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Monday, April 7, 2014

Can I Decrypt the Files Encrypted by CryptoDefense? - How to Remove CryptoDefense?

 What is CryptoDefense?

“excel file cannot open  because the file format or file extension is not valid .verify that the file has not been corrupted  and that the file extension matches the format of the file. I can’t even open the pdf files.”

CryptoDefense is classified as a ransomware that it created to encrypt your files. If you want your files back, you are required to pay a ransom range from 500$~1000$. Like to crytolocker, it is a money collector by blackmailing victims to pay for the key to get their encrypted files back. CryptoDefense is not like crytolocker. It doesn’t replace the desktop image, references a different tor site and has a code to get to the tor site. It calls itself CryptoDefense, popping up a text box staring what to do. If you are paying the ransom, you are risking to lose the money and the files even the virus creator is the only who can decrypt the encrypted files.

How CryptoDefense gets on my computer?

“So I was reading a news story on Reedit that had a link to a live leak video. I opened the link and went to get a 5soda, when I got back the CryptoDefense malware had installed itself.”

You must be confused how CryptoDefense gets on your computer when you have your computer protected by the powerful security tool and the firewall. Because the virus CryptoDefense is designed to create security loopholes in your computer for its safe and easy entry.
Distributed by the hacked sites and the malicious ones
Distributed by the freeware and shareware downloads
Distributed by opening the infected email attachment

Efficient Removal Solution Details

Solution 1: Remove CryptoDefense Manually

Before performing the manual removal of CryptoDefense, reboot your computer and before Windows interface loads, press F8 key constantly. Choose "Safe Mode with Networking” option, and then press Enter key. System will load files and then get to the desktop in needed option.

1. Launch the Task Manager by pressing keys Ctrl+Alt+Del or Ctrl+Shift+Esc at the same time, search for Srv.clickfuse.com processes and right-click to end them.


2. Open Control Panel in Start menu and search for Folder Options. When you’re in Folder Options window, please click on its View tab, check Show hidden files and folders and uncheck Hide protected operating system files (Recommended) and then press OK

3. Get rid of the listed files created by CryptoDefense:
%AllUsersProfile%\ApplicationData\temp\ CryptoDefense.dll
%AllUsersProfile%\ Application Data\roaming\ CryptoDefense.exe

4. Open Registry Editor by navigating to Start Menu, type in Regedit, and then click OK. When you have been in Registry Editor, please remove the following related registry entries:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run CryptoDefense \“[RANDOM CHARACTRERISTIC]”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall CryptoDefense ransomware\Run “[RANDOM CHARACTRERISTIC].exe
HKEY_CURRENT_USER\AppEvents\Schemes\Apps\Explorer\Navigating\Uninstall CryptoDefense \Run “[RANDOM CHARACTRERISTIC].exe”

Solution 2: Remove CryptoDefense automatically (with SpyHunter)

Step A. Download removal tool SpyHunter

1) Click here or the icon below to download SpyHunter automatically.

2) Follow the instructions to install SpyHunter
  spyhunter run

spyhunter setup

spyhunter setup

Step B. Run SpyHunter to block CryptoDefense

Run SpyHunter and click "Malware Scan" button to scan your computer, after detect this unwanted program, clean up relevant files and entries completely.

 spyhunter3 scan

Step C. Restart your computer to take effect.

Friendly Tip:

For most of the computer users, the most POWERFUL antivirus program Spyhunter is their first choice to get rid of CryptoDefense since manual removal requires expertise and any inappropriate deleting may cause the computer system crash.