Threat Encyclopedia

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.

• For Windows Vista and Windows 7 users

1. Restart your computer.
2. Press F8 after the Power-On Self Test (POST) routine is done. If the Advanced Boot Options menu does not appear, try restarting and then pressing F8 several times after the POST screen is displayed.
3. On the Advanced Boot Options menu, use the arrow keys to select the Safe Mode option, and then press Enter.

To delete the registry value this malware created:

1. Open Registry Editor. To do this, click Start>Run, type regedit in the text box provided, then press Enter.
2. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>0
3. In the right panel, locate and delete the entry:
   2500 = "3"
4. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>1
5. In the right panel, locate and delete the entry:
   2500 = "3"
6. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>2
7. In the right panel, locate and delete the entry:
   2500 = "3"
8. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>3
9. In the right panel, locate and delete the entry:
   2500 = "3"
10. In the left panel of the Registry Editor window, double-click the following:
    HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>4
11. In the right panel, locate and delete the entry:
    2500 = "3"
12. In the left panel of the Registry Editor window, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Internet>Explorer>Main
13. In the right panel, locate and delete the entry:
    NoProtectedBanner = "1"
14. Close Registry Editor.

To restore the registry value this malware/grayware modified:

1. Open Registry Editor. Click Start>Run, type REGEDIT in the text box provided, and then press Enter.
2. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>0
3. In the right panel, locate the registry value:
   1609 = "0"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   1609 = "1"
5. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>1
6. In the right panel, locate the registry value:
   1609 = "0"
7. Right-click on the value name and choose Modify. Change the value data of this entry to:
   1609 = "1"
8. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>2
9. In the right panel, locate the registry value:
   1609 = "0"
10. Right-click on the value name and choose Modify. Change the value data of this entry to:
    1609 = "1"
11. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>3
12. In the right panel, locate the registry value:
    1609 = "0"
13. Right-click on the value name and choose Modify. Change the value data of this entry to:
    1609 = "1"
14. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>4
15. In the right panel, locate the registry value:
    1609 = "0"
16. Right-click on the value name and choose Modify. Change the value data of this entry to:
    1609 = "1"
17. Close Registry Editor.

To delete malware/grayware files:

1. Search for the following files:
   
   • {All User's Profile}\lsass.exe
   • {All User's Profile}{random}.pad
   • %User Startup%\ctfmon.lnk
   
   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.