ET MALWARE Unknown Trojan with Fake Java User-Agent

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Java/"; depth:5;
http.request_line;
content:"GET /1.php HTTP/1.1"; fast_pattern;
http.accept;
content:"text/html, image/gif, image/jpeg, *|3b 20|q=.2, */*|3b 20|q=.2"; depth:52; endswith;
http.connection;
content:"keep-alive";
http.header_names;
content:"|0d 0a|Host|0d 0a|"; depth:8;
Raw source ET MALWARE Unknown Trojan with Fake Java User-Agent · 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 Unknown Trojan with Fake Java User-Agent";
    flow:established,to_server;
    http.user_agent;
    content:"Java/"; depth:5;
    http.request_line;
    content:"GET /1.php HTTP/1.1"; fast_pattern;
    http.accept;
    content:"text/html, image/gif, image/jpeg, *|3b 20|q=.2, */*|3b 20|q=.2"; depth:52; endswith;
    http.connection;
    content:"keep-alive";
    http.header_names;
    content:"|0d 0a|Host|0d 0a|"; depth:8;
    classtype:trojan-activity;
    sid:2018640; rev:7;
    metadata:created_at 2014_07_04, confidence Medium, signature_severity Major, updated_at 2020_10_28;
)

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