ET HUNTING SUSPICIOUS Java Request With Uncompressed JAR/Class Mozilla JS Class Creation

Query · suricata

flow:established,from_server;
flowbits:isset,et.JavaArchiveOrClass;
file_data;
content:"sun.org.mozilla.javascript.internal.Context";
content:"sun.org.mozilla.javascript.internal.GeneratedClassLoader";

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 HUNTING SUSPICIOUS Java Request With Uncompressed JAR/Class Mozilla JS Class Creation · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET HUNTING SUSPICIOUS Java Request With Uncompressed JAR/Class Mozilla JS Class Creation";
    flow:established,from_server;
    flowbits:isset,et.JavaArchiveOrClass;
    file_data;
    content:"sun.org.mozilla.javascript.internal.Context";
    content:"sun.org.mozilla.javascript.internal.GeneratedClassLoader";
    classtype:trojan-activity;
    sid:2017768; rev:3;
    metadata:created_at 2013_11_26, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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