ET MALWARE BlackTech/PLEAD TSCookie CnC Checkin M2

Query · suricata

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";
Raw source ET MALWARE BlackTech/PLEAD TSCookie CnC Checkin M2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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