ET MALWARE Java Archive sent when remote host claims to send an image

Query · suricata

flow:established,to_client;
http.content_type;
content:!"application/java-archive";
content:"image"; nocase; startswith;
file.data;
content:"PK"; depth:2;
content:"META-INF/MANIFEST"; distance:0; fast_pattern;
Raw source ET MALWARE Java Archive sent when remote host claims to send an image · 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 MALWARE Java Archive sent when remote host claims to send an image";
    flow:established,to_client;
    http.content_type;
    content:!"application/java-archive";
    content:"image"; nocase; startswith;
    file.data;
    content:"PK"; depth:2;
    content:"META-INF/MANIFEST"; distance:0; fast_pattern;
    classtype:trojan-activity;
    sid:2014288; rev:6;
    metadata:created_at 2012_02_28, signature_severity Major, updated_at 2022_04_18;
)

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