ET EXPLOIT Linux/Attempted Hosts File Exfil

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"?url=file|3a 2f 2f 2f|etc|2f|hosts"; endswith;
http.header_names;
content:!"Referer";
Raw source ET EXPLOIT Linux/Attempted Hosts File Exfil · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT Linux/Attempted Hosts File Exfil";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"?url=file|3a 2f 2f 2f|etc|2f|hosts"; endswith;
    http.header_names;
    content:!"Referer";
    classtype:attempted-admin;
    sid:2035315; rev:2;
    metadata:affected_product Linux, attack_target Server, created_at 2022_02_28, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_28, reviewed_at 2024_06_26;
)

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