TrojanDownloader:JS/Nemucod.H Removal Guide

By | March 26, 2015

Has your computer been attacked by TrojanDownloader:JS/Nemucod.H? Have no luck to remove this threat using your antivirus program? If so, then you can continue reading and find out the effective way to remove TrojanDownloader:JS/Nemucod.H from your PC instantly.

Description of the Trojan Horse

TrojanDownloader:JS/Nemucod.H is a rather dangerous Trojan horse which attacks your system via exploiting system vulnerabilities and network flaws. Once installed, this Trojan horse will drop additional parasites on your computer and downloads many unwanted programs to damage your computer terribly. It can create many malicious components and place them into your startup registry to make itself activated automatically whenever the Windows is launched.

It has abilities to alter your essential system settings, change/delete important files at random. It may frequently cause some severe PC problems like blue screen of death, redirection and system crashes. Besides, it displays a ton of pop-up ads, fake alerts, bogus notifications and error messages on your computer screen every few seconds. To escape the detection by antivirus and security programs, it often changes its file names and positions. It can even terminate your security tools and block you to access the legitimate websites.

What’s terrible, TrojanDownloader:JS/Nemucod.H can steal your valuable information by monitoring your online activities and Internet habits. It can collect your search queries and cookies and extract your confidential information. Then, it will send the information to the remote cyber hackers. Anyway, to protect your PC and personal information, it is suggested to take immediate action to eliminate TrojanDownloader:JS/Nemucod.H from your PC upon its detection.

Note: If don’t have much computer expertise, you should not try the manual removal method. Anything done wrong during the removal process could lead to serious system damage. For the sake of safety, it is highly recommended that you download and install a professional malware removal tool to remove the nasty Trojan horse automatically. Click and download SpyHunter right now!

download spyhunter now

Symptoms of the Infection

● Your computer suddenly gets very slow when starting up, shutting down, launching programs or processing tasks.
● Network connection speed slows down significantly and it often takes a long time to access a website.
● You frequently get alerts from your firewall about an unknown program or process trying to access the internet.
● Your computer is flooded with numerous ad pop-ups and false security alerts.
● Some of your files become corrupted or suddenly don’t work properly.
● Some files or folders are deleted or changed without any human actions.
● Your favorites list has added some sites that you never placed there
● Unknown toolbars appear in your web browser and you don’t remember installing them.
● Unexpected icons appear in the task tray at the bottom of your screen.
● You cannot access security related websites or cannot update your antivirus software.
● You are redirected to websites which have nothing to do with the ones you type into the address bar.

Why Can’t You Remove the Trojan Horse Using Antivirus Program?

You may find it hard to detect and remove TrojanDownloader:JS/Nemucod.H using your antivirus program. Why? First of all, you have to know that an antivirus program or anti-malware program can help protect your computer from malware just because that it is able to recognize that they’re actually malware. However, in these days more and more malware are created by cyber hackers for various purposes and not every type of malware can be easily recognized by an anti-malware program, especially one that hasn’t been updated for a long time. In addition, some cyber hackers know much about how anti-malware programs work and they can write a Trojan horse which has the ability to bypass most security tools.

TrojanDownloader:JS/Nemucod.H is such a Trojan horse that can evade detection and removal by a general anti-malware program. When downloaded onto a computer, it will quickly load itself into the Windows registry, which allows it to be executed every time the computer starts up. Also, it will disguise itself as a part of the system file, attempting to evade detection by the antivirus program. Moreover, this Trojan horse will try to kill process of the antivirus program so as to disable it. All these can explain why it becomes a so difficult task to remove the Trojan horse from an infected computer.

Guide to Remove TrojanDownloader:JS/Nemucod.H Effectively

Method 1: Manually Remove the Trojan Horse by Following the Guide.

Method 2: Automatically Remove the Trojan Horse by Using SpyHunter.

Method 1: Manually Remove the Trojan Horse by Following the Guide.

Step 1: Terminate process of TrojanDownloader:JS/Nemucod.H.
a. Start the Task Manager by pressing the key combination “CTRL + Shift + ESC”.
b. Under the “Processes” tab, find out and terminate the Trojan horse related process (process of the Trojan horse may be named with random characters and it occupies extremely high CPU usage).

End process
Step 2: Remove all Trojan horse related programs.
a. Click the Start menu, and select “Control Panel”.
b. In the “Control Panel” window, click on “Uninstall a program”.

uninstall a_program_1
c. In the list of all currently installed programs, find out any programs related to the Trojan horse and click on “Uninstall” button.
d. Then, click “Yes” in the pop-up window which asks if you want to uninstall the program.

Step 3: Show all hidden files and folders.
a. Go to Start button and select “Control Panel” option.
b. In the “Control Panel” window, click on the “Appearance and Personalization” link.
c. Select “Folder Options” and click the “View” tab.
d. Under “Advanced settings”, tick “Show hidden files, folders and drives”, non-tick “Hide protected operating system files (Recommended)” and then click the “OK” button.

Folder Options-Win 7

Step 4: Remove all files relative to TrojanDownloader:JS/Nemucod.H.
a. Navigate to the local disk C.


open local hard disk C
b. Find out and delete all malicious files created by the Trojan horse.

%AllUsersProfile%\Application Data\.dll
%UserProfile%\Desktop\[Trojan horse name].lnk
%UserProfile%\Start Menu\[Trojan horse name]\Help.lnk
%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\[Trojan horse name].lnk

Step 5: Delete all registry entries associated with TrojanDownloader:JS/Nemucod.H.
a. Open Registry Editor by pressing the Windows key + R key, typing “regedit” and clicking OK.

b. Search for all the registry entries associated with the Trojan horse and remove them all.


HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “random.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\[Trojan horse name]
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\[Trojan horse name]\DisplayIcon %AppData%\[RANDOM CHARACTERS]\[RANDOM CHARACTERS].exe,0
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\[Trojan horse name]\DisplayName [Trojan horse name]

Method 2: Automatically Remove the Trojan Horse by Using SpyHunter.

If you are not expert at computer, automatically removing TrojanDownloader:JS/Nemucod.H will be a better option. SpyHunter is a reputable anti-malware program offering detection and protection against malware including Trojans, worms, viruses, rootkits, adware, spyware, ransomware, etc. You can follow the steps below to download and install this powerful removal tool on your computer, and then run it to detect and remove all found threats on your PC.

Step 1: Click SpyHunter Download Link and save the file in your hard drive. When a small window pops up, please click on the “Save File” button.

spyhunter-save file

Step 2: Once the file is downloaded, double click on it. And click on the “Run” button when a window appears and asks if you want to run this file.

spyhunter-run setup file

Step 3: After that, SpyHunter installer will be downloaded. You can see the downloading process as shown below.

spyhunter-download installer

Step 4: Once downloading finishes, select the language, accept the SpyHunter license agreement and click “Next”.


Step 5: Keep following the wizard during the setup process. When you are presented with the prompt saying that SpyHunter has been successfully installed, click the “Finish” button.

spyhunter-installation finish

Step 6: Then, launch SpyHunter by double-clicking on its icon, and then click on “Scan Computer Now” to scan your system for TrojanDownloader:JS/Nemucod.H and other potential threats.


Step 7: The scanning process may take 20 minutes or more (depending on the number of files in your system). So, you need to wait for some time until the system scan is completed.

spyhunter-scan files process

Step 8: Once SpyHunter finishes scanning your computer, make sure that all malicious items are selected, and click on the “Fix Threats” button. Then, SpyHunter will begin remove all threats from your PC. Restart your computer, and TrojanDownloader:JS/Nemucod.H should have been completely removed out of your PC.

spyhunter-fix threats

How to Protect Your PC from Malware Attacks?

Install a reliable anti-malware program and update it regularly. Your first line of defense would be a powerful anti-malware program that provides real-time protection. SpyHunter is such a powerful anti-malware program which does not only detect and remove threats, but also stops any processes that attempt to let malware enter into your PC secretly to exploit Windows registry. Click here to download this excellent anti-malware program now.

Always update the software installed on your PC. Software vendors constantly releases updates for programs whenever a flaw is discovered. Getting the updates makes the computer more secured and help prevents spyware, worms, viruses, and other malware similar to TrojanDownloader:JS/Nemucod.H.

Keep your operating system up-to-date. Malware tend to exploit system vulnerabilities to attack your computer. Keeping your operating system updated helps protect against the malware attacks. Besides, you should configure your system to perform automatic updates to ensure your system is operating with the latest patches.

Use caution when surfing on the Internet.
1) Be suspicious of any email attachments from unknown people or with offers that seem too good to be true.
2) Avoid clicking on suspicious links in emails or instant messages, or you may be linked to some malicious websites.
3) Don’t click on misleading pop-up windows in unsafe website, or you may download unknown malware onto your PC.
4) Don’t download and install software from unreliable sources. Some malware come bundled in software packages and once you install such software on your PC, you install malware as well.


TrojanDownloader:JS/Nemucod.H is a dangerous Trojan horse which infects users’ computers for the purpose of stealing confidential information as well as valuable data. Once installed in your computer, this Trojan horse will change many types of settings in the system, randomly delete or overwrite system files, disable important programs or services, drop other malware to the infected computer, and also try to collect confidential information & data stored on the computer. To fix or avoid the problems caused by this Trojan horse, you need to remove this Trojan horse as soon as you find its existence on your computer. We have introduced two methods to remove TrojanDownloader:JS/Nemucod.H above, you can choose one of them to deal with this threat.

Warm Tips:

The manual removal involves the removal of files and registry entries, which would result in unexpected system damage if you wrongly delete any important files or registry entries. Even computer whizzes would be cautious when they resort to this removal.

That’s why we highly recommend you to download and use a powerful malware removal tool help you out of trouble. SpyHunter is a user-friendly removal tool which can do a complete scan of your computer and completely remove all the detected threats without causing any side-effect. Now you can click the button below to download SpyHunter on your PC.

download spyhunter now

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