BKDR_PCCLIEN.CPM

To delete the registry key this malware/grayware created:

1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>BiosÖ÷°åÖ§³Ö
3. Still in the left panel, locate and delete the key:
   Parameters
4. Again Still in the left panel, locate and delete the key:
   Enum
5. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Control>MediaResources
6. Still in the left panel, locate and delete the key:
   msvideo
7. Close Registry Editor.

To delete the registry value this malware/grayware created:

1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>BiosÖ÷°åÖ§³Ö
3. In the right panel, locate and delete the entry:
   Group = "netsvcs"
4. Again In the right panel, locate and delete the entry:
   Description = "Ö÷°åоƬ×鰲ȫ¹ÜÀí¡£"
5. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>BiosÖ÷°åÖ§³Ö>Parameters
6. In the right panel, locate and delete the entry:
   ServiceDll = "%System%\twain_32.dll"
7. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>BiosÖ÷°åÖ§³Ö>Enum
8. In the right panel, locate and delete the entry:
   0 = "Root\LEGACY_BiosÖ÷°åÖ§³Ö"
9. Close Registry Editor.

To restore registry values this malware/grayware modified:

1. Open Registry Editor. To do this:
   
   • On Windows 2000, XP, and Server 2003:
     Click Start>Run, type REGEDIT in the text box provided, and then press Enter.
   • On Windows Vista and 7:
     Click the Start button, type REGEDIT in the Search input field then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>SvcHost
3. In the right panel, locate the registry value:
   netsvcs = "{random characters}"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   netsvcs = "{random values}"
5. Close Registry Editor.

To manually delete a malware/grayware file from an affected system:

• For Windows 2000, Windows XP, and Windows Server 2003:

1. Right-click Start then click Search....
2. In the left panel, click All Files.
3. In the Named input box, type the following:
   
   • %System%\twain_32.dll
4. In the Look In drop-down list, select My Computer then press Enter.
5. Once located, select the file then press SHIFT+DELETE to delete it.

• For Windows Vista and Windows 7 users:

1. Click Start>Computer.
2. In the Search input box, type the following:
   
   • %System%\twain_32.dll
3. Once located, select the file then press SHIFT+DELETE to delete it.
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.