ET MALWARE Win32/Throwback Server Response (Incoming)

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
file.data;
content:"<title>404 Not Found</title>";
content:"<h1>Not Found</h1>"; distance:0;
content:"<hidden stup1fy|20|"; distance:0; fast_pattern;
Raw source ET MALWARE Win32/Throwback Server Response (Incoming) · 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 Win32/Throwback Server Response (Incoming)";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    file.data;
    content:"<title>404 Not Found</title>";
    content:"<h1>Not Found</h1>"; distance:0;
    content:"<hidden stup1fy|20|"; distance:0; fast_pattern;
    reference:url,github.com/silentbreaksec/Throwback;
    classtype:trojan-activity;
    sid:2036591; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_05_12, deployment Perimeter, malware_family Throwback, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_12;
)

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