ET MALWARE Potential Sefnit C2 traffic (from server)

Query · suricata

flow:from_server,established;
content:"SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.1";
Raw source ET MALWARE Potential Sefnit C2 traffic (from server) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any 443 -> any any (
    msg:"ET MALWARE Potential Sefnit C2 traffic (from server)";
    flow:from_server,established;
    content:"SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.1";
    classtype:command-and-control;
    sid:2018449; rev:8;
    metadata:created_at 2014_05_05, signature_severity Major, updated_at 2019_07_26;
)

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