9 Step to Clean Yahoo Messenger Virus

Yahoo Messenger virus can update your antivirus program like by downloading some files from websites that have been determined. Not be denied, for even fairly difficult to remove.

Check out 9 steps to clean the most vicious viruses and most disturbing in the beginning of the year 2010 according to analysts viruses from Vaksincom, Adang Jauhar Taufik: 

1.   1. Disconnect your computer from Internet

2. Change the name of the file [C: \ Windws \ system32 \ msvbvm60.dll] to [xmsvbvm60.dll] to prevent the virus reactivation during the cleaning process.

3. Should do the cleaning by using the Tools Windows Live CD Mini PE this is due to some master files and file rootkits masquerading as services and drivers difficult to delete these files will be hidden by the virus.

Then boot the computer using software Mini PE Live CD. After deleting some files that the parent virus by:

a. Click the [Mini PE2XT]
b. Click the [Programs]
c. Click the [File Management]
d. Click the [Windows Explorer]
e. Then delete the following files:
    -. C: \ Windows \ System32
    -. WMI% xxx.exe, where xxx show random characters (example: wmispqd.exe, wmisrwt.exe, wmistpl.exe, atu wmisfpj.exe) with file sizes vary depending on the variant that infects the target computer.
    -. % xxx%. exe @, where the% xxx% showing random characters (example: qxzv85.exe @) with sizes varying depending on the variant that infects.
    -. secupdat.dat
    -. C: \ Documents and Settings \% user% \% xx%. Exe, where xx is a random character (example: rllx.exe) with a file size of about 6 kb or 16 kb (depending on the variant that infects).
    -. C: \ Windows \ System32 \ drivers
    -. Kernelx86.sys
    -. % xx%. sys, where xx is a random character who has a size of about 40 KB (example: mojbtjlt.sys or cvxqvksf.sys)
    -. Ndisvvan.sys
    -. krndrv32.sys
    -. C: \ Documents and Settings \% user% \ secupdat.dat
    -. C: \ Windows \ INF
    -. netsf.inf
    -. netsf_m.inf

4. Delete registry that changed was made by the virus, by using "Avast! RegistryEditor", how: 
  
a. Click the [Mini PE2XT] 
b. Click the [Programs] 
c. Click the [Registry Tools] 
d. Click [Avast! Registry Editor] 
e. If the confirmation screen appears Kelik button "Load ....." 
f. Then delete the registry: 

LOCAL_MACHINE_SOFTWARE ü \ microsoft \ windows \ currentverson \ Run \ \ ctfmon.exe 
LOCAL_MACHINE_SYSTEM ü \ ControlSet001 \ Services \ \ kernelx86 
LOCAL_MACHINE_SYSTEM ü \ CurrentControlSet \ Services \ \ kernelx86 
LOCAL_MACHINE_SYSTEM ü \ CurrentControlSet \ Services \ \ passthru 
LOCAL_MACHINE_SOFTWARE ü \ Microsoft \ Windows NT \ CurrentVersion \ Image File Execution Options \ ctfmon.exe 
LOCAL_MACHINE_SOFTWARE ü \ microsoft \ Windows NT \ CurrentVersion \ winlogon 
§ Change the string value to be Userinit = userinit.exe, 
LOCAL_MACHINE_SOFTWARE ü \ microsoft \ Windows NT \ CurrentVersion \ winlogon 
§ Change the string value Shell = Explorer.exe becomes 
LOCAL_MACHINE_SYSTEM ü \ ControlSet001 \ Services \ \% xx% 
LOCAL_MACHINE_SYSTEM ü \ CurrentControlSet \ Services \ \% xx% 
LOCAL_MACHINE_SYSTEM ü \ ControlSet002 \ Services \ SharedAccess \ Parameters \ FirewallPolicy \ DomainProfile \ AuthorizedApplications \ List \ \ C: \ windows \ system32 \% file_induk_virus%. exe (example: wmistpl.exe) 
LOCAL_MACHINE_SYSTEM ü \ ControlSet002 \ Services \ SharedAccess \ Parameters \ FirewallPolicy \ StandardProfile \ AuthorizedApplications \ List \ \ C: \ windows \ system32 \% file_induk_virus%. exe (example: wmistpl.exe) 

Note:% xx% showing random characters, this key is made to run the file. SYS which has the size of 40 KB which is in the directory [C: \ Windows \ system32 \ drivers \] 

5. Restart the computer, restore the remaining registry that changed by the virus to copy the following script in notepad and then save with the name repair.inf. Execute the following manner: right-click repair.inf | click install 

        [Version] 

Signature = "$ Chicago $" 

Provider = Vaksincom Oyee 

  

[DefaultInstall] 

AddReg = UnhookRegKey 

DelReg = del 

  

[UnhookRegKey] 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ batfile \ shell \ open \ command ,,,"""% 1 ""% * " 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ comfile \ shell \ open \ command ,,,"""% 1 ""% * " 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ exefile \ shell \ open \ command ,,,"""% 1 ""% * " 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ piffile \ shell \ open \ command ,,,"""% 1 ""% * " 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ regfile \ shell \ open \ command,,, "regedit.exe"% 1 "" 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ scrfile \ shell \ open \ command ,,,"""% 1 ""% * " 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon, Shell, 0, "Explorer.exe" 

HKEY_LOCAL_MACHINE \ software \ microsoft \ ole, EnableDCOM, 0, "Y" 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Security Center, AntiVirusDisableNotify, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Security Center, FirewallDisableNotify, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Security Center, AntiVirusOverride, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Security Center, FirewallOverride, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Control \ LSA, restrictanonymous, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet002 \ Control \ LSA, restrictanonymous, 0x00010001, 0 

HKLM, SYSTEM \ CurrentControlSet \ Control \ LSA, restrictanonymous, 0x00010001, 0 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Advanced \ Folder \ SuperHidden, CheckedValue, 0x00010001, 0 

SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Advanced \ Folder \ SuperHidden, DefaultValue, 0x00010001, 0 

SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Advanced \ Folder \ SuperHidden, UncheckedValue, 0x00010001, 1 

  

[del] 

HKCU, Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ System, DisableRegistryTools 

HKCU, Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ System, DisableCMD 

HKCU, Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ Explorer, NoFolderOptions 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run, ctfmon.exe 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Services \ kernelx86 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet002 \ Services \ kernelx86 

HKLM, SYSTEM \ CurrentControlSet \ Services \ kernelx86 

HKLM, SYSTEM \ CurrentControlSet \ Services \ mojbtjlt 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Services \ mojbtjlt 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet002 \ Services \ mojbtjlt 

HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Services \ Passthru 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows NT \ SystemRestore 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows \ windowsupdate, DoNotAllowXPSP2 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Policies \ Microsoft \ Windows \ windowsupdate 

HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Image File Execution Options \ ctfmon.exe 

6. Windows registry fix to restore the computer to boot to "safe mode with command prompt" to download the file FixSafeBoot.reg (Windows XP) at the following address and then run the file the following manner:

o Click the [Start]
o Click [Run]
o Type Regedit.exe and click the [OK]
o On the "Registry Editor", click the menu [File | Import]
o Determine the file. REG you created new
o Click the [Open]

7. Delete temporary files and temporary Internet files. Please use the tools ATF-Cleaner. Download these tools here.

8. Restore back to the host file in Windows that has been changed by the virus. You can use tools Hoster, please download at thefollowing address.

Click the [Restore MS Hosts File], to restore the Windows hosts file.

9. For optimal cleaning and prevent re-infection, anti-virus scan with up-to-date and was able to detect this virus.