ProcessExtensions.cs

public static class ProcessExtensions
{
    public static bool IsWindowsService(this Process process)
    {
        return process.GetParent().ProcessName == "services";
    }

    public static Process GetParent(this Process process)
    {
        var parentPid = 0;
        var hnd = Kernel32.CreateToolhelp32Snapshot(Kernel32.Th32CsSnapprocess, 0);

        if (hnd == IntPtr.Zero) return null;

        var processInfo = new Kernel32.Processentry32 { dwSize = (uint)Marshal.SizeOf(typeof(Kernel32.Processentry32)) };

        if (Kernel32.Process32First(hnd, ref processInfo) == false) return null;

        do
        {
            if (process.Id == processInfo.th32ProcessID)
                parentPid = (int)processInfo.th32ParentProcessID;
        }
        while (parentPid == 0 && Kernel32.Process32Next(hnd, ref processInfo));

        return parentPid > 0 ? Process.GetProcessById(parentPid) : null;
    }    
        
    private static class Kernel32
    {
        public const uint Th32CsSnapprocess = 2;

        [StructLayout(LayoutKind.Sequential)]
        public struct Processentry32
        {
            public uint dwSize;
            public uint cntUsage;
            public uint th32ProcessID;
            public IntPtr th32DefaultHeapID;
            public uint th32ModuleID;
            public uint cntThreads;
            public uint th32ParentProcessID;
            public int pcPriClassBase;
            public uint dwFlags;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
            public string szExeFile;
        };

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr CreateToolhelp32Snapshot(uint dwFlags, uint th32ProcessId);

        [DllImport("kernel32.dll")]
        public static extern bool Process32First(IntPtr hSnapshot, ref Processentry32 lppe);

        [DllImport("kernel32.dll")]
        public static extern bool Process32Next(IntPtr hSnapshot, ref Processentry32 lppe);
    }
}

Program.cs

public class Program
{
    public static void Main(string[] args)
    {
        ...
        logProvider.LogToConsole = !System.Diagnostics.Process.GetCurrentProcess().IsWindowsService();
        ...
    }
}