This article has been created in order to explain what is the KBOT Trojan and how to remove this malware completely from your computer.
The KBOT Trojan is a newly discovered dangerous Trojan that infects computers and can manipulate web browsers. It contains advanced functionality which allows hackers to easily take over control of the machines. Our removal guide features a detailed explanation of the banking Trojan’s mechanisms of operation, as well as instructions on restoring the infected computers from the infections.
Threat Summary
| Name | KBOT Trojan |
| 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 KBOT Trojan. |
The KBOT Trojan is a newly discovered malware which has been discovered in several large-scale campaigns across several regions and countries. This particular Trojan has an advanced infection sequence. When the virus engine is engaged in the first part of its sequence — to infect the target computers it will first process all EXE (executable) files on the accessed computer’s hard drives. However instead of stopping there it will also access other locations via the file manager — network shares and removable devices. This is very dangerous as this presents a very quick way for a single infection to impact a whole network in a relatively quick time. The security analysis shows that this is possible as the KBOT Trojan is programmed to interact with the operating system’s services.
According to the available information the KBOT Trojan primarily infects its targets through several main methods:
- Internet Download — The users can acquire the virus samples via various methods. In most cases this includes phishing campaigns — the hacking groups will send out SPAM email messages and craft hacker-controlled sites which will impersonate well-known companies or services. As they are usually hosted on similar sounding domain names the victims can confuse themselves and interact with the faked content.
- Local Network Infection — Already made infections from one of the computers in the local area network can lead to the virus deployment.
- Direct Attacks — The hackers can use special toolkits in orde to discover and compromise found vulnerabilities and other types of security weaknesses.
KBOT Trojan Capabilities
The KBOT Trojan features advanced features and modules which will be run after the threat has been installed on a given computer. One of the first actions which will be done is to conceal itself in the system by interacting with the operating system through various methods — calling APIs, DLLs and editing configuration files. There are several consequences which can follow:
- Security Applications Bypass — The engine can bypass or entirely remove installed security services and applications that can potentially block the virus. This includes the likes of anti-virus programs, sandbox environments, firewalls and etc.
- Integrity Checks — The KBOT Trojan can inject its own DLLs in various other processes by hooking up to them and inserting itself in their configuration files.
- System Changes — The main engine can also edit out existing configuration files and/or the Windows Registry. Such actions are commonly used to install the virus as a persistent threat — this will run the ransomware every time the computer is powered on.
Following the setup of the KBOT Trojan it will proceed with the usual activity — it can extract and inject information in web browsers — this is done by hooking up to the running processes and acquiring form data. The virus can automatically modify fields in web banking services and other opened web sites. This activity may not be visible to the users. The captured samples are compatible with the following applications: Google Chrome, Mozilla Firefox, Opera and the Yandex Browser.
The configuration used by the KBOT Trojan will also specify what to do following the web injection. The malware will follow the typical behavior by contacting a remote host using a secure connection which will be kept persistent for as long as possible. This will enable the remote attackers to take over control of the machines and/or install other threats when necessary.
During a detailed analysis of the acquired samples the specialists were able to extract a list of the possible commands:
- DeleteFile — This will delete a specified file from the system.
- UpdateFile — This will modify the contents of a given file with the supplied information.
- UpdateInjects — This will update the injection configuration.
- UpdateHosts — This will update the hosts file.
- UpdateCore — This will pdate the main engine and the relevant configuration files.
- Uninstall — This will remove the ransomware at request.
- UpdateWormConfig — This action will update the file containing information about the relevant EXE file location.
- UpdateBackconnectConfig — This will update the configuration file which will include a server list for reverse connections.
- Load — This will load a designated file to the system. As a result spyware applications will be installed on the target computers.
Remove KBOT 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 KBOT 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 KBOT 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 KBOT Trojan from Windows.
- Guide 2: Get rid of KBOT Trojan from Mac OS X.
- Guide 3: Remove KBOT Trojan from Google Chrome.
- Guide 4: Erase KBOT Trojan from Mozilla Firefox.
- Guide 5: Uninstall KBOT Trojan from Microsoft Edge.
- Guide 6: Remove KBOT Trojan from Safari.
- Guide 7: Eliminate KBOT Trojan from Internet Explorer.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
How to Remove KBOT Trojan from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove KBOT Trojan
Step 2: Uninstall KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan from Mac OS X.
Step 1: Uninstall KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as KBOT Trojan, 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 KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan 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 KBOT Trojan will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer
Eliminate KBOT Trojan 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.
