ET MALWARE Various Malicious AlphaNum DL Feb 10 2016

Query · suricata

flow:established,to_server;
urilen:15<>50;
http.uri;
content:!"=";
content:!"&";
content:!"?";
pcre:"/\/(?=[a-z]{0,7}[0-9])(?=[0-9]{0,7}[a-z])[a-z0-9]{7,8}\/(?=[a-z]{0,7}[0-9])(?=[0-9]{0,7}[a-z])[a-z0-9]{7,8}$/";
http.user_agent;
content:"MSIE 7.0|3b 20|Windows NT"; fast_pattern;
http.header_names;
content:!"Cookie|0d 0a|";
content:!"Referer|0d 0a|";
Raw source ET MALWARE Various Malicious AlphaNum DL Feb 10 2016 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Various Malicious AlphaNum DL Feb 10 2016";
    flow:established,to_server;
    urilen:15<>50;
    http.uri;
    content:!"=";
    content:!"&";
    content:!"?";
    pcre:"/\/(?=[a-z]{0,7}[0-9])(?=[0-9]{0,7}[a-z])[a-z0-9]{7,8}\/(?=[a-z]{0,7}[0-9])(?=[0-9]{0,7}[a-z])[a-z0-9]{7,8}$/";
    http.user_agent;
    content:"MSIE 7.0|3b 20|Windows NT"; fast_pattern;
    http.header_names;
    content:!"Cookie|0d 0a|";
    content:!"Referer|0d 0a|";
    classtype:trojan-activity;
    sid:2022503; rev:6;
    metadata:created_at 2016_02_11, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;
)

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