alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT SPL2 EK Landing Dec 09 2013"; flow:from_server,established; file_data; content:"$.getVersion(|22|Silverlight|22|)"; content:"$.getVersion(|22|Java|22|)"; content:"calcMD5(encode_utf8(location"; classtype:exploit-kit; sid:2017826; rev:3; metadata:created_at 2013_12_10, confidence High, signature_severity Major, updated_at 2019_07_26;)