alert http [$HOME_NET,$SMTP_SERVERS] any -> any any (
msg:"ET MALWARE OWAReaper C2 File Exfiltration (poison_wizard_error_dom.html)";
flow:established,to_server;
http.uri;
content:"/assets/v1_";
pcre:"/^[A-Za-z0-9\x2d\x5f]+$/R";
http.request_body;
content:"<!DOCTYPE html>";
content:"|20|focuselement|3d 22|true|22|"; fast_pattern;
content:"class|3d 22|ms-font-s|22|";
http.method;
content:"POST";
classtype:trojan-activity;
sid:2071334; rev:1;
metadata:attack_target Client_Endpoint, created_at 2026_07_28, deployment Perimeter, malware_family OWAReaper, confidence High, signature_severity Major, tag c2, updated_at 2026_07_28, former_sid 2868082, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
target:src_ip;
)