WORM_UTOTI.AUS

To terminate the malware/grayware/spyware process:

1. Scan your computer with your Trend Micro product and take note of the name of the malware/grayware/spyware detected.
2. Open Windows Task Manager. To do this, press CTRL+SHIFT+ESC.
3. View the list of all running programs. To do this:
   • For Windows 2000, XP, Server 2003, Vista, 7 and Server 2008 users, click the Processes tab.
   • For Windows 8, 8.1 and Server 2012 users, click the Details tab.
4. In the list of running programs, locate a malware/grayware/spyware file detected earlier.
5. Select the detected files, then press either the End Task or the End Process button, depending on the version of Windows you are using.
6. Do the same for the remaining detected malware/grayware/spyware files in the list of running programs.
7. To check if the malware/grayware/spyware process has been terminated, close Task Manager, and then open it again.
8. Close Task Manager.

To delete the registry value this malware created:

1. Open Registry Editor. To do this:
   » For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
   » For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
   » For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
2. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CLASSES_ROOT>.ddrv
3. In the right panel, locate and delete the entry:
   (Default) = "exefile"
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:
   ConvertedWallpaper = "%Windows%\doom.jpg"
6. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>WorkgroupCrawler>Shares
7. In the right panel, locate and delete the entry:
   shared = "\Workgroup Documents.exe"
8. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Policies>system
9. In the right panel, locate and delete the entry:
   DisableRegistryTools = 1
10. Again In the right panel, locate and delete the entry:
    ConfirmFileDelete = 0
11. Again In the right panel, locate and delete the entry:
    DisableTaskMgr = 0
12. In the left panel of the Registry Editor window, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Policies>Explorer
13. In the right panel, locate and delete the entry:
    NoFind = 1
14. Again In the right panel, locate and delete the entry:
    NoFolderOptions = 1
15. Again In the right panel, locate and delete the entry:
    NoWelcomeScreen = 1
16. In the left panel of the Registry Editor window, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
17. In the right panel, locate and delete the entry:
    Yahoo Messengger = "%System%\ rundll32.exe"
18. Close Registry Editor.

To restore the registry value this malware/grayware modified:

1. Open Registry Editor.
   » For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
   » For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
   » For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
2. In the left panel, double-click the following:
   HKEY_CLASSES_ROOT>.docx
3. In the right panel, locate the registry value:
   (Default) = "corrupted document"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   (Default) = "Word.Document.12"
5. In the left panel, double-click the following:
   HKEY_CLASSES_ROOT>.mp3
6. In the right panel, locate the registry value:
   (Default) = "Application"
7. Right-click on the value name and choose Modify. Change the value data of this entry to:
   (Default) = "mp3file"
8. In the left panel, double-click the following:
   HKEY_CLASSES_ROOT>.xlsx
9. In the right panel, locate the registry value:
   (Default) = "corrupted document"
10. Right-click on the value name and choose Modify. Change the value data of this entry to:
    (Default) = "Excel.Sheet.12"
11. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Control Panel>Desktop
12. In the right panel, locate the registry value:
    OriginalWallpaper = "%Windows%\doom.jpg"
13. Right-click on the value name and choose Modify. Change the value data of this entry to:
    OriginalWallpaper = ""
14. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advanced
15. In the right panel, locate the registry value:
    Hidden = dword:00000002
16. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Hidden = dword:00000001
17. Again In the right panel, locate the registry value:
    HideFileExt = dword:00000001
18. Right-click on the value name and choose Modify. Change the value data of this entry to:
    HideFileExt = dword:00000000
19. Again In the right panel, locate the registry value:
    ShowSuperHidden = dword:00000000
20. Right-click on the value name and choose Modify. Change the value data of this entry to:
    ShowSuperHidden = dword:00000001
21. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Policies>Explorer
22. In the right panel, locate the registry value:
    NoDriveTypeAutoRun = dword:00000001
23. Right-click on the value name and choose Modify. Change the value data of this entry to:
    NoDriveTypeAutoRun = dword:00000091
24. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>Winlogon
25. In the right panel, locate the registry value:
    Shell = "Explorer.exe  rundll32.exe"
26. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Shell = "Explorer.exe"
27. 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 File name* input box, type the following:
   %Windows%\Tasks\At1.job
3. In the Look In drop-down list, select My Computer then press Enter.
4. Once located, select the file then press SHIFT+DELETE to delete it.
   *Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

1. Open a Windows Explorer window.
   • For Windows Vista, 7, and Server 2008 users, click Start>Computer.
   • For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
2. In the Search Computer/This PC input box, type:
   %Windows%\Tasks\At1.job
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.