I just got Trojan.Cryptdef!gen13 virus on my computer that I have problems to get rid of, even tough I have AVG internet security installed. The virus is constantly detected. I downloaded Malwarebytes and scanned my computer under safe mode, after deleting some potential threats it found, the same virus was still there and didn’t go away. What should I do now? Can someone help me remove the virus?
Trojan.Cryptdef!gen13 is a nasty virus designed by cyber criminals to target Windows users only. It mainly aims at stealing personal information, and on the way of obtaining it. The virus sometimes even manages to crash the corrupted system completely and encrypt user’s documents and photos. Usually this Trojan can use a variety of strategies to creep into a vulnerable PC. And the main two ways are from fishy websites and strange pop-ups. It is suggested users NEVER visit any pornographic web pages because most of them contain viruses and other malware. Besides, don’t click any suspicious pop-up ads even if they are warning about a potential threat to your computer safety, because this is the way to trigger the Trojan.Cryptdef!gen13 virus.
Once Trojan.Cryptdef!gen13 Virus is installed, it immediately starts threatening the attacked computer system’s security by downloading or uploading files, logging keystrokes, encrypting user’s files and slowing down PC performance. It may take a long time at startup or shut down, even when you attempt to open a website, it keeps freezing. Moreover, you may get constant pop-up of advertisements that lure you to download free and unsafe software.whenever the computer is online. Your online activities will be interrupted frequently. As Trojan.Cryptdef!gen13 is categorized as Trojan Horse, it has the ability to keep track of every single keystroke you make on a keyboard and store your recorded data such as your banking information and login password. It leaves your computer open to the cyber criminals so you had better remove it at no costs to avoid money loss issue.
Slow down your PC speed notably.
Add other dangerous Trojan or Spyware to your system secretly.
Allow the hacker to access your entire system.
Collect all your personal information and transfer to a remote hacker.
Destroy critical system files and make PC unstable.
From malicious drive-by-download scripts from corrupted porn and shareware / freeware websites.
Through spam email attachments, media downloads and social networks.
When clicking suspicious pop-ups or malicious links.
Open unknown email or download media files that contain the activation code of the virus.
Note: No matter how the virus accesses your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of Trojan.Cryptdef!gen13 virus, professional manual guide is needed.
Currently many computer users had the same experience that this virus couldn’t be removed by any anti-virus applications. So the manual approach is always required to combat this virus. And here is the step-by-step removal guide for all computer users.
1. End the malicious process from Task Manager.
Once Trojan.Cryptdef!gen13 virus is installed, computer user may notice that CPU usage randomly jumps to 100 percent. At any time Windows always has many running processes. A process is an individual task that the computer runs. In general, the more processes, the more work the computer has to do and the slower it will run. If your system’s CPU spike is constant and remain at a constant 90-95%, users should check from Task Manager and see if there is a suspicious process occupying system resources and then end it immediately.
(The name of the virus process can be random.)
Press Ctrl+Shift+Esc to quickly bring up Task Manager Window：
2. Show hidden files and folders.
Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.
Click the View tab.
Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.
3. Open Registry entries. Find out the malicious files and entries and then delete all.
Attention: Always be sure to back up your PC before making any changes.
a. Press Windows key + R to open Run box. In the “Open” field, type “regedit” and click the “OK” button.
Then a Registry Editor window will pop up as the following picture shows:
b. Search malicious files and registry entries and then remove all of them:
%AllUsersProfile%\[random]
%AppData%\Roaming\Microsoft\Windows\Templates\[random]
%AllUsersProfile%\Application Data\.exe
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\[random]
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Temp
Trojan.Cryptdef!gen13 is defined as Trojan Virus that usually enters your computer by utilizing flaws in your firewall and other vulnerabilities in your security system. The longer it stays on the target system, the more damages it could bring to harm the computer. Being as Trojan virus, it is used by remote hackers to make chaos on computer running with Win 7, Win 8, Win Vista, Win XP operating systems. The virus is responsible for tracking your web surfing activities and collecting sensitive information like credit card details, bank account information, email address and password. Once executed, it drops malicious files on the infected computer and messes up your whole computer. Your system settings may be changed and your homepage and search engine also have been modified to other shady pages without your permission. In a word, Trojan.Cryptdef!gen13 can cause tons of problems on a computer that should be removed as quickly as possible.
Note: If you are not knowledgeable enough to be able to distinguish the location of this virus, or you are afraid of making mistake during the manual removal, please contact experts from Yoocare Online Tech Support for further help.
Published by & last updated on May 2, 2015 2:26 am
Leave a Reply
You must be logged in to post a comment.