First step is to download the installation package (you can also use a portable-version) and COM-library site WinSCP and register it:

% WINDIR% \ Microsoft.NET \ Framework \ version \ RegAsm.exe WinSCP.dll / codebase / tlb

Learn more about setting here

Now you can work with it from 1C:  

 //COMPOUND
	Attempt
		
		// Set the connection settings
		sessionOptions = New COMObekt ( "WinSCP.SessionOptions"); // Create an object SessionOptions
		sessionOptions.HostName = "example.com";
		sessionOptions.UserName = "user";
		sessionOptions.Password = "mypassword";
		sessionOptions.SshHostKeyFingerprint = "ssh-rsa 1024 xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx: xx";
		
		
		session = New COMObekt ( "WinSCP.Session"); // Create a Session object
		
		// Parameter must be used if the path register DLL and executable are different
		session.ExecutablePath = "C: \ Program Files (x86) \ WinSCP \ winscp.exe";
		
		// connect
		session.Open (sessionOptions);
	An exception
		Report (OpisanieOshibki ());
		Return;
	KonetsPopytki;
	
	//UNLOADING
	Attempt
		PutVygruzki Obekt.KatalogVygruzki + = '*';
		PutZagruzkiNaFTP = Obekt.KatalogZagruzkiNaFTPServere;
		
		// Upload files
		transferResult = session.PutFiles (PutVygruzki, PutZagruzkiNaFTP);
		
		// Check the result for errors
		transferResult.Check ();
		
		// Process the result of unloading
		For each VygruzhennyyFayl From transferResult.Transfers Cycle
			Report ( "Unloaded file:" + VygruzhennyyFayl.FileName);
			PeremestitFayl (VygruzhennyyFayl.FileName, HranilischeVygruzhennyhFaylov);
		KonetsTsikla;	
	An exception
		Report (OpisanieOshibki ());
	KonetsPopytki;
	
	//LOADING
	Attempt
		PutZagruzki Obekt.KatalogZagruzki = + "\ *";
		PutVygruzkiNaFTP = Obekt.KatalogVygruzkiNaFTPServere;
		
		// Load files from a remote server
		transferResult = session.GetFiles (PutVygruzkiNaFTP, PutZagruzki);
		
		// Check errors
		transferResult.Check ();
		
		// Process the results
		For each ZagruzhennyyFayl From transferResult.Transfers Cycle
			Report ( "Uploaded file:" + ZagruzhennyyFayl.FileName);
			session.RemoveFiles (ZagruzhennyyFayl.FileName); // Remove the already downloaded files
		KonetsTsikla;
		
	An exception
		Report (OpisanieOshibki ());
	KonetsPopytki;		
	
	// Deactivate the connection
	session.Dispose ();

All the necessary files and an example of sharing the attachment processing.

I gave an example of just the basic features that he used. The library is quite a lot of classes and methods, and can be greatly expanded with the need to use opportunities. The manual here

Example with WinSCP on the command line