ET MALWARE Novaloader Stage 2 VBS Request

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/cabaco2.txt"; fast_pattern; nocase; endswith;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)";
Raw source ET MALWARE Novaloader Stage 2 VBS Request · 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 Novaloader Stage 2 VBS Request";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/cabaco2.txt"; fast_pattern; nocase; endswith;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)";
    reference:url,www.zscaler.com/blogs/research/novaloader-yet-another-brazilian-banking-malware-family;
    reference:md5,4ef89349a52f9fcf9a139736e236217e;
    classtype:trojan-activity;
    sid:2027289; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_04_29, deployment Perimeter, confidence High, signature_severity Major, tag Novaloader, updated_at 2020_09_17;
)

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