|Type||PoS Malware, Trojan|
|Short Description||The Trojan is a sophisticated threat that targets PoS terminals.|
|Distribution Method||Through a backdoor or exploiting a vulnerability.|
|Detection tool||Download Malware Removal Tool, to See If Your System Has Been Affected By Trojan.MWZLesson|
We have seen multiple Trojans targeting PoS (Point-of-Sale) terminals. Some of them are quite sophisticated and unexpected, while others share similar features and attack tactics. Researchers at Dr Web have recently discovered a new Trojan of the PoS family that is a modification of another, previously known malware. Even though the malware shares characteristics with previous threats, it is still defined as refined and quite severe. The ‘new’ Trojan is dubbed Trojan.MWZLesson. In this article, we are going to describe its attack methods.
Trojan.MWZLesson Attack Description
Once the Trojan is executed, it will modify the registry branch that controls the autorun. Trojan.MWZLesson is also designed to check the RAM of the compromised device for credit and debit card data. All collected information is sent to a Command & Control server. The Trojan is quite similar to another threat of the same kind – Trojan.PWS.Dexter.
Trojan.MWZLesson Malicious Capabilities
It is designed to intercept GET and POST requests sent from the compromised system’s browsers (Mozilla Firefox, Google Chrome, Internet Explorer). The requests are then navigated to the C&C server.
The malicious software is then capable of executing the following commands, as reported by the research team at Dr Web :
- CMD (cmd.exe). Forward the command to the command interpreter.
- LOADER. Download and run a file such as dll (using the regsrv tool), vbs (using the wscript tool), and exe (run directly).
- UPDATE. The threat can update itself.
- RATE. Set a time interval for communication sessions with the command and control server.
- FIND. Search and locate documents using a mask.
- >DDOS. Mount an HTTP Flood attack.
Trojan.MWZLesson C&C Communication
The Trojan interacts with the server via an HTTP protocol. However, the packages initiated by the malware are not encrypted, and packages that don’t have a specified cookie parameter will be ignored by the server.
Trojan.MWZLesson – Related to BackDoor.Neutrino.50
Researchers at Dr Web have referred to the PoS Trojan as a ‘crippled version of the BackDoor.Neutrino.50 version. Its code was used partially. This version of the Neutrino family is described as a multicomponent backdoor that is created to exploit the CVE-2012-0158 vulnerability.
BKDR_KASIDET.FD also known as Backdoor.Neutrino is a Backdoor Trojan that penetrates a system and steals valuable information.
Read More about BKDR_KASIDET.FD
How Can I Protect My Banking Information?
Unfortunately, one can never be sure when and how cyber criminals will initiate an attack against banking systems. What one can do, however, is make sure that his/her computer system and browser are protected against malicious attacks. First, users should improve the security settings of their browsers. Then, a strong anti-malware program should be sustained continuously on the system. Additionally, an external Firewall can also be used, in combination with the Windows firewall.
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 Trojan.MWZLesson from Windows.
- Guide 2: Get rid of Trojan.MWZLesson on Mac OS X.
- Guide 3: Remove Trojan.MWZLesson in Google Chrome.
- Guide 4: Erase Trojan.MWZLesson from Mozilla Firefox.
- Guide 5: Uninstall Trojan.MWZLesson from Microsoft Edge.
- Guide 6: Remove Trojan.MWZLesson from Safari.
- Guide 7: Eliminate Trojan.MWZLesson from Internet Explorer.
- Guide 8: Disable Trojan.MWZLesson Push Notifications in Your Browsers.
How to Remove Trojan.MWZLesson from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Trojan.MWZLesson
Step 2: Uninstall Trojan.MWZLesson 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.
Step 3: Clean any registries, created by Trojan.MWZLesson on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Trojan.MWZLesson there. This can happen by following the steps underneath:
Get rid of Trojan.MWZLesson from Mac OS X.
Step 1: Uninstall Trojan.MWZLesson 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 Trojan.MWZLesson 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:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove Trojan.MWZLesson files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Trojan.MWZLesson, 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.
Remove Trojan.MWZLesson 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.
Erase Trojan.MWZLesson 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.
Uninstall Trojan.MWZLesson 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.
Remove Trojan.MWZLesson 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 Trojan.MWZLesson will be removed.
Eliminate Trojan.MWZLesson 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.
Remove Push Notifications caused by Trojan.MWZLesson from Your Browsers.
Turn Off Push Notifications from Google Chrome
To disable any Push Notices from Google Chrome browser, please follow the steps below:
Step 1: Go to Settings in Chrome.
Step 2: In Settings, select “Advanced Settings”:
Step 3: Click “Content Settings”:
Step 4: Open “Notifications”:
Step 5: Click the three dots and choose Block, Edit or Remove options:
Remove Push Notifications on Firefox
Step 1: Go to Firefox Options.
Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":
Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”
Stop Push Notifications on Opera
Step 1: In Opera, press ALT+P to go to Settings
Step 2: In Setting search, type “Content” to go to Content Settings.
Step 3: Open Notifications:
Step 4: Do the same as you did with Google Chrome (explained below):
Eliminate Push Notifications on Safari
Step 1: Open Safari Preferences.
Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".