Windows Problems Help Center

Tuesday, October 21, 2014

Remove Ransom:Win32/Crowti.A Completely From the Computer

Brief Introduction about Ransom:Win32/Crowti.A


Ransom:Win32/Crowti.A  is an extremely dangerous Trojan horse which is listed in the top ten of ransomware. This threat can be downloaded by other malware, such as TrojanDownloader:Win32/Onkods or TrojanDownloader:Win32/Upatre. It can also be downloaded when you click on a link in a spam email, infected files and drivers, or form hacked websites like game sites and porn sites, corrupt content and so on. 

Once this Ransom:Win32/Crowti.A is installed on your computer, it will change the computer system registry entries and system files. It will run automatically and immediately on your computer without your permission. Ransom:Win32/Crowti.A can freeze your all computer function and display a lock screen state that all your files on the computer are encrypted. You are required to pay for the ransom to get the key to recover your files. If you don't pay the money in time, it will increase the ransom. 

This ransomware encrypts the files on your PC and directs you to a webpage with instructions on how to unlock them. It asks you to make a payment using bitcoins. The ransom or "lock" screen can use the name CryptoDefense or CryptoWall. Just like the screenshot as below:




It is not recommended you pay the fine. There is no guarantee that paying the ransom will give you access to your files. It is suggested to remove this Trojan immediately from your computer to stop the virus continue to lock your files. 

Ransom:Win32/Crowti.A Removal Guide


Guide 1: To manually delete all its related items like the steps showed below

Step 1: Restart computer in safe mode.  

Keep pressing F8 key before Windows interface launches. When Windows Advanced Options menu turns up, select Safe Mode with Networking and tap Enter key.

Step 2: End all running process in Task Manager 

Press Ctrl+Alt+Del together to open Task Manager -> click on processes and tick Processes from all users box -> click on End Process to end all processes

Step 3: Delete the Trojan program from Uninstall a program in Control Panel

Open Start menu and choose Control Panel -> select Uninstall a program -> choose the Trojan program and right click the Uninstall button on your right to delete it

Step 4: Open Control Panel from Start menu and search for Folder Options. 
When Folder Options window opens, click on its View tab, tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then press OK.

Step 5: Remove all entries below in Registry Editor:

Press Windows+R to launch Run…-> type Regedit into Open box and click OK to open Registry Editor-> find out all registry entries above and delete them



HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Ransom:Win32/Crowti.A " = "%AppData%\<random>.exe"
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "Ransom:Win32/Crowti.A " = "%AppData%\<random>.exe"

Guide 2: To safely and automatically uninstall it with SpyHunter

SpyHunter is a real-time and effective antivirus. Though you have had a safeguard before, it can still be installed as an assistant one. Then, your computer will have double security.

A: At first, boot your computer into Safe Mode with Networking.

To perform this procedure, please restart your computer and keep pressing F8 key until Windows Advanced Options menu shows up, then using arrow key to select “Safe Mode with Networking” from the list and press ENTER to get into that mode.

safe mode with networking

B: Follow the below guide to continue.

Step 1: Press the following icon to download SpyHunter.



Step 2: Get it saved in your computer and click the Run choice to install it step by step. 


Step 3: Click Finish then you can use it to scan your computer to find out potential threats by pressing Start New Scan.


Step 4:Tick Select All and then Remove to delete all reported threat.

If you are still worried about the left over of Ransom:Win32/Crowti.A and want to clean all the unwanted registry entries,  or want to uninstall other specific programs, it is recommended to use Perfect Uninstaller. 

Guide to unneeded applications and speed up PC with Perfect Uninstaller


Perfect Uninstaller is a powerful uninstall tool which can completely remove Adobe, Aol Toolbar, Avast, AVG, ESET NOD32, Internet Explorer 8, McAfee, Microsoft Office, Nero 7, Norton, ESET NOD32 and much more difficult to completely uninstall applications. It is better and easier way for you to completely and safely uninstall any unneeded or corrupt application that standard Windows Add/Remove applet can't remove.

A: At first, boot your computer into Safe Mode with Networking.

To perform this procedure, please restart your computer and keep pressing F8 key until Windows Advanced Options menu shows up, then using arrow key to select “Safe Mode with Networking” from the list and press ENTER to get into that mode.

safe mode with networking

B: Follow the below guide to continue.

Step 1. Install and launch Perfect Uninstaller on your PC.

Perfect Uninstaller install

Step 2.  Select "Run" to download and install Perfect Uninstaller.

run and save file

Step 3. After completely install, you can run the Perfect Uninstaller programs and see all your installed programs details.
Program Details

 Step 4. Choose the programs that you want to uninstall, click “Next” to proceed.


 Step 5. Perfect Uninstaller is scanning your PC for associated entries. Click “Next” to remove them.

uninstall_step3

uninstall_step4
uninstall_step5


Conclusion: Ransom:Win32/Crowti.A can be very destructive. It compromises your computer and also your privacy. Please don’t wait until it has caused unalterable damages.Manual removal is complex and risky task, as it refers to key parts of computer system, and is recommended only for advanced users.  You can Download Perfect Uninstaller to help you uninstall unneeded applications and registry files that the Standard Add /Remove Program can't completely uninstall.

Download SpyHunter to block and remove it automatically and safely now.


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