ET MALWARE Sentinel Stealer Data Exfiltration Attempt

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;
)