ET MALWARE Win32/Alpha Stealer v1.5 PWS Exfil via HTTP

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Alpha Stealer v1.5 PWS Exfil via HTTP";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|";
    pcre:"/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[A-Za-z]+?/Rsi";
    content:"Content-Type|3a 20|application/octet-stream|0d 0a|"; distance:0;
    content:"Screen.jpg"; distance:0; fast_pattern;
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    reference:md5,a55bd3cc5caa47cb45355e9f79d4fc47;
    classtype:trojan-activity;
    sid:2027917; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_26, deployment Perimeter, malware_family Alpha_Stealer, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_09_17;
)