ET MALWARE Possible Malicious Tor Module Download

Query · suricata

flow:established,to_server;
http.uri;
content:"/tor/"; fast_pattern;
pcre:"/\/tor\/[^\x2f\x2e]+(?:32|64)\.dll$/i";
http.content_type;
content:"application/x-www-form-urlencoded"; startswith;
http.header_names;
content:!"Referer|0d 0a|";
content:!"Accept";
Raw source ET MALWARE Possible Malicious Tor Module Download · Suricata
Esc
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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible Malicious Tor Module Download";
    flow:established,to_server;
    http.uri;
    content:"/tor/"; fast_pattern;
    pcre:"/\/tor\/[^\x2f\x2e]+(?:32|64)\.dll$/i";
    http.content_type;
    content:"application/x-www-form-urlencoded"; startswith;
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"Accept";
    reference:md5,dacbf4c26c5642c29e69e336e0f111f7;
    classtype:trojan-activity;
    sid:2023471; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_11_01, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_10_07;
)

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