Name | TrojanDownloader:AutoIt/Fadef |
Type | Trojan Downloader. |
Short Description | This particular threat downloads various unwanted programs on the user PC |
Symptoms | Slow PC, unknown programs, antivirus starts blocking different threats |
Distribution Method | Via spam mail or by careless online clicking. Redirects by adware PUPs are possible |
Detection tool | Download SpyHunter, to See If Your System Has Been Affected By TrojanDownloader:AutoIt/Fadef |
A new type of trojan going by the name of TrojanDownloader:Autoit/Fadef has been reported to infect numerous PCs worldwide. This particular trojan horse is a downloader type, meaning that it modifies individual permissions that allow it to download and install several different programs on your computer in the background without your consent. The Trojan may use process migration to deceive your average antivirus program by transferring the hidden processes it runs to other executables. Experts recommend isolating the threat and automatically removing it with an advanced anti-malware scanning tool.
How Did TrojanDownloader:AutoIt/Fadef infect my PC?
Attackers have two types of strategies when they affect user PCs. One of them is targeted attack that is designed for a particular computer or a network of computers in an organization. It is usually done with a particular purpose this is why it is performed by MiTM attacks or Spoof emails. Given that this type of trojan is ‘Downloader’ we cannot rule out the fact that since it is believed to download numerous unwanted programs on the user PC, it may be distributed via massive spam mail campaigns that may resemble famous websites, like PayPal, eBay, Amazon, Alibaba and others. The threat may also be administered via social networks, like Facebook, Google+, Twitter and others, mainly via spam bots that post on users’ behalf. Also, you may have been infected by being redirected to a malicious site. This can happen if you have a browser hijacker or another PUP(Potentially Unwanted Programs) on your machines. Some PUPs cause redirects to client sites that may be dangerous to the user.
How Dangerous is TrojanDownloader:AutoIt/Fadef?
There are numerous possibilities of how this vile threat can influence your machine. One detail is that it is a trojan horse after all, and this means that it can undermine critical processes and may download applications that do different devious deeds:
- Encrypt user files and extort him for their unlocking (Ransomware).
- Delete user files (Depending on the cyber-criminal).
- Track the user’s typing key by key to steal passwords and other credentials. (Keyloggers)
- Send copies of user data to the attacker.
- Crash the operating system.
- Lock the user out of their PC.
- Conduct cyber-attacks from this computer (Common in botnets known as zombie networks).
- Control the PC hardware (Activate the camera, CD/DVD, etc.)
- Install a rootkit in the firmware of the computer, which is very difficult to remove and may be present even after a complete memory wipe-out and a freshly installed operating system.
More to it than that the Trojan is believed to created several different files in the %temp% and %appdata% locations in Windows, as well as keys and entries in the Registry Editor (RegEdit). This is done with the purpose of modifying different OS settings hence make itself harder to erase from the system.
TrojanDownloader:AutoIt/Fadef – How To Detect And Remove It?
When it comes to trojan horses, you have to implement different removal tactics in comparison to other malware. Since a Trojan has an active connection to a foreign server and has FTP enabled, it is important to isolate the cyber threat by disconnecting from the web. Then you should download an anti-malware program from a safe device that will detect all of the files affected and downloaded by this menace. The program should be with the latest definitions to remove every associated objects. To safely scan your PC, it is recommended to boot it in safe mode without networking to run it only with the essential Windows components and drivers. After scanning your computer with the anti-malware, a simple restart should be all that is necessary.
Bear in mind to backup your important data before removing any malicious files that may change critical windows elements which when quarantined may crash your operating system. It is recommended to use an external flash drive or other memory carrier device. Also, experts recommend to backup your files, using a live operating system, from a live cd or an USB stick. For more information and instructions about cleaning up the threat, refer to the instructions after this article.
Spy Hunter scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the anti-malware tool.Find Out More About SpyHunter Anti-Malware Tool / How to Uninstall SpyHunter
- Guide 1: How to Remove TrojanDownloader:AutoIt/Fadef from Windows.
- Guide 2: Get rid of TrojanDownloader:AutoIt/Fadef from Mac OS X.
- Guide 3: Remove TrojanDownloader:AutoIt/Fadef from Google Chrome.
- Guide 4: Erase TrojanDownloader:AutoIt/Fadef from Mozilla Firefox.
- Guide 5: Uninstall TrojanDownloader:AutoIt/Fadef from Microsoft Edge.
- Guide 6: Remove TrojanDownloader:AutoIt/Fadef from Safari.
- Guide 7: Eliminate TrojanDownloader:AutoIt/Fadef from Internet Explorer.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
How to Remove TrojanDownloader:AutoIt/Fadef from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove TrojanDownloader:AutoIt/Fadef





Step 2: Uninstall TrojanDownloader:AutoIt/Fadef and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:



Step 3: Clean any registries, created by TrojanDownloader:AutoIt/Fadef on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by TrojanDownloader:AutoIt/Fadef there. This can happen by following the steps underneath:



Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Get rid of TrojanDownloader:AutoIt/Fadef from Mac OS X.
Step 1: Uninstall TrojanDownloader:AutoIt/Fadef and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove TrojanDownloader:AutoIt/Fadef via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove TrojanDownloader:AutoIt/Fadef files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as TrojanDownloader:AutoIt/Fadef, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove TrojanDownloader:AutoIt/Fadef from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Erase TrojanDownloader:AutoIt/Fadef from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Uninstall TrojanDownloader:AutoIt/Fadef from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Remove TrojanDownloader:AutoIt/Fadef from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the TrojanDownloader:AutoIt/Fadef will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Eliminate TrojanDownloader:AutoIt/Fadef from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.