ET MALWARE Kimsuky Related Activity (GET)

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET|20|/?d="; fast_pattern;
http.uri;
pcre:"/^\/\?d=[a-f0-9]{16}$/";
http.header_names;
content:"|0d 0a|UA-CPU|0d 0a|Accept-Encoding|0d 0a|";
content:!"Referer";
Raw source ET MALWARE Kimsuky Related Activity (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Kimsuky Related Activity (GET)";
    flow:established,to_server;
    http.request_line;
    content:"GET|20|/?d="; fast_pattern;
    http.uri;
    pcre:"/^\/\?d=[a-f0-9]{16}$/";
    http.header_names;
    content:"|0d 0a|UA-CPU|0d 0a|Accept-Encoding|0d 0a|";
    content:!"Referer";
    reference:md5,447163d776b62bf0b1c652c996cc0586;
    reference:md5,7e041b101e1e574fb81f3f0cdf1c72b8;
    reference:url,twitter.com/Timele9527/status/1407610627011403779;
    classtype:trojan-activity;
    sid:2033196; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_25, deployment Perimeter, malware_family Kimsuky, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_25;
)

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