ET MALWARE W2KM_BARTALEX August 11 2015

Query · suricata

flow:to_server,established;
http.uri;
content:".jpg"; nocase;
pcre:"/\/(?:[a-z]+|\d+)\.jpg/i";
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.0|3b 20|Windows NT 5.1|3b 20|FSL 7.0.6.01001)"; fast_pattern;
http.header_names;
content:!"Accept";
content:!"Referer|0d 0a|";
Raw source ET MALWARE W2KM_BARTALEX August 11 2015 · 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 W2KM_BARTALEX August 11 2015";
    flow:to_server,established;
    http.uri;
    content:".jpg"; nocase;
    pcre:"/\/(?:[a-z]+|\d+)\.jpg/i";
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 6.0|3b 20|Windows NT 5.1|3b 20|FSL 7.0.6.01001)"; fast_pattern;
    http.header_names;
    content:!"Accept";
    content:!"Referer|0d 0a|";
    reference:md5,1bcea0364088c5308ed217649eeef4d9;
    classtype:trojan-activity;
    sid:2021625; rev:5;
    metadata:created_at 2015_08_14, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_29;
)

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