ET FTP Outbound Java Downloading jar over FTP

Query · suricata

flow:to_server,established;
flowbits:isset,ET.Java.FTP.Logon;
content:".jar"; nocase; fast_pattern;
content:"RETR ";
pcre:"/^[^\r\n]+\.jar/Ri";

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET FTP Outbound Java Downloading jar over FTP · 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 tcp $HOME_NET any -> $EXTERNAL_NET 21 (
    msg:"ET FTP Outbound Java Downloading jar over FTP";
    flow:to_server,established;
    flowbits:isset,ET.Java.FTP.Logon;
    content:".jar"; nocase; fast_pattern;
    content:"RETR ";
    pcre:"/^[^\r\n]+\.jar/Ri";
    classtype:misc-activity;
    sid:2016688; rev:3;
    metadata:created_at 2013_03_29, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

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