This article has been created in order to explain what is the BackSwap Trojan and how to remove this malware completely from your computer.
The BackSwap Trojan is a dangerous virus that has successfully hijacked hundreds of computers. In our removal guide computer users can learn more about its mechanism of infiltration and operation, as well as the necessary steps to remove active infections from compromised hosts.
Threat Summary
| Name | BackSwap |
| Type | Trojan Horse Virus |
| Short Description | Silently infects the target machines and modifies key applications and system services. |
| Symptoms | The user may not experience any signs of infiltration. |
| Distribution Method | Malicious web links, Malicious Files, Malicious E-Mails |
| Detection Tool |
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User Experience | Join Our Forum to Discuss BackSwap. |
Grobios – How Does It Infect
The initial report of the BackSwap Trojan was reported on May 25th during a targeted attack against online banking services in Poland. According to the reports a large number of customers were impacted, specifically those from the following financial institutions:
- PKO Bank Polski
- Bank Zachodni WBK S.A.,
- mBank
- ING
- Pekao
The hackers behind the threat were able to target transactions that range from 10 000 to 20 000 PLN which equals to amounts between 2680 to 5363 US Dollars.
The primary method of distribution is the use of SPAM email messages that use advanced social engineering tactics in order to manipulate the victims into interacting with the dangerous elements. The emails are customized to appear as notifications from the banking institutions or other commonly used companies and Internet services. They contain either a hyperlinked instance or the Trojan is directly attached to the messages. The email messages can also serve as the primary means for the distribution of infected payload carriers. Two popular variants are the following:
- Software Installers — The hackers choose popular applications that are often installed by end users. Examples include creativity suites, system utilties, office and productivity tools and even computer games.
- Documents — Using a similar method the targets can infect documents of different types: rich text documents, spreadsheets and presentations. Usually this is done by inserting malicious scripts (macros) that when enabled will start the infection.
It is also possible for victims to infect themselves via browser hijackers — malicious web browser plugins that are usually distributed on the relevant plugin repositories. The hackers utilize fake developer credentials and user reviews in order to manipulate the users into believing that it is a legitimate instance. The most common behavior tactics modify the default settings in order to redirect the users to a hacker-controlled site. Once this is done tracking cookies can be deployed in order to spy on the victims and afterwards the BackSwap Trojan is installed.
The malicious payloads can also be uploaded to hacker-controlled sites that are designed to look like legitimate download portals. Other popular forms include file sharing networks such as BitTorrent. It appears that the threat is being distributed using the Nemucod Downloader which is responsible for dropping the threats. Its signatures are detected with the following identifiers:
- HEUR:Trojan.Script.Generic
- JS.Downloader
- JS/Dwnldr-VQJ
- JS/TrojanDownloader.Nemucod.EAN
- TROJ_FRS.VSN1CE18
- Trojan.Agent.CZBY
- Trojan.JS.Downloader.Nemucod
Grobios – More Information and Analysis
Once the virus file is deployed to the victim hosts the infection is started. The security analysis shows that the associated malicious engine has a different mechanism of hooking to system and user-installed applications. This is done by simulating user input instead of interacting with the built-in functions. The BackSwap Trojan therefore does not need to have a specific instructions set for the different architectures.
This type of malicious threat is classified as a banking Trojan and as such interacts primarily with web browsers. Usually the most popular ones are made compatible: Mozilla Firefox, Google Chrome, Internet Explorer, Microsoft Edge, Safari and Opera. The malicious engine generates event hooks that similate actual human behavior. It is also loaded with strings that showcase potential online banking activitiy. There are several behavior events that can suggest potential banking activity: opening of bank-specific URLs, browser tabs, bookmarks, entering of two-factor authentication credentials and etc.
The browser hijacker code simulates copy and paste of keyboard output. Newer versions of it feature the possibility to interact with JavaScript code.
The security experts note that Mozilla Firefox and Google Chrome include security measures that protect against self-XSS attacks. However due to the fact that that the BackSwap Trojan simulates letter-by-letter keyboard input and copy/paste operations much of these techniques are automatically mitigated.
Whenever an active online banking session is detected the associated virus engine will hijack the transactions and modify the entered values in order to change the recipients. This happens in an automatic manner and the users have no way of controlling it.
WARNING! It is very possible that future versions of the BackSwap Trojan can exhibit new behavior strains and further adding other modules.
Remove Grobios Effectively from Windows
In order to fully get rid of this Trojan, we advise you to follow the removal instructions underneath this article. They are made so that they help you to isolate and then delete the BackSwap Trojan either manually or automatically. If manual removal represents difficulty for you, experts always advise to perform the removal automatically by running an anti-malware scan via specific software on your PC. Such anti-malware program aims to make sure that the Grobios is fully gone and your Windows OS stays safe against any future malware infections.
Martin Beltov
Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.
Follow Me:
- Guide 1: How to Remove BackSwap from Windows.
- Guide 2: Get rid of BackSwap from Mac OS X.
- Guide 3: Remove BackSwap from Google Chrome.
- Guide 4: Erase BackSwap from Mozilla Firefox.
- Guide 5: Uninstall BackSwap from Microsoft Edge.
- Guide 6: Remove BackSwap from Safari.
- Guide 7: Eliminate BackSwap from Internet Explorer.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
How to Remove BackSwap from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove BackSwap
Step 2: Uninstall BackSwap 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:
Follow the instructions above and you will successfully uninstall most programs.
Step 3: Clean any registries, created by BackSwap 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 BackSwap there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
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 BackSwap from Mac OS X.
Step 1: Uninstall BackSwap 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 BackSwap 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 BackSwap files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as BackSwap, 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 BackSwap 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 BackSwap 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 BackSwap 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 BackSwap 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 BackSwap will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Eliminate BackSwap 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.
