ET MALWARE Possible Tunna Proxy Activity (Response)

Query · suricata

flow:established,from_server;
http.stat_code;
content:"200";
file.data;
content:"|5b|Server|5d 20|All|20|good|20|to|20|go"; startswith; fast_pattern;
Raw source ET MALWARE Possible Tunna Proxy Activity (Response) · 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 -> any any (
    msg:"ET MALWARE Possible Tunna Proxy Activity (Response)";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    file.data;
    content:"|5b|Server|5d 20|All|20|good|20|to|20|go"; startswith; fast_pattern;
    reference:url,github.com/SECFORCE/Tunna;
    classtype:trojan-activity;
    sid:2028576; rev:2;
    metadata:created_at 2019_09_12, deployment Perimeter, malware_family Tunna, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_02;
)

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