Minimum scan engine version needed: 8.500

Pattern file needed: 5.499.00

Pattern release date: Aug 25, 2008

Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.

Solution:

Note: To fully remove all associated malware, perform the clean solutions for the following:

• TROJ_RENOS.ADX

Terminating the Malware Program

This procedure terminates the running malware process.

1. Open Windows Task Manager.
   • On Windows 98 and ME, press
   CTRL+ALT+DELETE
   • On Windows NT, 2000, XP, and Server 2003, press
   CTRL+SHIFT+ESC, then click the Processes tab.
2. In the list of running programs*, locate the process:
   rhcpu4j0etu4.exe
3. Select the malware process, then press either the End Task or the End Process button, depending on the version of Windows on your computer.
4. To check if the malware process has been terminated, close Task Manager, and then open it again.
5. Close Task Manager.

On computers running all Windows platforms, if the process you are looking for is not in the list displayed by Task Manager or Process Explorer, continue with the next solution procedure, noting additional instructions. If the malware process is in the list displayed by either Task Manager or Process Explorer, but you are unable to terminate it, restart your computer in safe mode.

Removing Autostart Entries from the Registry

This solution deletes/modifies registry keys/entries added/modified by this malware. Before performing the steps below, make sure you know how to back up the registry and how to restore it if a problem occurs. Refer to this Microsoft article for more information about modifying your computer's registry.

1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>
   Windows>CurrentVersion>Run
   
3. In the right panel, locate and delete the entry:
   
   • SMrhcpu4j0etu4 = "%Program Files%\rhcpu4j0etu4\rhcpu4j0etu4.exe"
     
   (Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)

Removing Other Malware Entries from the Registry

1. Still in Registry Editor, in the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>
   Windows>CurrentVersion>Uninstall>rhcpu4j0etu4
   
2. In the right panel, locate and delete the entry:
   
   • DisplayName = "AntivirXP08"
     
   • UninstallString = "%Program Files%\rhcpu4j0etu4\uninstall.exe"
     
3. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE
   
4. Still in the left panel, locate and delete the key:
   
   • rhcpu4j0etu4
     
5. Close Registry Editor.

Deleting the Malware Folders

1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
2. In the Named input box, type:
   
   • Antivirus XP 2008
3. In the Look In drop-down list, select My Computer, then press Enter.
4. Once located, select the file then press SHIFT+DELETE.
5. Repeat steps 2-4 for the following file:
• rhcpu4j0etu4

Deleting the Malware Files

1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
2. In the Named input box, type:
   
   • Antivirus XP 2008.lnk
3. In the Look In drop-down list, select My Computer, then press Enter.
4. Once located, select the file then press SHIFT+DELETE.
5. Repeat steps 2-4 for the following file(s):
• Antivirus XP 2008\License Agreement.lnk
• Antivirus XP 2008\Uninstall.lnk
• How to Register Antivirus XP 2008.lnk
• Register Antivirus XP 2008.lnk
• rhcpu4j0etu4\database.dat
• rhcpu4j0etu4\license.txt
• rhcpu4j0etu4\MFC71.dll
• rhcpu4j0etu4\MFC71ENU.DLL
• rhcpu4j0etu4\msvcp71.dll
• rhcpu4j0etu4\msvcr71.dll
• rhcpu4j0etu4.exe.local
• rhcpu4j0etu4\Uninstall.exe

Important Windows ME/XP Cleaning Instructions

Users running Windows ME and XP must disable System Restore to allow full scanning of infected computers.

Users running other Windows versions can proceed with the succeeding solution set.

Running Trend Micro Antivirus

If you are currently running in safe mode, please restart your computer normally before performing the following solution.

Scan your computer with Trend Micro antivirus and delete files detected as TROJ_FAKEALER.HO. To do this, Trend Micro customers must download the latest virus pattern file and scan their computer. Other Internet users can use HouseCall, the Trend Micro online virus scanner.

Trend Micro offers best-of-breed antivirus and content-security solutions for your corporate network, small and medium business, mobile device or home PC.

For additional information about this threat, see:
Overview
Technical Details

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