BKDR_AGENT.BCHN

To restart in Safe Mode:

• For Windows 2000 users

1. Restart your computer.
2. Press F8 when you see the Starting Windows bar at the bottom of the screen.
3. Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.

• For Windows XP users

1. Restart your computer.
2. Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
3. Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.

• For Windows Server 2003 users

1. Restart your computer.
2. Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
3. On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.

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>CurrentControlSEt>Services
3. Still in the left panel, locate and delete the key:
   PCRatStact
4. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Active Setup>Installed Components
5. Still in the left panel, locate and delete the key:
   {dfneopro-ujyz-dgfz-jmjs-jbkiapktjdza}
6. 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>SOFTWARE>Microsoft>Active Setup>Installed Components>{dfneopro-ujyz-dgfz-jmjs-jbkiapktjdza}
3. In the right panel, locate and delete the entry:
   stubpath = "%System%\assembly\inbuxzyre.exe"
4. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>PCRatStact
5. In the right panel, locate and delete the entry:
   Type = "12"
6. Close Registry Editor.

To restore the registry value this malware/grayware/spyware modified:

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>Control>Session Manager>SFC
3. In the right panel, locate the registry value:
   ProgramFilesDir = "%Program Files%"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   ProgramFilesDir = "%Program Files%"
5. Again In the right panel, locate the registry value:
   CommonFilesDir = "%Program Files%\Common Files"
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   CommonFilesDir = "%Program Files%\Common Files"
7. Close Registry Editor.

To delete malware/grayware component files:

1. Search for the following files:
   
   • %System%\assembly\inbuxzyre.exe
   • %System%\syslog.dat
   • %User Temp%\42953_res.tmp
   
   Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
2. Once located, select the file then press SHIFT+DELETE to permanently delete the file.
3. Repeat the said steps for all files listed.

To delete the malware/grayware folder:

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:
   
   • %System%\assembly
3. In the Look In drop-down list, select My Computer, then press Enter.
4. Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.