alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Sentinel Stealer Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"receive.php"; http.content_type; bsize:68; content:"multipart|2f|form-data|3b 20|boundary|3d 22|"; pcre:"/^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}\x22/R"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=file|3b 20|filename|3d|"; content:"|2d|Sentinel-Recovery.zip|22|"; fast_pattern; within:50; content:"PK|03 04|"; within:80; reference:url,app.any.run/tasks/0dba490a-730a-4969-9abe-388ce720fd19; reference:md5,51cd9e6b4cfc89999276391053b688bf; classtype:trojan-activity; sid:2068181; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_03_12, deployment Perimeter, malware_family Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2026_03_12, mitre_tactic_id TA0009, mitre_tactic_name Collection, mitre_technique_id T1005, mitre_technique_name Data_from_local_system; target:src_ip;)