ET RETIRED TA421 Wineloader CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/api.php";
http.user_agent;
content:"Mozilla/5.0|20 28|Windows NT 10.0|3b 20|Win64|3b 20|x64|3b 20|rv|3a|86.1|29 20|Gecko/20100101 Firefox/86.1"; fast_pattern;
http.header;
content:"Content-Length|3a 20|";
target:src_ip;
Raw source ET RETIRED TA421 Wineloader CnC Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED TA421 Wineloader CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api.php";
    http.user_agent;
    content:"Mozilla/5.0|20 28|Windows NT 10.0|3b 20|Win64|3b 20|x64|3b 20|rv|3a|86.1|29 20|Gecko/20100101 Firefox/86.1"; fast_pattern;
    http.header;
    content:"Content-Length|3a 20|";
    reference:url,www.zscaler.com/blogs/security-research/european-diplomats-targeted-spikedwine-wineloader;
    classtype:trojan-activity;
    sid:2051131; rev:2;
    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 2024_02_27, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family TA421, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_07_14, reviewed_at 2025_07_14;
    target:src_ip;
)

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