alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED DRIVEBY Nuclear EK IE Exploit CVE-2013-2551 March 12 2014"; flow:from_server,established; file_data; content:"#default#VML"; nocase; fast_pattern; content:"stroke"; nocase; content:"visibility"; nocase; content:"hidden"; nocase; distance:0; content:"|22|f"; nocase; pcre:"/^\d+([\x22\x27]\s*?,\s*[\x22\x27])?r\d+([\x22\x27]\s*?,\s*[\x22\x27])?o\d+([\x22\x27]\s*?,\s*[\x22\x27])?m\d+([\x22\x27]\s*?,\s*[\x22\x27])?C\d+([\x22\x27]\s*?,\s*[\x22\x27])?h\d+([\x22\x27]\s*?,\s*[\x22\x27])?a\d+([\x22\x27]\s*?,\s*[\x22\x27])?r\d+([\x22\x27]\s*?,\s*[\x22\x27])?c\d+([\x22\x27]\s*?,\s*[\x22\x27])?o\d+([\x22\x27]\s*?,\s*[\x22\x27])?d\d+([\x22\x27]\s*?,\s*[\x22\x27])?e\d+[\x22\x27]/Ri"; classtype:exploit-kit; sid:2018262; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Any, attack_target Client_Endpoint, created_at 2014_03_13, deployment Perimeter, malware_family Nuclear, signature_severity Critical, tag DriveBy, tag Exploit_Kit, tag Nuclear, tag CISA_KEV, updated_at 2023_01_26;)