alert http $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET EXPLOIT_KIT Sakura - Java Exploit Recievied"; flow:established,to_client; flowbits:isset,ET.http.javaclient; file.data; content:"PK"; within:2; content:"javax/crypto/spec/SecretKeySpec"; distance:0; classtype:exploit-kit; sid:2016785; rev:4; metadata:created_at 2013_04_26, signature_severity Major, updated_at 2024_03_13;)