ET ATTACK_RESPONSE Possible /etc/passwd via SMTP (BSD style)

Query · suricata

flow:established,to_server;
content:"root|3a|*|3a|0|3a|0|3a|"; nocase;
content:"|3a|/root|3a|/bin"; nocase;
Raw source ET ATTACK_RESPONSE Possible /etc/passwd via SMTP (BSD style) · 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 25 (
    msg:"ET ATTACK_RESPONSE Possible /etc/passwd via SMTP (BSD style)";
    flow:established,to_server;
    content:"root|3a|*|3a|0|3a|0|3a|"; nocase;
    content:"|3a|/root|3a|/bin"; nocase;
    classtype:successful-recon-limited;
    sid:2003150; rev:6;
    metadata:created_at 2010_07_30, confidence Medium, signature_severity Minor, updated_at 2019_07_26;
)

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