ET RETIRED GO/Titan Stealer Data Exfiltration Attempt

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED GO/Titan Stealer Data Exfiltration Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/sendlog"; bsize:8;
    http.header;
    content:"Userid|3a 20|"; fast_pattern;
    http.request_body;
    content:"B64=UEs"; startswith;
    reference:md5,82040e02a2c16b12957659e1356a5e19;
    classtype:trojan-activity;
    sid:2039778; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_14, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_17, reviewed_at 2025_04_17;
)