alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Magnitude EK Landing Aug 21 2015"; flow:established,from_server; file_data; content:"/x-silverlight-2"; nocase; fast_pattern; content:"value"; pcre:"/^\s*?=\s*?[\x22\x27][a-z]+\.xap[\x22\x27]/Rs"; content:"/x-shockwave-flash"; nocase; content:!".swf"; nocase; content:"<div"; pcre:"/^[^>]*?id\s*?=[\x22\x27][a-z0-9]+[\x22\x27][^>]*?>\s*?[\x2a\d]{100}/R"; classtype:exploit-kit; sid:2021699; rev:3; metadata:created_at 2015_08_21, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)