ET RETIRED Win32/Delf.TJJ CnC Checkin M2

Query · suricata

flow:established,to_server;
http.request_line;
content:"POST /index/eventup.html HTTP/1.0";
http.user_agent;
content:"Mozilla/3.0|20 28|compatible|3b 20|Indy Library|29|";
http.header_names;
content:!"Referer";
http.request_body;
content:"event|3d 7b 22|info|22 3a 7b 22|pid|22 3a|"; fast_pattern; startswith;
Raw source ET RETIRED Win32/Delf.TJJ CnC Checkin M2 · 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 Win32/Delf.TJJ CnC Checkin M2";
    flow:established,to_server;
    http.request_line;
    content:"POST /index/eventup.html HTTP/1.0";
    http.user_agent;
    content:"Mozilla/3.0|20 28|compatible|3b 20|Indy Library|29|";
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"event|3d 7b 22|info|22 3a 7b 22|pid|22 3a|"; fast_pattern; startswith;
    reference:md5,2e7b9acaf5725c84c9ec9687af15d48e;
    classtype:trojan-activity;
    sid:2037108; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_06_24, deployment Perimeter, former_category MALWARE, malware_family Delf_TJJ, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_17, reviewed_at 2025_04_17;
)

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