ET MALWARE Agrius Group Webshell Command Execution Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".aspx"; endswith;
http.request_body;
content:"&bkcm="; fast_pattern;
content:"ErpF=Submit"; distance:0; within:100; endswith;
target:dest_ip;
Raw source ET MALWARE Agrius Group Webshell Command Execution Attempt · 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 -> $HOME_NET any (
    msg:"ET MALWARE Agrius Group Webshell Command Execution Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".aspx"; endswith;
    http.request_body;
    content:"&bkcm="; fast_pattern;
    content:"ErpF=Submit"; distance:0; within:100; endswith;
    reference:url,unit42.paloaltonetworks.com/agonizing-serpens-targets-israeli-tech-higher-ed-sectors/;
    classtype:trojan-activity;
    sid:2049905; rev:1;
    metadata:affected_product Microsoft_IIS, attack_target Web_Server, created_at 2024_01_03, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_01_03, reviewed_at 2025_07_14;
    target:dest_ip;
)

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