ET POLICY Python-urllib/ Suspicious User Agent

Query · suricata

flow:established,to_server;
http.user_agent;
content:"Python-urllib/"; nocase; depth:14;
http.host;
content:!"dropbox.com"; endswith;
content:!"downloads.ironport.com"; endswith;
content:!".ubuntu.com"; endswith;
Raw source ET POLICY Python-urllib/ Suspicious 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 POLICY Python-urllib/ Suspicious User Agent";
    flow:established,to_server;
    http.user_agent;
    content:"Python-urllib/"; nocase; depth:14;
    http.host;
    content:!"dropbox.com"; endswith;
    content:!"downloads.ironport.com"; endswith;
    content:!".ubuntu.com"; endswith;
    reference:url,www.useragentstring.com/pages/useragentstring.php;
    classtype:attempted-recon;
    sid:2013031; rev:9;
    metadata:created_at 2011_06_14, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;
)

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