alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Blatantly Evil JS Function"; flow:established,from_server; file_data; content:"function heap"; nocase; content:"spray"; nocase; within:6; classtype:trojan-activity; sid:2017498; rev:3; metadata:created_at 2013_09_20, signature_severity Major, updated_at 2019_07_26;)