ET INFO 404 Response with Javascript Variable in Page

Query · suricata

flow:established,to_client;
http.response_line;
content:"HTTP/1.1 404 Not Found";
file.data;
content:"<script language=|22|Javascript|22|>var _skz_pid|20|=|20 22|"; fast_pattern;
Raw source ET INFO 404 Response with Javascript Variable in Page · 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 INFO 404 Response with Javascript Variable in Page";
    flow:established,to_client;
    http.response_line;
    content:"HTTP/1.1 404 Not Found";
    file.data;
    content:"<script language=|22|Javascript|22|>var _skz_pid|20|=|20 22|"; fast_pattern;
    classtype:bad-unknown;
    sid:2039070; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_09_30, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_30;
)

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