alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Magnitude EK Landing Oct 08 2015"; flow:established,from_server; file_data; content:"/x-silverlight-2"; nocase; fast_pattern; content:"value"; pcre:"/^\s*?=\s*?[\x22\x27][a-z\d]+\.xap[\x22\x27]/Rs"; content:"/x-shockwave-flash"; nocase; content:!".swf"; nocase; content:"<param"; nocase; pcre:"/^(?=[^>]*?\sname\s*?\x3d\s*?[\x22\x27]?movie[\x22\x27]?)[^>]*?\svalue\s*?\x3d\s*?[\x22\x27][^\x22\x27]+\/(?:\??[a-f0-9]+)?[\x22\x27]/Ri"; classtype:exploit-kit; sid:2021939; rev:6; metadata:created_at 2015_10_09, confidence High, signature_severity Major, updated_at 2019_10_08;)