ET MALWARE Windows systeminfo Microsoft Windows DOS prompt command exit OUTBOUND

alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Windows systeminfo Microsoft Windows DOS prompt command exit OUTBOUND";
    flow:established,to_server;
    content:"Host Name|3a|";
    content:"OS Name|3a|";
    content:"OS Version|3a|";
    content:"OS Manufacturer|3a|";
    content:"Microsoft Corporation"; distance:0;
    content:"OS Configuration|3a|";
    content:"OS Build Type|3a|";
    content:"Registered Owner|3a|";
    content:"Registered Organization|3a|";
    content:"Product ID|3a|";
    content:"Original Install Date|3a|";
    content:"System Up Time|3a|";
    content:"System Manufacturer|3a|";
    content:"System Model|3a|";
    content:"System type|3a|";
    content:"Processor|28|s|29 3a|";
    reference:md5,a22af4fc7fe011069704a15296634ca6;
    classtype:trojan-activity;
    sid:2019002; rev:1;
    metadata:created_at 2014_08_26, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)