> VilmaTech Blog > How to Remove JS:Downloader-ZY [Trj], Latest Manual Removal Guide

How to Remove JS:Downloader-ZY [Trj], Latest Manual Removal Guide

What is JS:Downloader-ZY [Trj]

JS:Downloader-ZY [Trj] is one type of malware that can be subdivided as a Trojan infection carrying malevolent codes. PC users have criticized JS:Downloader-ZY [Trj] a lot because it has the capability to trigger damaging activities on the computer that it infects. As a matter of fact, JS:Downloader-ZY [Trj] virus is a hack tool utilized by cyber criminals for illegal subjects. Most commonly this type of Trojan threat can always sneak into a targeted computer without user’s permission or knowledge. The common spreading approach JS:Downloader-ZY [Trj] adopts is exploit kits, such as BlackHole, which are capable of infiltrating user’s computer using found security vulnerabilities. Apart from the basic method, the infection is also skilled in making full use of social engineering tactics in order to propagate its harmful components.

For instance, JS:Downloader-ZY [Trj] virus may be prevalent on malicious websites or other legitimate web pages that have been attacked, such as some P2P (peer-to-peer) file sharing websites. On the other hand, JS:Downloader-ZY [Trj] virus may be diffused by some spam email containing sponsored links or attachments. PC users may also get infected JS:Downloader-ZY [Trj] virus when they download some applications from distrusted Internet resources. When executed, this type of Trojan virus injects its malignant codes into affected computer for the purpose of modifying default Windows configuration. In consequence, JS:Downloader-ZY [Trj] virus could be loaded up automatically whenever Windows is launched due to the modification in MBR (Master Boot Record), one kernel part of system that takes control of operating system’s bootloader. Acting analogously as other Trojan infection like Trojan Horse PSW.Generic11.CIZG (Removal Help), JS:Downloader-ZY [Trj] virus may slow down the performance of Windows via taking up high computing resources. Meanwhile, JS:Downloader-ZY [Trj] virus is often bundled with numerous additional threats that could carry out further harm on compromised machine. In addition, JS:Downloader-ZY [Trj] virus may even open a backdoor for remote hackers, allowing them to make worse results on affected Windows forcibly.

Note: The following manual removal of JS:Downloader-ZY [Trj] virus requires certain PC tech knowledge. If you cannot remove JS:Downloader-ZY [Trj] on your own, you are welcome to contact VilmaTech Certified 24/7 online expert here to resolve your issue properly and completely.

live chat

Remove JS:Downloader-ZY [Trj] Automatically

Major PC users may notice the existence of JS:Downloader-ZY [Trj] virus by having a full scan in their antivirus software programs. However, the infection may come back over and over again after PC reboot or even directly restrict the auto removal by antivirus. Well, tricky as JS:Downloader-ZY [Trj] virus is, it is programmed with advanced rootkit techniques by its developers. Auto removal may have a low chance to get rid of the infection effectively. In this case, it is strongly recommended to utilize the almighty manual approach to clean up all its components from computer.

Remove JS:Downloader-ZY [Trj] Virus Manually

1.Start Windows Task Manager to stop the running process of JS:Downloader-ZY [Trj].

task manager end process

2. Show hidden files related to JS:Downloader-ZY [Trj].

JS:Downloader-ZY [Trj] may hide its codes and files in system once being installed. So you will need to show all hidden files related to JS:Downloader-ZY [Trj] before removing all its components.

  • Click on Start menu.
  • Select Control Panel.

controlp wondows

  • Click on  Appearance and Personalization link.
  • Choose Folder Options.


  • Click on the View tab on Folder Options.


  • Choose the Show hidden files, folders, and drives under the Hidden files and folders category.
  • Enter OK.

Additional steps for Windows 8:

  • Click on Start menu and then choose Windows Explorer icon.


  • In opened Libraries window, click View tab.


  • Select Folder Options.
  • Click View tab.


  • Select Show hidden files, folders, and drives radio button under Hidden files and folders category.

3. Remove files created by JS:Downloader-ZY [Trj] in hard disk.

local disk c
%Documents and Settings%\[UserName]\Application Data\[random]
%AllUsersProfile%\Application Data\.dll
%AllUsersProfile%\Application Data\.exe

4. Remove all registry files of JS:Downloader-ZY [Trj].

  • Go to  Registry Editor. (Click “Start” button and selecting “Run.” Type “regedit” into the box and click “OK.”)
  • Remove all the following registry files of JS:Downloader-ZY [Trj].

registry editor2

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “[RANDOM]”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run “[RANDOM].exe”

Video Guide on How to Backup Windows Registry Entries

In Conclusion:

JS:Downloader-ZY [Trj] has been classified as a dangerous Trojan infection by security experts. According to its harmful attributes, JS:Downloader-ZY [Trj] virus can often sneak into a targeted computer without any permission or knowledge. It may be distributed by compromised websites, spam email or other “free” applications that can be downloaded from unreliable Internet resources. Once being installed, it will typically insert its harmful codes and files into kernel system in order to make modification in Windows registry. As a result, JS:Downloader-ZY [Trj] virus could run automatically on every Windows boot. It may also make affected computer perform sluggishly by secretly taking up large amounts of system resources. At the same time, JS:Downloader-ZY [Trj] may drop and install additional PC malware on targeted machine. This may include related Trojan, worm, keylogger or other potential threats. What is worse, JS:Downloader-ZY [Trj] virus may even open a backdoor contacting a controller connected to remote hackers, and then allow them to access compromised machine freely. It is evident that users are obliged to get rid of JS:Downloader-ZY [Trj] virus timely to avoid unexpected damage and further harm. However, it may easily bypass the detection and full removal from antivirus or other security tools. So you may use the helpful manual removal to clean up all its codes, dll.files or registry files from computer.

Tip: If you cannot remove JS:Downloader-ZY [Trj] on your own, please be free to contact VilmaTech 24/7 online expert here to help you resolve your program effectively in a short time.

live chat

Comments are closed.

Latest Posts