ET EXPLOIT_KIT Possible PurpleFox EK Framework URI Struct Jpg Request

Query · suricata

flow:established,to_server;
urilen:>60;
http.method;
content:"GET";
http.uri;
content:".jpg"; endswith;
pcre:"/^\/(?!(?:[a-z]{16}|[0-9]{16}))[a-zA-Z0-9]{16}\/[a-zA-Z0-9]{16}\/[a-f0-9]{40}\/[a-zA-Z0-9]+\.jpg$/";
http.host;
content:"rawcdn.githack.com"; fast_pattern;
Raw source ET EXPLOIT_KIT Possible PurpleFox EK Framework URI Struct Jpg Request · 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 -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT Possible PurpleFox EK Framework URI Struct Jpg Request";
    flow:established,to_server;
    urilen:>60;
    http.method;
    content:"GET";
    http.uri;
    content:".jpg"; endswith;
    pcre:"/^\/(?!(?:[a-z]{16}|[0-9]{16}))[a-zA-Z0-9]{16}\/[a-zA-Z0-9]{16}\/[a-f0-9]{40}\/[a-zA-Z0-9]+\.jpg$/";
    http.host;
    content:"rawcdn.githack.com"; fast_pattern;
    classtype:exploit-kit;
    sid:2031466; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_30, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit_Kit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_30;
)

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