ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server

Query · suricata

flow:established,to_client;
file.data;
content:"<title>GR0V Shell"; nocase; fast_pattern;
content:">GR0V shell</font></center></h1>"; nocase; distance:0;
Raw source ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server · 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 http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server";
    flow:established,to_client;
    file.data;
    content:"<title>GR0V Shell"; nocase; fast_pattern;
    content:">GR0V shell</font></center></h1>"; nocase; distance:0;
    classtype:web-application-attack;
    sid:2031015; rev:2;
    metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2020_10_14, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_14;
)

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