ET MALWARE Cryptowall 2.0 DL URI Struct Oct 2 2014

Query · suricata

flow:to_server,established;
http.request_line;
content:"GET /blog/"; depth:10;
pcre:"/^[a-z0-9]+\x20HTTP/R";
http.user_agent;
pcre:"/(?:MSIE|rv\x3a11\.0)/";
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:37;
Raw source ET MALWARE Cryptowall 2.0 DL URI Struct Oct 2 2014 · 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 Cryptowall 2.0 DL URI Struct Oct 2 2014";
    flow:to_server,established;
    http.request_line;
    content:"GET /blog/"; depth:10;
    pcre:"/^[a-z0-9]+\x20HTTP/R";
    http.user_agent;
    pcre:"/(?:MSIE|rv\x3a11\.0)/";
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:37;
    reference:url,malware-traffic-analysis.net/2014/10/01/index.html;
    classtype:trojan-activity;
    sid:2019341; rev:4;
    metadata:created_at 2014_10_02, performance_impact Moderate, signature_severity Major, updated_at 2024_04_08;
)

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