ET HUNTING suspicious - gzipped file via JAVA - could be pack200-ed JAR

Query · suricata

flow:established,from_server;
flowbits:isset,ET.http.javaclient;
file_data;
content:"|1f 8b 08 00|"; depth:4;
flowbits:set,et.exploitkitlanding;

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

Feeds into

  • 7 rules read et.exploitkitlanding · view all
Raw source ET HUNTING suspicious - gzipped file via JAVA - could be pack200-ed JAR · Suricata
Esc
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 - gzipped file via JAVA - could be pack200-ed JAR";
    flow:established,from_server;
    flowbits:isset,ET.http.javaclient;
    file_data;
    content:"|1f 8b 08 00|"; depth:4;
    flowbits:set,et.exploitkitlanding;
    classtype:trojan-activity;
    sid:2017910; rev:3;
    metadata:created_at 2013_12_30, confidence Medium, signature_severity Major, updated_at 2019_07_26;
)

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