Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT KaiXin Secondary Landing Page June 22 2015"; flow:established,from_server; file_data; content:"return binary_to_base64|28|"; content:"return "; pcre:"/^\s*?[\x22\x27][^\x22\x27a-f0-9]68[^\x22\x27a-f0-9]74[^\x22\x27a-f0-9]74[^\x22\x27a-f0-9]70[^\x22\x27a-f0-9]3a[^\x22\x27a-f0-9]2f[^\x22\x27a-f0-9]2f[^\x22\x27]+?[^\x22\x27a-f0-9]00[\x22\x27]/Ri"; classtype:exploit-kit; sid:2021320; rev:2; metadata:created_at 2015_06_23, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)