ET WEB_SERVER Weevely PHP backdoor detected (system() function used)

Query · suricata

flow:to_server,established;
http.header;
content:"QHN5c3Rl";
Raw source ET WEB_SERVER Weevely PHP backdoor detected (system() function used) · 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 -> $HTTP_SERVERS any (
    msg:"ET WEB_SERVER Weevely PHP backdoor detected (system() function used)";
    flow:to_server,established;
    http.header;
    content:"QHN5c3Rl";
    reference:url,bechtsoudis.com/security/put-weevely-on-the-your-nids-radar;
    classtype:web-application-activity;
    sid:2013937; rev:7;
    metadata:created_at 2011_11_21, signature_severity Minor, updated_at 2020_05_14;
)

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