ET MALWARE Win32/Vflooder.C Connectivity Check

Query · suricata

flow:established,to_server;
urilen:1;
http.method;
content:"GET";
http.host;
content:"google.com"; fast_pattern; depth:10; endswith;
http.header_names;
content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a|";
content:!"Accept-Encoding";
content:!"Referer";
Raw source ET MALWARE Win32/Vflooder.C Connectivity Check · 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Vflooder.C Connectivity Check";
    flow:established,to_server;
    urilen:1;
    http.method;
    content:"GET";
    http.host;
    content:"google.com"; fast_pattern; depth:10; endswith;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a|";
    content:!"Accept-Encoding";
    content:!"Referer";
    classtype:trojan-activity;
    sid:2021337; rev:5;
    metadata:created_at 2015_06_24, malware_family Win32_Vflooder_C, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_14;
)

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