ET USER_AGENTS MSF Meterpreter Default User Agent

Query · suricata

flow:established,to_server;
http.user_agent; bsize:46;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.1|3b 20|Windows NT|29|"; fast_pattern;
Raw source ET USER_AGENTS MSF Meterpreter Default User Agent · 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 USER_AGENTS MSF Meterpreter Default User Agent";
    flow:established,to_server;
    http.user_agent; bsize:46;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.1|3b 20|Windows NT|29|"; fast_pattern;
    reference:url,blog.didierstevens.com/2015/03/16/quickpost-metasploit-user-agent-strings;
    classtype:bad-unknown;
    sid:2021060; rev:4;
    metadata:created_at 2015_05_06, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_10;
)

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