alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED DRIVEBY Sednit EK IE Exploit CVE-2013-3897 M1"; flow:established,from_server; file_data; content:"|5c|x76|5c|x61|5c|x72|5c|x20|5c|x73|5c|x74|5c|x72|5c|x3d|5c|x75|5c|x6e|5c|x65|5c|x73|5c|x63|5c|x61|5c|x70|5c|x65|5c|x28|5c|x22|5c|x25|5c|x75|5c|x31|5c|x34|5c|x31|5c|x34|5c|x25|5c|x75|5c|x31|5c|x34|5c|x31|5c|x34|5c|x22|5c|x29|5c|x3b"; nocase; reference:url,www.welivesecurity.com/2014/10/08/sednit-espionage-group-now-using-custom-exploit-kit/; classtype:targeted-activity; sid:2019374; 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;)