ET RETIRED TA404/Zinc Trojanized muPDF/Subliminal CnC Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/support/support.asp"; bsize:20; fast_pattern;
http.header_names;
content:!"Referer";
http.request_body;
content:"bbs=";
content:"article=";
Raw source ET RETIRED TA404/Zinc Trojanized muPDF/Subliminal 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 TA404/Zinc Trojanized muPDF/Subliminal CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/support/support.asp"; bsize:20; fast_pattern;
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"bbs=";
    content:"article=";
    reference:url,www.microsoft.com/security/blog/2022/09/29/zinc-weaponizing-open-source-software/;
    classtype:trojan-activity;
    sid:2039076; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_09_30, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;
)

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