Remove Trojan:MSIL/ValleyRAT.GZD!MTB From Your System

If you’ve noticed something called Trojan:MSIL/ValleyRAT.GZD!MTB on your PC, know that this is malware and shouldn’t be allowed to remain there. More specifically, it’s a Trojan Horse that can act as a gateway to much bigger problems (on top of the ones it’s probably already causing).

My research into this malware shows that, similar to Trojan:JS/Redirector.GPAV!MTB and Trojan:Win32/Wacatac.H!ml, Trojan:MSIL/ValleyRAT.GZD!MTB typically arrives in a system through software bundles or malicious loaders that bring a whole entourage of other threats with them. Once Trojan:MSIL/ValleyRAT.GZD!MTB is entrenched in your system, it can open your system to advanced malware families, including information stealers, ransomware, and cryptocurrency miners. This means your personal data, financial details, system integrity, and even personal life could be at risk.

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Trojan:MSIL/ValleyRAT.GZD!MTB also enforces Registry modifications, spreads helper files, and sometimes even installs deceptive browser extensions that hijack your browsing, read your clipboard, or flood you with unwanted notifications.

In short, Trojan:MSIL/ValleyRAT.GZD!MTB recruits your computer into a larger malicious network rather than just performing a single malicious action. Leaving it untreated is like leaving your front door wide open for cybercriminals, so its removal is absolutely essential.

Trojan:MSIL/ValleyRAT.GZD!MTB Removal Guide

Begin with the normal Windows uninstall tools before checking folders by hand. Look for Trojan:MSIL/ValleyRAT.GZD!MTB in Apps & Features first because this is a quick, low-risk step and may remove the main program entry right away. Even when leftovers remain, it reduces clutter and makes later checks easier to confirm.

Remove Trojan:MSIL/ValleyRAT.GZD!MTB program through Apps & Features

15 mins

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1.1
If Trojan:MSIL/ValleyRAT.GZD!MTB is listed among installed apps, begin there. Open the Start Menu, choose Settings, and go to the section that controls installed applications.
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1.2
In Settings, open Apps. Review the full list or use the available filters for name, size, or install date to narrow down recent additions.
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1.3
Sort the list by Installation date so the newest entries appear first. That makes it easier to compare recent installs with the moment the unusual behavior began.
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1.4
When you find an entry you do not recognize, select it, click Uninstall, and follow the on-screen prompts. Let the removal finish fully so related files and settings can be cleared too.
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1.5
After the uninstall completes, open C:\Users\YourUsername\AppData\Local\Programs. Check for folders or binaries that appear connected to the removed item and note anything unusual.
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1.6
If a leftover folder clearly belongs to the program you just removed, delete it manually. Restart Windows afterward so file locks are released and you can confirm the unwanted item does not load again at startup.

After the restart, verify that the program entry is gone and that the same symptoms do not return. If Trojan:MSIL/ValleyRAT.GZD!MTB or related behavior still appears, that is common with persistent threats; continue with the next checks to remove hidden files and disable launch points that can survive a basic uninstall.

OVERVIEW:

Name	Trojan:MSIL/ValleyRAT.GZD!MTB
Type	Trojan
Removal Tool	Some threats reinstall themselves if you don’t delete their core files. We recommend downloading SpyHunter to remove harmful programs for you. This may save you hours and ensure you don’t harm your system by deleting the wrong files. Download SpyHunter (Free Remover)* OFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

How to Remove Trojan:MSIL/ValleyRAT.GZD!MTB Completely

Checking what is active right now can reveal file paths, parent processes, and the triggers that keep a threat running. If Trojan:MSIL/ValleyRAT.GZD!MTB is still present, these steps often show where it starts and which folders it relies on, helping you remove persistence instead of only the visible symptoms.

1. Prepare Windows for a deeper cleanup

15 mins

1

1.1
Enable hidden items so you can inspect folders tied to Trojan:MSIL/ValleyRAT.GZD!MTB. Open the Start Menu, search for Folder Options, go to the View tab, and select Show hidden files, folders, and drives. Hidden locations often contain support files.
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1.2
If Windows says files are “in use”, install LockHunter. It adds a right-click option that shows which process holds the lock and can help remove stubborn executables or DLLs.

You can still do most of the cleanup manually if you prefer not to use third-party software. When Trojan:MSIL/ValleyRAT.GZD!MTB leaves a file marked as “in use,” however, this utility can release the lock so deletion finishes cleanly instead of turning into a restart loop.

LockHunter is free, does not require registration, and usually installs within a few minutes. If you choose to use it while dealing with Trojan:MSIL/ValleyRAT.GZD!MTB, the goal is simply to unlock stubborn files so the rest of the cleanup can continue without repeated file-use errors.

Remove Suspicious Trojan:MSIL/ValleyRAT.GZD!MTB Processes in Task Manager

Stopping one executable is rarely enough because persistent threats can add startup entries, helper components, and scheduled triggers that relaunch the main process. The steps below help you identify the running file for Trojan:MSIL/ValleyRAT.GZD!MTB, remove the folder it uses, and then stop the process so it cannot relaunch at once while you continue the cleanup.

2. End suspicious Trojan:MSIL/ValleyRAT.GZD!MTB processes and remove their files

15 mins

1

2.1
To find components linked to Trojan:MSIL/ValleyRAT.GZD!MTB, begin with what is active right now. Press Ctrl + Shift + Esc to open Task Manager, then review the running processes and their resource usage.
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2.2
If Task Manager opens in the compact view, click More details. The expanded layout shows background processes and extra fields that make unusual entries easier to spot.
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2.3
Sort by CPU or Memory and watch for unfamiliar names or steady spikes. Malicious processes often use bland or generic labels so they blend in with normal activity.
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2.4
Right-click an entry that looks suspicious and choose Open file location. The path and nearby files usually make it easier to decide whether the process belongs to legitimate software.
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2.5
Try deleting the folder that contains the suspicious file. If Windows blocks the action, open LockHunter, choose What’s locking this file?, release the lock, and delete the file and its folder from inside the tool.
6

2.6
Return to Task Manager and click End task for that same process. Stopping it after the file is deleted reduces the chance of an immediate relaunch while you continue checking the system.

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Delete Trojan:MSIL/ValleyRAT.GZD!MTB Trojan Files

Many threats stay active by dropping small launchers and helper files into common system and user folders, then linking them to sign-in or other triggers. At this stage, the goal is to remove those launch points and leftovers so Trojan:MSIL/ValleyRAT.GZD!MTB cannot quietly rebuild itself. Check the locations below in order and delete only items you cannot identify.

3. Remove Trojan:MSIL/ValleyRAT.GZD!MTB startup entries and leftover folders

15 mins

1

3.1
Start with the startup locations that can relaunch Trojan:MSIL/ValleyRAT.GZD!MTB: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup and C:\Users\YourUsername\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup. Delete unknown shortcuts or executables.
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3.2
Inside each Startup folder, leave desktop.ini in place and remove other suspicious items. If Windows blocks the deletion, use LockHunter to unlock and remove them.
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3.3
Check the main program directories next – C:\Program Files and C:\Program Files (x86). Delete recently created, empty, or oddly named folders that do not match software you knowingly installed.
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3.4
Review user-level locations too: C:\Users\YourUsername\AppData\Local\, C:\Users\YourUsername\AppData\Local\Programs, and C:\Users\YourUsername\AppData\Roaming\Microsoft\Windows\Start Menu\Programs. These paths often store launchers, updater stubs, or scripts.
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3.5
Clear temporary files: open C:\Users\YourUsername\AppData\Local\Temp, press Ctrl + A to select everything, delete the contents, and empty the Recycle Bin.

Remove Trojan:MSIL/ValleyRAT.GZD!MTB Scheduled Tasks

Scheduled tasks are a common way to relaunch unwanted software after files have been removed, because Windows can run them at sign-in, on a timer, or when certain conditions are met. Reviewing task actions shows what will launch and from which path, which helps stop Trojan:MSIL/ValleyRAT.GZD!MTB from returning after a restart.

4. Disable tasks that relaunch Trojan:MSIL/ValleyRAT.GZD!MTB

15 mins

1

4.1
Open Task Scheduler to locate triggers that may bring back Trojan:MSIL/ValleyRAT.GZD!MTB. Search for it from the Start Menu, launch it, and expand the Task Scheduler Library to review tasks for your account and system folders.
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4.2
Double-click a task to open Properties. Check Actions to see what runs and whether extra parameters are included.
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4.3
Pay close attention to tasks that point into user locations such as AppData or Roaming, especially when the task name is unfamiliar. Those paths are often used by unwanted payloads.
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4.4
If a task clearly does not belong, copy the full path shown under Actions, then delete the task in Task Scheduler so it cannot run again.
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4.5
Go to the copied path and delete the referenced executable or script. Removing both the task and its payload helps prevent an automatic relaunch after reboot.
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4.6
Repeat the review in every folder under the Task Scheduler Library, including installer-created subfolders. Persistence is often hidden behind generic task names.

Remove Trojan:MSIL/ValleyRAT.GZD!MTB Through the Windows Registry

Even after files are deleted and tasks are removed, Registry entries can remain as startup hooks or leftover references to old paths. The goal here is to remove only entries you can clearly connect to Trojan:MSIL/ValleyRAT.GZD!MTB, while leaving legitimate services and vendor keys untouched. Work slowly and target specific values whenever possible.

5. Clean Trojan:MSIL/ValleyRAT.GZD!MTB leftover registry entries safely

15 mins

1

5.1
Open Registry Editor to inspect autostart data that may keep Trojan:MSIL/ValleyRAT.GZD!MTB active: press Win + R, type regedit, and press Enter.
2

5.2
Press Ctrl + F and search for the exact app name you removed earlier. This can reveal orphaned keys such as services or shell extensions.
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5.3
When a result appears, select the key in the left pane and delete it. Continue with F3 until no more entries are found across all hives.
4

5.4
Repeat the same search-and-delete process for any other suspicious programs you identified during the earlier cleanup. Clearing those entries reduces the chance that helper components can restore files.
5

5.5
Run one more search for the exact threat name. Removing a leftover value that points to a deleted file can stop items from being recreated at startup.
6

5.6
Manually inspect these commonly used paths for autostarts and policy runs:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServices
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce\Setup
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
7

5.7
In each location, review the right pane for values that point to unknown executables or unusual directories. Delete the specific value only so legitimate components are not disrupted.

Finish by restarting Windows. Confirm that startup looks normal, make sure no unexpected relaunches occur, and check that browsers and installed apps behave normally. If symptoms linked to Trojan:MSIL/ValleyRAT.GZD!MTB continue, an offline scan can help detect hidden components and confirm that no scheduled tasks or startup values remain.