ET MALWARE BunnyLoader 3.0 Echo Checkin

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/^\/[A-Za-z0-9]{12,14}/";
content:"/gate.php?hostname|3d|";
content:"system|3d|";
content:"arch|3d|";
content:"cecho|3d|";
content:"enc_cecho|3d|"; fast_pattern;
target:src_ip;
Raw source ET MALWARE BunnyLoader 3.0 Echo Checkin · 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 BunnyLoader 3.0 Echo Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\/[A-Za-z0-9]{12,14}/";
    content:"/gate.php?hostname|3d|";
    content:"system|3d|";
    content:"arch|3d|";
    content:"cecho|3d|";
    content:"enc_cecho|3d|"; fast_pattern;
    reference:url,twitter.com/ViriBack/status/1757953408747569644;
    reference:md5,194118c43c65faad06bf5ff6cd9b52a2;
    classtype:trojan-activity;
    sid:2050891; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, created_at 2024_02_15, deployment Perimeter, malware_family BunnyLoader, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_15;
    target:src_ip;
)

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