ET HUNTING Screenshot Uploaded to Discord

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/api/webhooks";
http.host;
content:"discord.com";
http.request_body;
content:"filename=";
content:"screenshot."; within:12; fast_pattern;
Raw source ET HUNTING Screenshot Uploaded to Discord · 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET HUNTING Screenshot Uploaded to Discord";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/api/webhooks";
    http.host;
    content:"discord.com";
    http.request_body;
    content:"filename=";
    content:"screenshot."; within:12; fast_pattern;
    reference:md5,19917b254644d1039dd31d0a488ddeeb;
    classtype:bad-unknown;
    sid:2033447; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_07_27, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_27;
)

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