ET MALWARE Possible Win32/Napolar.A URL Response

Query · suricata

flow:from_server,established;
http.stat_code;
content:"200";
file.data;
content:"!http|3a|//"; within:8;
pcre:"/^[^\r\n]+?\$$/R";
Raw source ET MALWARE Possible Win32/Napolar.A URL 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Win32/Napolar.A URL Response";
    flow:from_server,established;
    http.stat_code;
    content:"200";
    file.data;
    content:"!http|3a|//"; within:8;
    pcre:"/^[^\r\n]+?\$$/R";
    reference:md5,9a8cee88d7440f25be8404b71cb584de;
    reference:md5,b70f8d0afa82c222f55f7a18d2ad0b81;
    classtype:trojan-activity;
    sid:2017367; rev:3;
    metadata:created_at 2013_08_22, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_24;
)

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