ET WEB_SERVER Weevely PHP backdoor detected (passthru() function used) M2

Query · suricata

flow:to_server,established;
http.header;
content:"BwYXNzdGhydSgn";
Raw source ET WEB_SERVER Weevely PHP backdoor detected (passthru() function used) M2 · 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) M2";
    flow:to_server,established;
    http.header;
    content:"BwYXNzdGhydSgn";
    reference:url,bechtsoudis.com/security/put-weevely-on-the-your-nids-radar;
    classtype:web-application-activity;
    sid:2025593; rev:3;
    metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2018_06_14, deployment Datacenter, malware_family weevely, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25;
)

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