ET MALWARE Win32/Chinad Checkin

Query · suricata

flow:to_server,established;
http.method;
content:"GET";
http.uri;
content:"/api/?a="; depth:8; fast_pattern;
http.host;
pcre:"/^(?:\d{1,3}\.){3}\d{1,3}$/";
Raw source ET MALWARE Win32/Chinad 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Chinad Checkin";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/?a="; depth:8; fast_pattern;
    http.host;
    pcre:"/^(?:\d{1,3}\.){3}\d{1,3}$/";
    reference:url,blog.malwarebytes.org/intelligence/2015/06/unusual-exploit-kit-targets-chinese-users-part-2;
    reference:md5,5a454c795eccf94bf6213fcc4ee65e6d;
    classtype:command-and-control;
    sid:2021262; rev:3;
    metadata:created_at 2015_06_13, malware_family Win32_Chinad, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_22;
)

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