ET MALWARE Win32/ASPC Bot CnC Checkin M1

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?key=";
content:"&string="; distance:0; fast_pattern;
pcre:"/\.php\?key=[^\r\n]+&string=[^\r\n]+?(?:(?:\x3a\x3a|3A3A)[^\x3a]+?){5,}$/i";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE Win32/ASPC Bot CnC Checkin M1 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/ASPC Bot CnC Checkin M1";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?key=";
    content:"&string="; distance:0; fast_pattern;
    pcre:"/\.php\?key=[^\r\n]+&string=[^\r\n]+?(?:(?:\x3a\x3a|3A3A)[^\x3a]+?){5,}$/i";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,15167239effdfb68bb10467eeea2f24d;
    classtype:command-and-control;
    sid:2024322; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_18, deployment Perimeter, malware_family ASPC_Bot, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_06;
)

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