How to remove FileFix Professional (Removal Guide)

  • March 23, 2009
  • Read 31,066 times

What is FileFix Professional?

Skip this and learn how to remove FileFix Professional!

FileFix Professional is ransomware that requires you to purchase it in order to fix files that have been encrypted on your computer. This program is advertised through a Trojan that has a filename of C:\Windows\system32\fpfstb.dll. When you are infected with this Trojan, every time you open a Office document, PDF, etc, it will encrypt the file so that it becomes unreadable by it's normal application. When you try to open these files, this same Trojan will display an alert stating that your file is corrupted and that you should click on the alert in order to fix the file. When you click on this alert, it will automatically download and install FileFix Professional on to your computer. The current text of this alert is:

Windows File Protection

Windows detected that some of your MS Office and media files are corrupted. Click here to download and install recommended file repair application.

When FileFix Professional runs it will scan your computer for encrypted files and then allow you to fix only one of these corrupted files. Unfortunately, if the Trojan is still installed on your computer it would just encrypt it again when you access the document.


  • FileFix Professional 2009 showing corrupted documents
  • Security warning stating your file are corrupt
  • Error when opening a corrupted document


Below is a removal guide that will remove FileFix and the fpfstb.dll Trojan. Unfortunately, it does not fix the files that were encrypted on your computer. While we wait for AV vendors to figure out a way to decrypt your files, I have come up with a convoluted method of fixing your encrypted files. Please use the removal guide below to remove the Trojan and the FileFix program from your computer. Then follow these instructions in order to repair your files:


Julia Wolf from FireEye, has been able to come up with a decryption routine that can be used to repair the files encrypted by FileFix. Using Julia's decryption technique a program was created called Anti FileFix by Bobby, from, that can scan your computer for encrypted files and then decrypt them for you automatically. This program can be downloaded from here:


Anti FileFix Download Link


In order to use the program you should follow these steps:

  1. Run Anti FileFix

  2. When the program opens, click on the Select Folder button and then select the folder you would like to scan. If you wish to scan an entire drive, then select the particular drive letter. When the drive is selected, press the OK button.

  3. At this point you can click on the Scan button in order for the program to scan your computer for encrypted files. This mode does not decrypt these files. On the other hand, if you wish to find and decrypt any files that Anti FileFix finds, then you should click on the Scan and Fix button.

When the files are decrypted, they will be decrypted into a new filename in the same folder with _fixed(1) appended to the original filename. So if the file was named test.doc, the decrypted version will be test_fixed(1).doc. If you just need to decrypt one or two files, then you can continue to use the web decryption tool created by FireEye.

I would like to thank Julia Wolf, from FireEye, for creating the decryption and identification routines and Bobby, from, for creating the bulk decryption scanner.

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding. If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.

This removal guide may appear overwhelming due to the amount of the steps and numerous programs that will be used. It was only written this way to provide clear, detailed, and easy to understand instructions that anyone can use to remove this infection for free. Before using this guide, we suggest that you read it once and download all necessary tools to your desktop. After doing so, please print this page as you may need to close your browser window or reboot your computer.


To terminate any programs that may interfere with the removal process we must first download the Rkill program. Rkill will search your computer for active malware infections and attempt to terminate them so that they wont interfere with the removal process. To do this, please download RKill to your desktop from the following link.


When at the download page, click on the Download Now button labeled iExplore.exe. When you are prompted where to save it, please save it on your desktop.


Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with FileFix Professional and other malware. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and a log file will open. Please review the log file and then close so you can continue with the next step. If you have problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

Do not reboot your computer after running RKill as the malware programs will start again.


At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

Malwarebytes Anti-Malware

Once downloaded, close all programs and Windows on your computer, including this one.


Double-click on the icon on your desktop named mb3-setup-1878.1878- This will start the installation of MBAM onto your computer.


When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.


MBAM will now start and you will be at the main screen as shown below.

Malwarebytes Anti-Malware

We now need to enable rootkit scanning to detect the largest amount of malware that is possible with MalwareBytes. To do this, click on the Settings button on the left side of the screen and you wil be brought to the general settings section.

Now click on the Protection tab at the top of the screen. You will now be shown the settings MalwareBytes will use when scanning your computer.

Malwarebytes Anti-Malware Detection and Protection Settings Page

At this screen, please enable the Scan for rootkits setting by clicking on the toggle switch so it turns green.


Now that you have enabled rootkit scanning, click on the Scan button to go to the scan screen.

Malwarebytes Anti-Malware Scan Screen

Make sure Threat Scan is selected and then click on the Start Scan button. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.


MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

Malwarebytes Anti-Malware Scanning


When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.

MalwareBytes Scan Results

You should now click on the Remove Selected button to remove all the seleted malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.


You can now exit the MBAM program.


Now you should download HitmanPro from the following location and save it to your desktop:


When you visit the above page, please download the version that corresponds to the bit-type of the Windows version you are using.


Once downloaded, double-click on the file named HitmanPro.exe (for 32-bit versions of Windows) or HitmanPro_x64.exe (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.

HitmanPro Start Screen

Now click on the Next button to continue with the scan process.


You will now be at the HitmanPro setup screen. If you would like to install the 30 day trial for HitmanPro, select the Yes, create a copy of HitmanPro so I can regularly scan this computer (recommended) option. Otherwise, if you just want to scan the computer this one time, please select the No, I only want to perform a one-time scan to check this computer option.

Kickstart Setup Options

Once you have selected one of the options, please click on the Next button.


HitmanPro will now begin to scan your computer for infections. When it has finished it will display a list of all the malware that the program found as shown in the image below. Please note that the infections found may be different than what is shown in the image.

MalwareBytes Scan Results

You should now click on the Next button to have HitmanPro remove the detected infections. When it is done you will be shown a Removal Results screen that shows the status of the various infections that were removed. At this screen you should click on the Next button and then if prompted you should click on the Reboot button. If HitmanPro does not prompt you to reboot, please just click on the Close button.

Once your computer has has restarted or you pressed the Close button, you should now be at your Windows desktop.


As many malware and unwanted programs are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector


Your computer should now be free of the FileFix Professional program. If your current security solution allowed this program on your computer, you may want to consider purchasing the full-featured version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic link ed below:

Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help

Malwarebytes Anti-Malware

Purchase the full-featured version of Malwarebytes Anti-Malware, which includes real-time protection, scheduled scanning, and website filtering, to protect yourself against these types of threats in the future!

View Associated FileFix Professional Files

C:\Program Files\FileFix Professional 2009 C:\Program Files\FileFix Professional 2009\unins000.dat C:\Program Files\FileFix Professional 2009\unins000.exe C:\Program Files\FileFix Professional 2009\wizard.exe C:\Program Files\FileFix Professional 2009\wizard.url %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\FileFix Professional 2009.lnk %UserProfile%\Desktop\FileFix Professional 2009.lnk C:\Documents and Settings\All Users\Start Menu\Programs\FileFix Professional 2009 C:\Documents and Settings\All Users\Start Menu\Programs\FileFix Professional 2009\FileFix Professional 2009 on the Web.lnk C:\Documents and Settings\All Users\Start Menu\Programs\FileFix Professional 2009\FileFix Professional 2009.lnk C:\Documents and Settings\All Users\Start Menu\Programs\FileFix Professional 2009\Uninstall FileFix Professional 2009.lnk

File Location Notes:

%UserProfile% refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> for Windows 2000/XP, C:\Users\<Current User> for Windows Vista/7/8, and c:\winnt\profiles\<Current User> for Windows NT.

View Associated FileFix Professional Registry Information

%UserProfile%HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\FileFix Professional 2009_is1

This is a self-help guide. Use at your own risk. can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus,Trojan,Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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