ET MALWARE FakeAV checkin

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Mozilla/5.0 (compatible|3b 20|MSIE 9.0|3b 20|Windows NT 7.1|3b 20|Trident/5.0)"; fast_pattern;
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; depth:20;
content:!"Accept";
Raw source ET MALWARE FakeAV checkin · Suricata
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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 FakeAV checkin";
    flow:established,to_server;
    http.user_agent;
    content:"Mozilla/5.0 (compatible|3b 20|MSIE 9.0|3b 20|Windows NT 7.1|3b 20|Trident/5.0)"; fast_pattern;
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; depth:20;
    content:!"Accept";
    reference:md5,dd4d18c07e93c34d082dab57a38f1b86;
    reference:md5,5a864ccfeee9c0c893cfdc35dd8820a6;
    classtype:command-and-control;
    sid:2016089; rev:6;
    metadata:created_at 2012_12_22, signature_severity Major, updated_at 2020_08_18;
)

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