ET MALWARE APT32 Win32/Ratsnif Requesting Command from CnC

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/cl_client_cmd.php"; depth:18; fast_pattern; endswith;
Raw source ET MALWARE APT32 Win32/Ratsnif Requesting Command from CnC · 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 APT32 Win32/Ratsnif Requesting Command from CnC";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/cl_client_cmd.php"; depth:18; fast_pattern; endswith;
    reference:url,threatvector.cylance.com/en_us/home/threat-spotlight-ratsnif-new-network-vermin-from-oceanlotus.html;
    classtype:targeted-activity;
    sid:2027658; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_07_02, deployment Perimeter, malware_family Ratsnif, performance_impact Low, confidence High, signature_severity Major, tag APT32, updated_at 2020_09_17;
)

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