alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Internet Explorer execCommand function Use after free Vulnerability 0day"; flow:established,to_client; file_data; content:".execCommand|28|"; nocase; fast_pattern; pcre:"/^[\r\n\s]*[\x22\x27](s|\\(x|u00)[57]3)(e|\\(x|u00)[46]5)(l|\\(x|u00)[46]c)(e|\\(x|u00)[46]5)(c|\\(x|u00)[46]3)(t|\\(x|u00)[57]4)(A|\\(x|u00)[46]1)(l|\\(x|u00)[46]c){2}/Ri"; content:".write("; nocase; content:"parent|2e|"; nocase; distance:0; pcre:"/^\w+?\[[^\]]+?\]\.src[\r\n\s]*=/Ri"; content:"onselect"; nocase; reference:url,eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/; reference:cve,CVE-2012-4969; classtype:attempted-user; sid:2015711; rev:7; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_and_Server, created_at 2012_09_18, deployment Perimeter, deployment Internal, confidence Low, signature_severity Major, tag Web_Client_Attacks, tag CISA_KEV, updated_at 2022_06_10, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise; target:dest_ip;)