ET MALWARE JS SpyPress C2 Success Callback (PHP)

alert http [$HOME_NET,$SMTP_SERVERS] any -> any any (
    msg:"ET MALWARE JS SpyPress C2 Success Callback (PHP)";
    flow:established,to_server;
    http.request_line;
    content:"GET /?se=ph"; fast_pattern; startswith;
    http.header_names;
    content:!"user-agent|0d 0a|"; nocase;
    http.method;
    content:"GET";
    reference:url,www.proofpoint.com/us/blog/threat-insight/ta458-roundpress-exploits;
    classtype:trojan-activity;
    sid:2071251; 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 T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)