alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED DRIVEBY Sednit EK IE Exploit CVE-2014-1776 M3"; flow:established,from_server; file_data; content:"1776_concat.swf"; reference:url,www.welivesecurity.com/2014/10/08/sednit-espionage-group-now-using-custom-exploit-kit/; classtype:targeted-activity; sid:2019370; rev:3; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2014_10_09, deployment Perimeter, confidence Low, signature_severity Major, tag DriveBy, tag CISA_KEV, updated_at 2022_11_23;)