You may use following Windows script host JavaScript code (example.js):

// Configuration
 
// Local path to download to (keep trailing slash)
var LOCALPATH = "c:\\downloaded\\";
// Remote path to search in (keep trailing slash)
var REMOTEPATH = "/home/user/";
// Mask of files to search for
var FILEMASK = "*.*";
// Session to connect to
var SESSION = "session";
// Path to winscp.com
var WINSCP = "c:\\program files\\winscp\\winscp.com";
 
var filesys = WScript.CreateObject("Scripting.FileSystemObject");
var shell = WScript.CreateObject("WScript.Shell");
   
var logfilepath = filesys.GetSpecialFolder(2) + "\\" + filesys.GetTempName() + ".xml";
 
var exec;
 
// run winscp to get list of file in the remote directory into XML log
exec = shell.Exec("\"" + WINSCP + "\" /log=\"" + logfilepath + "\"");
exec.StdIn.Write(
    "option batch abort\n" +
    "open \"" + SESSION + "\"\n" +
    "ls \"" + REMOTEPATH + FILEMASK + "\"\n" +
    "exit\n");
 
// wait until the script finishes
while (!exec.StdOut.AtEndOfStream)
{
    WScript.Echo(exec.StdOut.ReadAll());
}
 
if (exec.ExitCode != 0)
{
    WScript.Echo("Error retrieving list of files");
    WScript.Quit(1);
}
 
// look for log file
var logfile = filesys.GetFile(logfilepath);
 
if (logfile == null)
{
    WScript.Echo("Cannot find log file");
    WScript.Quit(1);
}
 
// parse XML log file
var doc = new ActiveXObject("MSXML2.DOMDocument");
doc.async = false;
doc.load(logfilepath);
 
doc.setProperty("SelectionNamespaces", 
    "xmlns:w='http://winscp.net/schema/session/1.0'");
 
var nodes = doc.selectNodes("//w:file");
 
// find the latest file
var filenameLatest = null;
var modificationLatest = null;
for (var i = 0; i < nodes.length; ++i)
{
    var filename = nodes[i].selectSingleNode("w:filename/@value");
    var modification = nodes[i].selectSingleNode("w:modification/@value");
    if ((filename != null) &&
        (filename.value != ".") &&
        (filename.value != "..") &&
        (modification != null))
    {
        // can compare timestamps stringwise
        if ((modificationLatest == null) ||
            (modificationLatest < modification.value))
        {
            modificationLatest = modification.value;
            filenameLatest = filename.value;
        }
    }
}
 
// no file in the log
if (filenameLatest == null)
{
    WScript.Echo("No file found");
    WScript.Quit(0);
}
 
// run winscp to download the latest file
exec = shell.Exec("\"" + WINSCP + "\"");
exec.StdIn.Write(
    "option batch abort\n" +
    "option confirm off\n" +
    "open \"" + session + "\"\n" +
    "get \"" + REMOTEPATH + filenameLatest + "\" \"" + LOCALPATH + "\"\n" +
    "exit\n");
 
// wait until the script finishes
while (!exec.StdOut.AtEndOfStream)
{
    WScript.Echo(exec.StdOut.ReadAll());
}
 
if (exec.ExitCode != 0)
{
    WScript.Echo("Error downloading " + filenameLatest);
    WScript.Quit(1);
}

Run the script with command:

cscript /nologo example.js

• Guide to scripting/automation.