ET MALWARE Win32/Radonskra.B C2 Check-in

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Radonskra.B C2 Check-in";
    flow:established,to_server;
    http.uri;
    content:".php?"; nocase;
    content:"&os=Windows"; nocase;
    content:"&mac="; nocase;
    content:"&lua="; nocase;
    content:"&firewall="; nocase;
    content:"&antivirus="; nocase;
    content:"&antispyware"; nocase;
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"Accept";
    reference:md5,9d6b99e87faa3f7a23adef5031bd598b;
    reference:url,www.microsoft.com/security/portal/threat/encyclopedia/Entry.aspx?Name=Trojan%3aWin32%2fRadonskra.B;
    classtype:command-and-control;
    sid:2023033; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_08_09, deployment Perimeter, malware_family Win32_Radonskra_B, performance_impact Low, signature_severity Major, updated_at 2020_07_27;
)