ET MALWARE Joanap CnC Checkin

Query · suricata

flow:to_server,established;
http.uri;
content:".ico";
http.user_agent;
content:"Mozillar"; depth:8; fast_pattern;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE Joanap CnC Checkin · 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 Joanap CnC Checkin";
    flow:to_server,established;
    http.uri;
    content:".ico";
    http.user_agent;
    content:"Mozillar"; depth:8; fast_pattern;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:url,securelist.com/blog/incidents/73914/operation-blockbuster-revealed/;
    reference:url,operationblockbuster.com/resources/index.html;
    classtype:command-and-control;
    sid:2021730; rev:4;
    metadata:created_at 2015_08_31, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_14;
)

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