alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT KaiXin Exploit Kit Java Class"; flow:to_client,established; file_data; content:"Gond"; pcre:"/^(?:a(?:ttack|dEx[xp])|([a-z])\1)\.class/Ri"; flowbits:isset,ET.http.javaclient; reference:url,kahusecurity.com/2012/new-chinese-exploit-pack/; classtype:exploit-kit; sid:2015575; rev:11; metadata:created_at 2012_08_04, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)