alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Evil Redirect Leading to EK Feb 23 2016"; flow:established,from_server; file_data; content:"|29 7b 72 65 74 75 72 6e 20 4d 61 74 68 2e 72 6f 75 6e 64 28 28 28 28 28|"; content:"|29 7b 72 65 74 75 72 6e 20 4d 61 74 68 2e 72 6f 75 6e 64 28 28 28 28 28|"; distance:0; content:"|3d 66 75 6e 63 74 69 6f 6e 28 29 7b 72 65 74 75 72 6e|"; pcre:"/^\s+\d+\x3b\s*\}/R"; content:"|5d 3d 53 74 72 69 6e 67 2e 66 72 6f 6d 43 68 61 72 43 6f 64 65|"; fast_pattern; classtype:exploit-kit; sid:2022565; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_02_25, deployment Perimeter, confidence High, signature_severity Major, tag Redirector, updated_at 2019_07_26;)