WORM_DELF.QAY

To identify and delete the malware/grayware file:

1. Insert your Windows Installation CD in your CD-rom.
2. Press the restart button of your computer.
3. When prompted, press any key to boot from the CD.
4. When prompted on the Main Menu, type r to enter the recovery console.
   (Note: On Windows 2000, after pressing r, type c to choose the Recovery Console in the repair options screen.)
5. When prompted, type your administrator password to log on.
6. Once logged in, type the drive that contains Windows in the command prompt that appears, then press Enter.
7. Type the drive that contains Windows, then press Enter.
8. Type the following, then press Enter:
   del {malware/grayware path and file name}
9. Repeat the above procedure for all files detected earlier.
10. Type exit to restart the system normally.

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_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
   NvCplDeamon = %System%\drivers>smss.exe
4. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Control Panel>Desktop
5. In the right panel, locate and delete the entry:
   SCRNSAVE.EXE = %System%\logo.scr
6. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Security Center
7. In the right panel, locate and delete the entry:
   FirewallOverride = 1
8. Again In the right panel, locate and delete the entry:
   FirewallDisableNotify = 1
9. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>policies>Explorer
10. In the right panel, locate and delete the entry:
    NoFolderoptions = 1
11. In the left panel of the Registry Editor window, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services>lanmanserver>Shares
12. In the right panel, locate and delete the entry:
    !Film = {hex value}
13. In the left panel of the Registry Editor window, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services>lanmanserver>Shares>Security
14. In the right panel, locate and delete the entry:
    !Film = {hex value}
15. In the left panel of the Registry Editor window, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile
16. In the right panel, locate and delete the entry:
    DisableNotifications = 1
17. Again In the right panel, locate and delete the entry:
    DoNotAllowExceptions = 0
18. Again In the right panel, locate and delete the entry:
    enableFirewall = 0
19. 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>Control Panel>Desktop
3. In the right panel, locate the registry value:
   ScreenSaveTimeOut = 100
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   ScreenSaveTimeOut = {user-defined}
5. Again In the right panel, locate the registry value:
   ScreenSaveActive = 1
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   ScreenSaveActive = 0
7. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advanced
8. In the right panel, locate the registry value:
   Hidden = 0
9. Right-click on the value name and choose Modify. Change the value data of this entry to:
   Hidden = 1
10. Again In the right panel, locate the registry value:
    HideFileExt = 1
11. Right-click on the value name and choose Modify. Change the value data of this entry to:
    HideFileExt = 0
12. Again In the right panel, locate the registry value:
    ShowSuperHidden = 0
13. Right-click on the value name and choose Modify. Change the value data of this entry to:
    ShowSuperHidden = 1
14. Close Registry Editor.

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%\drivers\Cache
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.

To identify and delete AUTORUN.INF files created:

1. Right-click the Start button then choose Search... or Find..., depending on the version of Windows you are running.
2. In the Named input box, type:
   AUTORUN.INF
3. In the Look in: drop-down list, select a drive, then press Enter.
4. Select the file, then open using Notepad.
5. Check if the following lines are present in the file:
   [AutoRun]
   open={malware file name}.scr
   shell\Open\command={malware file name}.scr
6. If the lines are present, delete the file.
7. Repeat steps 3 to 6 for the remaining AUTORUN.INF files in other remaining removable drives.
8. Close Search Results.