ET MALWARE Win32/Chopstick Checkin (APT28 Related)

Query · suricata

flow:to_server,established;
http.method;
content:"POST";
http.uri;
content:"/webhp?rel="; fast_pattern;
content:"ai="; distance:0;
pcre:"/^(?:[A-Za-z0-9_-]{4})*(?:[A-Za-z0-9_-]{2}==|[A-Za-z0-9_-]{3}=|[A-Za-z0-9_-]{4})+/R";
Raw source ET MALWARE Win32/Chopstick Checkin (APT28 Related) · 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/Chopstick Checkin (APT28 Related)";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.uri;
    content:"/webhp?rel="; fast_pattern;
    content:"ai="; distance:0;
    pcre:"/^(?:[A-Za-z0-9_-]{4})*(?:[A-Za-z0-9_-]{2}==|[A-Za-z0-9_-]{3}=|[A-Za-z0-9_-]{4})+/R";
    reference:url,www.fireeye.com/resources/pdfs/apt28.pdf;
    reference:md5,6fc8602c8b3a18765bb6d2307d8a4ae1;
    classtype:targeted-activity;
    sid:2019537; rev:4;
    metadata:created_at 2014_10_28, malware_family Win32_Chopstick, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_13;
)

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