ET MALWARE Possible Zendran ELF IRCBot Joining Channel

Query · suricata

flow:established,to_server;
content:"USER ass localhost localhost"; nocase;
Raw source ET MALWARE Possible Zendran ELF IRCBot Joining Channel · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible Zendran ELF IRCBot Joining Channel";
    flow:established,to_server;
    content:"USER ass localhost localhost"; nocase;
    reference:url,blog.malwaremustdie.org/2014/05/threat-analysis-zendran-elf-ddos-scheme.html;
    reference:url,capsop.com/lightaidra-cc-investigation/;
    classtype:trojan-activity;
    sid:2018482; rev:2;
    metadata:created_at 2014_05_19, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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