alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible $MFT NTFS Device Access in HTTP Response"; flow:from_server,established; content:"file://"; content:"/$MFT/"; distance:0; fast_pattern; content:"src"; pcre:"/^\s*=\s*[^>]*file\x3a[^>]*\/\x24MFT\//Ris"; reference:url,www.securitytracker.com/id/1038575; classtype:trojan-activity; sid:2024337; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_30, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2019_07_26;)