ET WEB_SPECIFIC_APPS cmd powershell base64 encoded to Web Server 1

Query · suricata

flow:established,to_server;
content:"Y21kIC9jIHBvd2Vyc2hlbGwuZXhl";
Raw source ET WEB_SPECIFIC_APPS cmd powershell base64 encoded to Web Server 1 · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS any (
    msg:"ET WEB_SPECIFIC_APPS cmd powershell base64 encoded to Web Server 1";
    flow:established,to_server;
    content:"Y21kIC9jIHBvd2Vyc2hlbGwuZXhl";
    classtype:attempted-user;
    sid:2025827; rev:1;
    metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2018_07_12, deployment Datacenter, confidence High, signature_severity Major, updated_at 2019_07_26;
)

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