alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Word RTF Memory Corruption Payload Inbound (CVE-2014-1761)"; flow:from_server,established; file_data; content:"{|5c|rt{"; content:"|5c|objocx|5c|"; distance:0; content:"MSComctlLib."; content:"|5c|u-554"; fast_pattern; content:"|5c|u-554"; distance:0; content:"|5c|u-554"; distance:0; content:"|5c|u-554"; content:"|5c|u-554"; distance:0; content:"|5c|u-554"; distance:0; content:"|5c|u-554"; distance:0; content:"|5c|u-554"; distance:0; reference:url,blogs.technet.com/b/srd/archive/2014/03/24/security-advisory-2953095-recommendation-to-stay-protected-and-for-detections.aspx; classtype:attempted-user; sid:2018313; rev:6; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_03_25, deployment Perimeter, confidence Low, signature_severity Major, tag Web_Client_Attacks, tag CISA_KEV, updated_at 2022_11_15;)