ET MALWARE JS SpyPress C2 Success Callback (cURL)

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /?se=cu"; fast_pattern; startswith;
http.user_agent;
content:"curl|2f|";
http.method;
content:"GET";
target:src_ip;
Raw source ET MALWARE JS SpyPress C2 Success Callback (cURL) · 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 [$HOME_NET,$SMTP_SERVERS] any -> any any (
    msg:"ET MALWARE JS SpyPress C2 Success Callback (cURL)";
    flow:established,to_server;
    http.request_line;
    content:"GET /?se=cu"; fast_pattern; startswith;
    http.user_agent;
    content:"curl|2f|";
    http.method;
    content:"GET";
    reference:url,www.proofpoint.com/us/blog/threat-insight/ta458-roundpress-exploits;
    classtype:trojan-activity;
    sid:2071253; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2026_07_21, deployment Perimeter, malware_family SpyPress, confidence High, signature_severity Major, tag c2, updated_at 2026_07_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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