How to remove RVHOST.EXE malware

Follow these steps to completely remove this worm:
1-Start>RUN
2-Write CMD
3-In CMD,write "Taskkill /T /IM "RVHOST.EXE"
then open a Notepad Start>RUn
4-Write "NOtepad"
5-in notepad paste these lines below
On Error Resume Next
Set shl = CreateObject("WScript.Shell")
Set fso = CreateObject("scripting.FileSystemObject")
shl.RegDelete "HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Policies\System\DisableRegistryTools"
shl.RegDelete "HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Policies\System\DisableTaskMgr"
shl.RegDelete
6- save the notepad as "Enable.VBS" and the change the file type to "All"
7-double click "Enable.VBS"
8-now Start>Run. Write "Regedit" in it and press enter
9- Do the following changes in Registy

In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>
Windows>CurrentVersion>Run
In the right panel, locate and delete the entry:
Yahoo Messengger = "%System%\RVHOST.exe"
(Note: %System% is the Windows system folder, which is usually
C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, and C:\Windows\System32 on Windows XP and Server 2003.)-->
Removing Other Entry from the Registry

Still in Registry Editor, in the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>
CurrentVersion>Policies>Explorer
In the right panel, locate and delete the entry:
NofolderOptions = "1"
Restoring Modified Entries from the Registry

Still in Registry Editor, in the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>
CurrentVersion>Winlogon
In the right panel, locate the entry:
Shell = "Explorer.exe RVHOST.exe"
Right-click on the value name and choose Modify. Change the value data of
this entry to:
Explorer.exe
In the right panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>
Services>Schedule
In the right panel, locate the entry:
NextAtJobId = "2"
Right-click on the value name and choose Modify. Change the value data of
this entry to:
1
Close Registry Editor.
Deleting the Malware File(s)

Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
In the Named input box, type:
AT1.JOB
In the Look In drop-down list, select My Computer, then press Enter.
Once located, select the file then press SHIFT+DELETE.
Note: AT1.JOB is a Sheduled Task so you can find this in C:\WINDOWS

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