ET MALWARE KeyloggerOnline Keylogger Checkin (sleep)

Query · suricata

flow:established,to_server;
http.uri;
content:"/sleep"; fast_pattern;
http.user_agent;
content:"Internet Explorer";
http.header_names;
content:!"|0d 0a|Accept";
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith;
Raw source ET MALWARE KeyloggerOnline Keylogger Checkin (sleep) · 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 KeyloggerOnline Keylogger Checkin (sleep)";
    flow:established,to_server;
    http.uri;
    content:"/sleep"; fast_pattern;
    http.user_agent;
    content:"Internet Explorer";
    http.header_names;
    content:!"|0d 0a|Accept";
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith;
    reference:md5,06b783d348a4f9d72bf743c8262778ef;
    classtype:command-and-control;
    sid:2013368; rev:5;
    metadata:created_at 2011_08_05, signature_severity Major, updated_at 2024_03_08;
)

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