Exterminate It! Antimalware


Known threats:700,086 Last Update:March 16, 12:51


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File: cdnprot.dat

Location of cdnprot.dat and Associated Malware

Check whether cdnprot.dat is present in the following locations:

cdnprot.dat file locations that are Windows version independent:

  • C:\Windows\System32\cdnprot.dat

Windows 2000, Windows XP, Windows Server 2003 specific cdnprot.dat file locations:

  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\91\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\9C\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\48\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\36\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\D25F\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\26\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\31\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\63\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\2B\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\sz3B\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\ss81\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\9\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\1C\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\19\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\C3\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\setup\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\59\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\98\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\52\cdnprot.dat
  • C:\Documents And Settings\USER_NAME\Local Settings\Temp\6B8\cdnprot.dat

Windows Vista, Windows Server 2008, Windows 7, Windows 8 specific cdnprot.dat file locations:

  • C:\Users\USER_NAME\AppData\Local\Temp\91\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\9C\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\48\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\36\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\D25F\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\26\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\31\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\63\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\2B\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\sz3B\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\ss81\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\9\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\1C\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\19\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\C3\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\setup\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\59\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\98\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\52\cdnprot.dat
  • C:\Users\USER_NAME\AppData\Local\Temp\6B8\cdnprot.dat

If you find cdnprot.dat file in any of these locations, your computer is very likely to be infected with the following malware:

IMPORTANT: Malware files can be camouflaged with the same file names as legitimate files. The cdnprot.dat file is associated with malware only if found in the locations listed above.


Different Variations of cdnprot.dat File^

File SizeFile Md5Last Seen
3260D504D2C5CAC83656468A8EA820A174DEJan 31, 2010
2991C8A0308A482492A2ADDFA007201E29F1Mar 11, 2012
32322694556FE2D5D493A8B16C8734A368ABDec 1, 2015
15668D7910052A4A6C16C546852504A12D01Jan 10, 2010
22282E9A11F60E10581F0B951E37172B9B6BJun 9, 2011
16622CA7FA69A8B0C5C3640A1FAB90599268Apr 13, 2010
5376EEA267453D14191C6D7510387F6649E6May 26, 2014
3810A64BFB8E819BEF7D8B93349CDF8C4B42Dec 29, 2011

Why Is It Important to Remove Malware Files?^

It is imperative that you delete malware-associated files as soon as possible because they can be used - or are already being used - to inflict serious damage on your PC, including:

  • Disrupting the normal functioning of the operating system or rendering it completely useless.
  • Hijacking valuable private information (credit card numbers, passwords, PIN codes, etc.)
  • Directing all your Web searches to the same unwanted or malicious sites.
  • Dramatically slowing down your computer.
  • Gaining total control of your PC to spread viruses and trojans and send out spam.

How to Remove cdnprot.dat^

  1. To enable deleting the cdnprot.dat file, terminate the associated process in the Task Manager as follows:
    • Right-click in the Windows taskbar (a bar that appears along the bottom of the Windows screen) and select Task Manager on the menu.
    • In the Tasks Manager window, click the Processes tab.
    • On the Processes tab, select cdnprot.dat and click End Process.
  2. Using your file explorer, browse to the file using the paths listed in Location of cdnprot.dat and Associated Malware.
  3. Select the file and press SHIFT+Delete on the keyboard.
  4. Click Yes in the confirm deletion dialog box.
  5. Repeat steps 2-4 for each location listed in Location of cdnprot.dat and Associated Malware.
  6. Notes:

    • The deletion of cdnprot.dat will fail if it is locked; that is, it is in use by some application (Windows will display a corresponding message). For instructions on deleting locked files, see Deleting Locked Files.
    • The deletion of cdnprot.dat will fail if your Windows uses the NT File System (NTFS) and you have no write rights for the file. Request your system administrator to grant you write rights for the file.

Deleting Locked Files^

You can delete locked files with the RemoveOnReboot utility. You can install the RemoveOnReboot utility from here.

After you delete a locked file, you need to delete all the references to the file in Windows registry.

To delete a locked file:

  1. Right-click on the file and select Send To -> Remove on Next Reboot on the menu.
  2. Restart your computer.

The file will be deleted on restart.

Note: In the case of complex viruses that can replicate themselves, malware files can reappear in the same locations even after you have deleted those files and restarted your computer. Exterminate It! Antimalware can effectively eradicate such viruses from your computer.

To remove all registry references to a cdnprot.dat malware file:

  1. On the Windows Start menu, click Run.
  2. In the Open box, type regedit and click OK. The Registry Editor window opens.
  3. On the Edit menu, select Find.
  4. In the Find dialog box, type cdnprot.dat. The name of the first found registry value referencing cdnprot.dat is highlighted in the right pane of the Registry Editor window.
  5. Right-click the registry value name and select Delete on the menu.
  6. Click Yes in the Confirm Value Delete dialog box.
  7. To delete all other references to cdnprot.dat, repeat steps 4-6.
IMPORTANT: Malware files can masquerade as legitimate files by using the same file names. To avoid deleting a harmless file, ensure that the Value column for the registry value displays exactly one of the paths listed in Location of cdnprot.dat and Associated Malware.