alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING SUSPICIOUS Java Lang Runtime in Response"; flow:from_server,established; file_data; content:!"|CA FE BA BE|"; within:4; content:"getClass"; nocase; content:"java.lang.Runtime"; nocase; fast_pattern; content:"getRuntime"; nocase; content:"exec"; nocase; content:"script"; nocase; classtype:exploit-kit; sid:2018172; rev:3; metadata:created_at 2014_02_25, confidence Medium, signature_severity Minor, updated_at 2019_10_08;)