ET MALWARE Generic - 8Char.JAR Naming Algorithm

Query · suricata

flow:established,to_client;
http.header;
content:"-Disposition|3a 20|inline"; nocase;
content:".jar"; fast_pattern;
pcre:"/[=\"]\w{8}\.jar/i";
file.data;
content:"PK"; depth:2;
Raw source ET MALWARE Generic - 8Char.JAR Naming Algorithm · 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 MALWARE Generic - 8Char.JAR Naming Algorithm";
    flow:established,to_client;
    http.header;
    content:"-Disposition|3a 20|inline"; nocase;
    content:".jar"; fast_pattern;
    pcre:"/[=\"]\w{8}\.jar/i";
    file.data;
    content:"PK"; depth:2;
    classtype:trojan-activity;
    sid:2015050; rev:6;
    metadata:created_at 2012_07_12, confidence Medium, signature_severity Major, updated_at 2020_11_05;
)

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