Trojan.Encoder.6491 Removal Tutorial For Windows Computer


What do you know about Trojan.Encoder.6491?

The tedious name of this Trojan.Encoder.6491 virus hides an interesting story. The malware is the first encryption Trojan infection which is written in the Google's Go programming language (a.k.a. Golang) that was revealed to the public back in year 2009. This Trojan was detected in the month of October 2016 and it is reported to masquerade as a security update for Microsoft Windows computers. The payload of this threat is known to use the name of 'Windows_Security.exe'.

Trojan.Encoder.6491 may be delivered to the users PC as a spam email which features the logo of Microsoft. These junk messages may resemble the pattern of which is an official support page for the Windows system users. That way the bogus 'Windows_Security.exe' update might look legit to some machine users. The malware Utilizes the Multi-Threading and takes the advantage of Multi-Core Processors.

Although, the malware researchers report that this Trojan.Encoder.6491 virus scans the infected computer for 140 types of data containers and then lock the files stored on the connected drives. Needless to say, documents for your work, databases, and family photos are more than likely to be encrypted by the Trojan. It is likely to disrupt the operation of the server networks and specialized the program for a prolonged period. The developers of Trojan.Encoder.6491 designed it to avoid the encryption of objects in the following directories:

  • temp
  • winnt
  • AppData
  • Boot
  • System Volume Information
  • Windows
  • Program Files
  • Program Files (x86)
  • Recycle.Bin
  • ProgramData

Trojan.Encoder.6491: Not Modify the Content of PC Folders

Furthermore, this Trojan is similar to the Kostya Ransomware and the KillerLocker Ransomware. The security analysts note that the threat will not encode the data in folders which support the operating system and allow users to deliver the payment from the infected system. The computer files and data that are modified by this Trojan.Encoder.6491 virus can be recognized easily. It uses the base64 encoding to alter the file names and appends '.enc' extension to each and every affected data containers. For example, 'luke_wright_vip.doc' will be to altered to 'luke_wright_vip.doc.enc'.

The ransom message is packed as a 'instructions.html' and it is loaded by the malware in default web browser automatically. The PC files and data are encrypted with the strong AES Cipher, but the decryption is still possible. Trojan.Encoder.6491 threat requires machine users to leave its main executable running onto the computer and pay 0.052300 Bitcoins, which is approximately equal to 330 USD. However, the system security experts do not encourage paying the ransom money, because you don't have a guarantee that a decryption tool will be sent to your machine.

Besides, it is quite possible to decrypt the files that are affected by Trojan.Encoder.6491 virus, but it will cost you nearly as much as following with the terms of this Trojan. The PC users may consider purchasing a commercial license for the decryption key designed to unlock the data and files corrupted by this nasty virus. However, there is a third option available for you is that you can use a trusted and reliable anti-malware tool to eradicate Trojan.Encoder.6491 infection and then use backup images in order to restore your data for free. The backup images allow the machine users to deal with the threats like this Trojan and its related Cerber3 Ransomware effortlessly.

>>Free Download Trojan.Encoder.6491 Scanner<<


How to Remove Trojan.Encoder.6491 from Compromised PC (Manual Steps)

(This guide is intended to help users in following Step by Step instructions in making Windows Safe)

The first step which need to be followed is to Restart Windows PC in Safe Mode

Reboot in Safe Mode (For Windows XP | Vista | Win7)

  1. Restart Computer
  2. Tap on F8 continuously when the PC starts booting and select the option to enter Safe Mode with Networking.

safe mode

For Windows 8/8.1

  1. Press on the Start Button and then Choose Control Panel from the menu option
  2. Users need to opt for System and Security, to select Administrative Tools and then System Configuration.


3.  Next, Click on the Safe Boot option and then choose OK, this will open a pop-up window, next Select Restart Option.

For Windows 10

  1. Start Menu is to be selected to Open it
  2. Press the power button icon which is present in the right corner, this will display power options menu.
  3. Keeping the SHIFT Key pressed on the keyboard, select the restart option. This will reboot Win 10
  4. Now you need to select the Troubleshoot icon, followed by advanced option in the startup Settings. Click on Restart. This will give the option to reboot, now select Enter Safe Mode with Networking.

Step 2. Uninstall Trojan.Encoder.6491 from Task Manager on Windows

How to End the Running Process related to Trojan.Encoder.6491 using Task Manager

  1. Firstly, Open Task Manager by Pressing Ctrl+Shift+Esc in Combination
  2. Next, Click on processes to Find Trojan.Encoder.6491
  3. Now Click and select End Process to terminate Trojan.Encoder.6491.

task manager

Step3: How to Uninstall Trojan.Encoder.6491 from Control Panel on Windows

for Win XP| Vista and Win 7 Users

  1. Click and Select on Start Menu
  2. Now Control Panel is to be selected from the list
  3. Next Click on Uninstall Program
  4. Users need to Choose suspicious program related to Trojan.Encoder.6491 and right clicking on it.
  5. Finally, Select Uninstall option.





For Win 8

  • Click and Select “Charms bar
  • Now Select Settings Option
  • Next Click on Control Panel
  • Select on Uninstall a Program Option and right click on program associated to Trojan.Encoder.6491 and finally uninstall it.



For Windows 10

  1. The first Step is to Click and Select on Start Menu
  2. Now Click on All Apps
  3. Choose Trojan.Encoder.6491 and other suspicious program from the complete list
  4. Now right Click on to select Trojan.Encoder.6491 and finally Uninstall it from Windows 10




Step: 4 How to Delete Trojan.Encoder.6491 Created Files from Registry

  • Open Registry by Typing Regedit in the Windows Search Field and then press on Enter.
  • This will open the registry entries. Now users need to press CTRL + F together and type Trojan.Encoder.6491 to find the entries.
  • Once located, delete all Trojan.Encoder.6491 named entries. If you are unable to find it, you need to look up for it on the directories manually. Be careful and delete only Trojan.Encoder.6491 entries, else it can damage your Windows Computer severely.
HKEY_CURRENT_USER—-Software—–Random Directory. 
HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random


Still having any problem in getting rid of Trojan.Encoder.6491, or have any doubt regarding this, feel free to ask our experts.