ET MALWARE Swizzor-based Downloader - Invalid User-Agent (Mozilla/4.0 (compatible MSIE 7.0 na .NET CLR 2.0.50727 .NET CLR 3.0.4506.2152 .NET CLR 3.5.30729))

Query · suricata

flow:established,to_server;
http.method;
content:"GET"; nocase;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|na|3b 20|.NET CLR 2.0.50727|3b 20|.NET CLR 3.0.4506.2152|3b 20|.NET CLR 3.5.30729)|0d0a|"; fast_pattern; startswith;
Raw source ET MALWARE Swizzor-based Downloader - Invalid User-Agent (Mozilla/4.0 (compatible MSIE 7.0 na .NET CLR 2.0.50727 .NET CLR 3.0.4506.2152 .NET CLR 3.5.30729)) · 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 Swizzor-based Downloader - Invalid User-Agent (Mozilla/4.0 (compatible MSIE 7.0 na .NET CLR 2.0.50727 .NET CLR 3.0.4506.2152 .NET CLR 3.5.30729))";
    flow:established,to_server;
    http.method;
    content:"GET"; nocase;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|na|3b 20|.NET CLR 2.0.50727|3b 20|.NET CLR 3.0.4506.2152|3b 20|.NET CLR 3.5.30729)|0d0a|"; fast_pattern; startswith;
    reference:url,www.cyber-ta.org/releases/malware-analysis/public/2009-07-12-public/ARCHIVE/1247423556.chatter;
    classtype:trojan-activity;
    sid:2009810; rev:10;
    metadata:created_at 2010_07_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_13;
)

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