ET RETIRED Win32/SaintStealer Data Exfiltration Attempt M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Win32/SaintStealer Data Exfiltration Attempt M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/receive.php?"; startswith;
    pcre:"/^[0-9]{9}$/R";
    http.header_names;
    content:!"User-Agent";
    content:!"Referer";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|";
    content:"|40|"; distance:0;
    pcre:"/^[A-F0-9]{32}/R";
    content:".zip"; distance:0;
    content:"|0d 0a 0d 0a|PK|03 04|"; within:400;
    content:"|00 00 00|"; distance:1;
    content:"Screenshot.jpg"; distance:20; within:300; fast_pattern;
    threshold:type limit, seconds 120, count 1, track by_src;
    reference:md5,3659201ce95a682f5e2b6c019342b0e4;
    classtype:trojan-activity;
    sid:2039022; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_09_27, deployment Perimeter, former_category MALWARE, malware_family SaintStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;
)