rule win_winnti_w3 {
    meta:
        author = "Bundesamt fuer Verfassungsschutz"
        source = "https://www.verfassungsschutz.de/download/anlage-2019-12-bfv-cyber-brief-2019-01.txt"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.winnti"
        malpedia_version = "20191207"
        malpedia_sharing = "TLP:WHITE"
        malpedia_license = ""
    strings:
        $a1 = "IPSecMiniPort" wide fullword
        $a2 = "ndis6fw" wide fullword
        $a3 = "TCPIP" wide fullword
        $a4 = "NDIS.SYS" ascii fullword
        $a5 = "ntoskrnl.exe" ascii fullword
        $a6 = "\\BaseNamedObjects\\{B2B87CCA-66BC-4C24-89B2-C23C9EAC2A66}" wide
        $a7 = "\\Device\\Null" wide
        $a8 = "\\Device" wide
        $a9 = "\\Driver" wide
        $b1 = { 66 81 7? ?? 70 17 }
        $b2 = { 81 7? ?? 07 E0 15 00 }
        $b3 = { 8B 46 18 3D 03 60 15 00 }
    condition:
        (6 of ($a*)) and (2 of ($b*))
}