ET EXPLOIT_KIT CoolEK Payload Download (9)

Query · suricata

flow:established,to_server;
http.uri;
content:".txt?f="; fast_pattern;
pcre:"/^\d+$/R";
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET EXPLOIT_KIT CoolEK Payload Download (9) · 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 -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT CoolEK Payload Download (9)";
    flow:established,to_server;
    http.uri;
    content:".txt?f="; fast_pattern;
    pcre:"/^\d+$/R";
    http.header_names;
    content:!"Referer|0d 0a|";
    classtype:exploit-kit;
    sid:2016976; rev:12;
    metadata:created_at 2013_06_06, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_28;
)

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