alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT SunDown EK Flash Exploit Sep 22 2016"; flow:established,to_server; flowbits:set,SunDown.EK; http.uri; content:".swf"; fast_pattern; endswith; pcre:"/^\/\d+\/\d+\.swf$/"; http.referer; content:"/index.php?"; pcre:"/^http\x3a\x2f\x2f[^\r\n\x2f]+\/index\.php\?[^\x3d&]+=(?:[A-Za-z0-9_-]{4})*(?:[A-Za-z0-9_-]{2}==|[A-Za-z0-9_-]{3}=)?$/"; classtype:exploit-kit; sid:2023270; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2016_09_22, deployment Perimeter, malware_family SunDown, malware_family Exploit_Kit, confidence High, signature_severity Major, tag Exploit_Kit_Sundown, updated_at 2024_02_28;)