ET RETIRED Win32.Stealer.alwu Data Exfiltration Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Win32.Stealer.alwu Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/"; startswith;
    content:"|5f 28|"; distance:0;
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|Uploaded file|22 3b|";
    content:"filename|3d 22|imapmigtool.log|22|"; distance:0; fast_pattern;
    reference:md5,0c8139896b1bb0679940985b9a88087c;
    classtype:trojan-activity;
    sid:2038732; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_02, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17, reviewed_at 2024_09_17;
)