ET MALWARE Possible Siloscape IRC CnC JOIN Command Observed

Query · suricata

flow:established,to_server;
content:"JOIN|20|#WindowsKubernetes"; startswith; fast_pattern;
Raw source ET MALWARE Possible Siloscape IRC CnC JOIN Command Observed · 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 6666:7000 (
    msg:"ET MALWARE Possible Siloscape IRC CnC JOIN Command Observed";
    flow:established,to_server;
    content:"JOIN|20|#WindowsKubernetes"; startswith; fast_pattern;
    reference:url,unit42.paloaltonetworks.com/siloscape/;
    classtype:command-and-control;
    sid:2033266; rev:1;
    metadata:created_at 2021_07_07, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_07;
)

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