ET MALWARE Trickbot Checkin Response

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.content_type;
content:"text/plain"; bsize:10;
http.header;
content:"Content-Length|3a 20|3|0d 0a|"; fast_pattern; nocase;
file.data;
content:"/1/"; depth:3; endswith;
Raw source ET MALWARE Trickbot Checkin Response · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Trickbot Checkin Response";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"text/plain"; bsize:10;
    http.header;
    content:"Content-Length|3a 20|3|0d 0a|"; fast_pattern; nocase;
    file.data;
    content:"/1/"; depth:3; endswith;
    reference:md5,5d2d59d6cbff1dc1d108bdcae0294c51;
    classtype:command-and-control;
    sid:2032218; rev:6;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_02_15, deployment Perimeter, malware_family TrickBot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_19;
)

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