ET WEB_SERVER Weevely PHP backdoor detected (passthru() function used) M1

Query · suricata

flow:to_server,established;
http.header;
content:"QHBhc3N0aHJ1KC";
Raw source ET WEB_SERVER Weevely PHP backdoor detected (passthru() function used) M1 · 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 (passthru() function used) M1";
    flow:to_server,established;
    http.header;
    content:"QHBhc3N0aHJ1KC";
    reference:url,bechtsoudis.com/security/put-weevely-on-the-your-nids-radar;
    classtype:web-application-activity;
    sid:2013938; rev:7;
    metadata:created_at 2011_11_22, signature_severity Minor, updated_at 2020_11_19;
)

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