ET MALWARE VoidRay Downloader CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?UID="; fast_pattern;
content:"_"; distance:8; within:1;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
content:!"|0d 0a|Accept|0d 0a|";
Raw source ET MALWARE VoidRay Downloader CnC Activity · 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 VoidRay Downloader CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?UID="; fast_pattern;
    content:"_"; distance:8; within:1;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    content:!"|0d 0a|Accept|0d 0a|";
    reference:md5,082b7a27b2e75bbcde189fab82b0fe72;
    classtype:trojan-activity;
    sid:2031649; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_02_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_23;
)

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