ET MALWARE ELF/Freakout IRC Checkin

Query · suricata

flow:established,to_server;
content:"NICK|20|[HAX|7c|"; depth:10;
Raw source ET MALWARE ELF/Freakout IRC Checkin · 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 tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE ELF/Freakout IRC Checkin";
    flow:established,to_server;
    content:"NICK|20|[HAX|7c|"; depth:10;
    reference:url,research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/;
    classtype:command-and-control;
    sid:2031534; rev:1;
    metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2021_01_20, deployment Perimeter, malware_family ELF_Freakout, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_01_20;
)

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