alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE BlackTech/PLEAD TSCookie CnC Checkin M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".aspx?m="; fast_pattern; content:"&i="; distance:0; content:"&p="; distance:0; pcre:"/\.aspx\?m=[A-F0-9]{3,40}&i=[A-F0-9]{3,40}&p=[A-F0-9]{3,40}$/i"; http.user_agent; content:"Mozilla/4.0|20 28|compatible|3b 20|MSIE|20|8.0|3b 20|Win32|29|"; endswith; http.header_names; content:!"Referer"; reference:url,blogs.jpcert.or.jp/ja/2018/10/tscookie-1.html; classtype:command-and-control; sid:2026568; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_11_01, deployment Perimeter, malware_family TScookie, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_16;)