alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT ScanBox Jun 06 2015 M2 T1"; flow:established,from_server; file_data; content:"$=window|3b|"; nocase; fast_pattern; content:"var "; nocase; pcre:"/^\s*?[$_]+w[$_]+i[$_]+=window\x3b/Rsi"; content:"function "; pcre:"/^\s*?[_$]+\x28\x29/Rsi"; classtype:exploit-kit; sid:2021543; rev:3; metadata:created_at 2015_07_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)