_KEV, updated_at 2019_10_08;)