ET MALWARE Win32/Nuclear Checkin

Query · suricata

flow:established,to_server;
http.uri;
content:".htm";
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.0|3b 20|Win32)";
http.header;
content:"HOST|3A 20|";
Raw source ET MALWARE Win32/Nuclear Checkin · 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/Nuclear Checkin";
    flow:established,to_server;
    http.uri;
    content:".htm";
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.0|3b 20|Win32)";
    http.header;
    content:"HOST|3A 20|";
    reference:md5,bd4af162f583899eeb6ce574863b4db6;
    classtype:command-and-control;
    sid:2014121; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_01_12, deployment Perimeter, malware_family Nuclear, signature_severity Critical, tag Exploit_Kit, tag Nuclear, updated_at 2020_04_21;
)

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