ET MALWARE Windows Command Prompt OUTBOUND

Query · suricata

flow:established,to_server;
content:"Microsoft Windows";
content:"[Version|20|"; distance:0;
pcre:"/^\d\.\d\.\d{4}\]\r\n\(C\)\x20Copyright\x20\d{4}(\x2d\d{4})?\x20Microsoft Corp(:?\.|oration)/Ri";
content:"|0d 0a 0d 0a|C|3a 5c 3e|"; fast_pattern; distance:0;
isdataat:!2,relative;
Raw source ET MALWARE Windows Command Prompt OUTBOUND · 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 tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Windows Command Prompt OUTBOUND";
    flow:established,to_server;
    content:"Microsoft Windows";
    content:"[Version|20|"; distance:0;
    pcre:"/^\d\.\d\.\d{4}\]\r\n\(C\)\x20Copyright\x20\d{4}(\x2d\d{4})?\x20Microsoft Corp(:?\.|oration)/Ri";
    content:"|0d 0a 0d 0a|C|3a 5c 3e|"; fast_pattern; distance:0;
    isdataat:!2,relative;
    classtype:trojan-activity;
    sid:2018885; rev:2;
    metadata:created_at 2014_08_04, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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