How to remove Koobface Trojan

Koobface Trojan designed to steal sensitive data

Koobface is considered as Trojan horse virus designed to record login credentials, banking details, save contacts and other sensitive details. These collected details are saved to the remote command & control (C & C) server. This data stealer virus can cause financial losses and identify theft, and other issues. The purpose of scammers or attackers behind this Trojan virus is to gain access to your personal or sensitive details and generate some revenue as possible. For example, they can misuse your hijacked banking accounts to make fraudulent purchases or transactions.

Koobface is also designed to infect your computer with other viruses like ransomware, cryptominers and others. Once ransomware-type malware gain access to your device, they can start locking files storeds in your computer and modifying them by adding its file extension to the original filename. These file virus attempts to lock all non-system files stored in computer and sometimes, it may lock System files as well. However, it demands certain amount of extortion money to decrypt locked files. Keep in mind that they are not going to recover your encrypted files even when ransom money is paid.

Once cryptominers gain access to your computer, they will start draining your CPU & GPU of computer and making the overall performance of System very slow. It can run malicious processes that are designed to block or corrupt other legitimate process already running in computer. Also, cryptominers attempt to corrupt your personal files stored in computer and make them inaccessible. In sort, Koobface Trojan can cause chain infection. It means this virus spread the copies of itself in computer and infects your computer deeply.

This Trojan virus is similar to Emotet, Ursnif, Bolik and CrossRAT Malware that is unsafe for your online privacy & System security. These infections attempt to collect your personal or sensitive data stored in computer and browser. These collected data can be shared with other attackers or third-party to generate some revenue from them. So, Koobface malware removal is necessary to prevent System from further attacks.

How did you get Koobface Trojan in computer?

In some cases, Trojan-type malware is distributed through spam email campaign or malspam campaign. Cybercriminals or malware programmers send spam emails in your mailbox which contain some malicious hyperlinks or attachments. The attachments can be Microsoft Office document, PDF, RAR, JavaScript or other formats files. Once opened, it executes certain codes to infect your computer while hyperlinks presented in spam emails are designed to redirect you to phishing/scam webpage that can cause unwanted software, malware or infections downloads/installation.

Koobface can also be distributed through fake software updaters, or illegal activation tools. When you use illegal activation tool to update your software installed in computer, then you install malware or malicious programs instead of downloading/installing update. Also, these fake software attempts to tricks you into installing paid third-party applications to generate some income. So, you should be alert while browsing internet, and avoid updating any application using illegal activation tool or fake software updaters, avoid installing any applications from unsafe sources, and avoid opening any attachments or hyperlinks presented in spam or irrelevant emails.

How to protect Windows 10/8/7 computer against Koobface Trojan?

As mentioned, this nasty trojan virus can be distributed through fake software updaters, downloaders and installers. So, you should be alert while downloading/installing applications from internet. You should always choose official sources or direct & trusted link to download any software. Also, you should choose ‘Custom/Advanced/Manual’ installation if you want to avoid browser hijackers, adware or malware. Any attachments or hyperlinks presented in irrelevant or spam emails must not be opened/clicked. You should check if ‘Anti-Spam Filter’ feature in enabled in your mail service. Some antivirus software offers this feature which is enabled by default. Note that this feature when enabled, all spammy emails will automatically be delivered to ‘Spam’ folder of your email service. However, you should avoid spam emails or irrelevant emails and stop clicking any links or attachments. To protect your System against malware, you should run System scan with some powerful antivirus software regularly.

 

The Koobface pop-ups or redirection tornado is very messy and there are multiple ways of getting infected by the Adware or PUPs that causes such issues. In most cases, this computer virus appears after any freeware or cracked program is downloaded from untrusted sources especially the shared networks. The adware program is promoted as a legitimate bundled application. It is not needed to blame yourself for every chaos on the work-station. Sometime even the most trusted application could be a hacked program. It is very common for cyber-criminals to cover Koobface under a part of license hacking scripts or as a part of self-made algorithm within any optimization application for Windows.

According to various surveys conducted and researched by cyber-experts, Koobface pop-ups and ads are hidden in the advertisements somewhere placed in the odd websites. Such domains have highly intense and blinking ads. The owner or such websites often accept any kind of banners and promotional campaigns to get posted. This type of campaigns and marketing strategies are very risky for the visitors because only the webpage proprietors know what will happen or occur on interaction with such ads. There could be general infection such as an adware or browser or you may even receive something that is very dangerous such as ransomware, coin miners and so on.

It is very important that you read the license agreement before installing any kind of so called “hand” program or browser extensions. The users terms agreement discloses so many things about the program that helps to distinguished between a genuine application or a spam. During the installation process, don’t check the boxed responsible for additional files or program installation. Regardless of its sources, the additional or hidden files should be avoided.

Another thing that you have to be careful is malspam. They may contain malicious URLs as well as file attachments. Maximum of the malspam uses domain spoofing. Apart for circulating adware and browser-hijackers, it is used to spread infections such as infostealers, banking Trojans, malware loaders, backdoor Trojans, remote access Trojans and so on.

Follow the below steps to remove Koobface fully:

• Delete Koobface from Windows
• Remove Koobface from MacOS
• Get rid of Koobface from Google Chrome
• Uninstall Koobface from Mozilla Firefox
• Erase Koobface from Internet Explorer
• Delete Koobface from Microsoft Edge
• Remove Koobface from Safari

If you are a computer expert, you can easily find all suspicious files and processes related to Koobface on different files, folder and locations within your system and web browser. However, this task will be difficult particularly in the case when you are less tech savvy user. You might lose your important files and endanger your whole system in the manual process. So, especially for you, we have added automatic Koobface removal tutorial using third party software.

Let me clear you one thing that your systems have built-in Antivirus tool to ensure the system protection against malware or viruses. You have Windows defender (on WIndows) and Xprotect (on Mac)that are enabled by default and start at each system startup.However, the search density for third party antivirus tool is high because of their faster and quick scanning/ removing capability and ability of detecting and deleting adware, potentially unwanted applications, browser hijackers, rootkits, Trojan horse virus, backdoor virus, worms, keyloggers and other type of malware that may find easy to bypassing the built-in antivirus programs on the device.

〈Spy-hunter for Windows〉

Spyhunter is a powerful antivirus tool for Windows. It can scan for, identify, remove and block malware, PUPS and all other objects using advanced scanning mechanism. It is specially designed to adapt and update so its virus detection database with have all latest released malware detection all the time. Additionally, it is user-friendly and also provides the effective ‘24 X 7’ Customer Support, HelpDesk Customer Support service and full custom support with HelpDesk Feature. Below, you will have the complete instruction on how to download and Install SpyHunter.

Download/ install SpyHunter to Windows

• Click on the below Download button to initiate SpyHunter Antivirus software download,
• This will install the setup up file (SpyHunter-Installer.exe) that you find on download dialogue box,
• Double-click on the SpyHunter-Installer.exe fileto open it,
• Confirm with yes if the User Account Control dialog shows up,
• Then, Select preferred language and click on Ok button,

• Click Continue,

• Read and Accept the End User License Agreement and Privacy Policy and select Install,

• Wait, till the installation process completed,

• Click Finish to complete the installation process.

After the program is successfully installed, you can delete the file name SpyHunter-Installer.exe from the Desktop. Then, open SpyHunter using its icon appears on the Desktop or go to the Windows Start menu> Programs> All Programs and click on SpyHunter icon.

⇒ User guide on how to scan systems using SpyHunter

• Open SpyHunter and click on Home menu item,
• Go to the Home tab and click on Start Scan! Button,

Wait for the scanning process to complete (you can however anytime stop the scanning process if you want by clicking the stop button),

After the scan, Spyhunter provides the report where you find the details of the scan result along with system errors, vulnerabilities and malware found

Register for the Spyhunter and remove Koobface and all detected threats

To delete Koobface and all associated threats found through the system scan, you need to register for the SpyHunter:

• Click on the register button available on the top-right corner of the program window,and then click on buy button.
• You will automatically be redirected to the purchasing page, enter your customer detail and valid email address,
• After the successful payment, you will receive email confirmation message. The email contains the account information such as usernames and passwords and so on,
• Thereafter, enter the same detail in the Account tab of the settings section of the program. Now, you can avail full features and protection to your system.

Steps to remove Koobface and other detected threats:

• Spyhunter antivirus tool categorizes the type of objects detected during system scans in total five sections – “Malware“, “PUPs” (Potentially Unwanted Programs), “Privacy“, “Vulnerabilities“, and “Whitelisted objects“

• Select the object you want to remove and then click on Next button (you can quarantine an object so that you can anytime restore it to the system using restore feature)

〈Mac Keeper for Mac Os X system〉

Mac Keeper is specially designed to tune up performance and protect your Mac. It can block malware, adware and major security threats from harming your personal data. Also, it can clean junk, duplicates and useless apps to save gigabytes of disk space to get the things running like the way before. So, we recommend download and install this application, if you are Mac user and are infected with Koobface infection and want to get rid of it fully. Check below for the download/ installation guide and the steps how to scan and delete the suspicious application from the system.

Steps to download and install MacKeeper

• Click below the button to download Mackeeper application,
• Open the MacKeeper.dmg or MacKeeper.pkg (the downloaded file that you find in Finder>Downloads),
• Follow the on-screen instructions and complete installation process

How to scan PC and remove Koobface using MacKeeper

To begin with, click on One-Click Scan icon on the program’ window (Six drive clean-up utilities Binaries Cutter, Cache Cleaner, Duplicates Finder, Languages Cutter, Logs Cleaner and Old Files Finder will altogether scan the hard drive for the space to be cleaned and the One-click scan will show the total space in the drive),

Check the list of all files by scrolling horizontally and decide which one to delete (you can preview the file content using Quick Look),

Select Koobface all useless files and click on Remove button to get rid of them (you can filter to find a specific among the scan results and scan the drive once again for Rescan).

Then, customize the list of the cleaners using the preferences Window, if you want.

Congratulations! Koobface will be completed removed after this. Below, we are providing you how you can approach to the malware deletion by hand. As we already said, proceed to these steps only by ensuring that you have IT skill and previous virus removal experience as it will be complex tasks for the beginner. Nonetheless, we try our best to keep the manual Koobface removal guide simple so that you can easily step to the removal process.

[Important note: Before we go, you should know the above mentioned steps are basically an automatic process where you simply have to use the anti-malware tool to detect and delete the malware. These kinds of PC security application clean up the work-station as well as provide protection from such malware in future as well. It provides internet security, malware protection as well as boosts up the overall PC performance.

On the other hand, for all those who are computer experts or have technical knowledge in PC components and software, the depth manual process has been discussed below. Again, remember that this is a cumbersome process and requires a lot of expertise and precision. This is a long process and should be executed as it is mentioned.]

⇒ Delete Koobface from Windows

To remove Koobface from Windows OSs versions10/ 8, perform the below steps:

• Go to the Windows’Control Panel(simply by opening search box and searching by the name then clicking on the search result),
• Click on programs option and select Uninstall a program,

• In the provided list, check for all Koobface’s entries (or all recently installed suspicious programs),
• Right-click on the application, and click on Uninstall option,
• Click “Yes” tothe User Account Control page shown to you, then wait,
• After the installation process completed, click Ok to finish the process.

If you are Windows 7/XP users, perform these steps:

• Click on Windows Start> Control Panel on the right pane (or click Add/Remove programs on XP running devices),

• Select Programs>Uninstall a program,
• Click once on the app for the selection,
• Tap Uninstall/Change,
• Confirm with Yes on the confirmation prompt,
• Then, click OK and finish the removal process

⇒ Remove Koobface from Mac OS X system

Delete Koobface from Application folder:

• Go to the application folder (by selecting Go>Applications on the menu bar),
• Find Koobface related entries in the Applications folder,
• Click on the app and move it to the Trash (just drag it or perform right-click and pick Move to Trash option),

Now delete Koobface and all relevant files from Application Support, LaunchAgents and LaunchDaemons folder using the below steps:

• In the menu bar, click Go> Go to Folder,
• Enter /Library/Application Support, press Go and hit Enter,
• Check for dubious entries in the Application Support folder and delete them,
• Then enter /Library/LaunchAgentsand /Library/LaunchDaemons one after another and find and delete the Koobface related entries presented in the two folders

⇒ Get rid of Koobface from Google Chrome

Delete malicious extensions from Chrome browser:

• Open the web browser and click on Menu button (on the three vertical dot appears at the top-right corner of the page),
• Select More tools> Extensions,
• A newly opened window shows you all installed extensions,
• find the suspicious ones related to Koobface and remove them by clicking on Remove option

Clear the Chrome Cache and web data:

• Click on Menu and select settings,
• In the Privacy and Security, choose Clear browsing data option,
• Then select Browsing history, Cookies and other site data, and also the cached images and files,
• Click on Clear data

Change Chrome’s homepage:

• Click menu option and select settings,
• Go to On Startup section to look for the suspicious site (Koobface),
• Now, click on Open a specific or set of pages, and click on remove option (appears on the drop down menu appears on clicking the three dots)

Reset Google Chrome if the previous methods did not help you.

Steps to reset Chrome browser:

• Under the Settings option, Scroll down to find Advanced,
• Locate Reset and Clean up section,
• Now click on Restore settings to their original defaults,
• Click on Reset Settings to finish the Koobface removal.

⇒ Uninstall Koobface from Mozilla Firefox

Remove all dangerous extensions:

• Open the browser, click on Menu option by clicking three horizontal dot appears at the top-right window,
• Select Add-ons option,
• Here, select all plug-ins related to Koobface and remove them

Reset the homepage:

• Choose Options on the opened menu after clicking the three horizontal dots,
• Go to the home option,
• Enter the preferred site

Clear cookies and site data on Firefox:

• Go to the Privacy & Securityunder Options,
• Navigate to Cookies and Site Data
• Click on Clear data option,
• Then, select the Cookies and Site Data as well as Cached web content and hit Clear

⇒ Reset Mozilla Firefox:

Reset the web browser if Koobface did not get removed even after performing the above steps:

• Open Firefox and click on Menu,
• Click help and find Troubleshooting information,

• Go toGive Firefox a tune up section, click on Refresh Firefox…,
• Confirm the action by clicking on Refresh Firefox on the pop-up shows up to you

⇒ Erase Koobface from Internet Explorer

Remove all malicious extensions:

• Open IE, Click on Gear icon,
• Select Manage Add-ons,
• In the Manage Add-ons Window, find all suspicious plug-ins related to Koobface and disable their entries by clicking Disable option

Change browsers’ homepage:

• Select Internet option in the IE’s menu,
• Under the General Tab, delete the homepage address and replace it with the one of your choice,
• Click Apply and then Ok to make the changes take place

Clear all temporary files:

• Again, go the Internet options,
• Now, find Browsing history,
• Click Delete…,
• Make selection to all relevant fields and hit Enter

Reset the web browser:

• Open IE, click on Gear icon,
• Select Internet Options> Advanced,
• In the opened window, select Delete personal settings> reset to complete Koobface removal.

⇒ Delete Koobface from Microsoft Edge

Erase all unknown extensions from MS Edge:

• Open the browser and click on the three horizontal dots at the top-right of the browser window,
• Pick Extensions,
• From the list, select all Koobface related extensions,
• Click on Uninstall(appears at bottom on clicking the Gear icon)

Clear the cookies and other browsing based data:

• Select Menu>Privacy & security,
• Go the Clear browsing data and pickChoose what to clear,
• Select all except the passwords (and Media licenses if applicable) and then click on Clear option

Change browsers’ homepage and new tab pages:

• In the menu, choose settings,
• Navigate to On startup section,
• Disable the suspicious domain

⇒ Reset MS Edge

Reset the browser if the above steps did not remove Koobface:

• Open Task Manager(by Ctrl + shift +Esc shortcut),
• In this window, click on More details> Details tab,
• Now, find all entries with Microsoft Edge name, right-click on each of them and click End Task

Alternatively, you can use Advanced Edge reset method. For this, you need to backup your data at first:

• Check the system for the following folder,

C:\\Users\\%username%\\AppData\\Local\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.

• Select all folders, right-click on them and choose Delete,

• Now, right-click on start button and choose Windows PowerShell (Admin),
• A new window shows up to you, copy and paste the following command and hit Enter,

Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml” -Verbose

⇒ For Chromium-based Edge

Delete the malicious extensions using the following steps:

• Open the browser, select Settings> Extensions,
• Find all unwanted extensions and remove them by clicking Remove option

Clear the Cache and site data:

• Go to Settings>Privacy and services,
• Under Clear browsing data, select Choose what to clear,
• Select Time Range and Pick All Time
• And then Select Clear now option

Reset chromium based MS Edge browser:

• Under the settings, click on Reset settings,
• Select Restore settingsto their default value,
• Click Reset to confirm

Remove Koobface from Safari

Delete all unwanted extensions:

• Click the tab Safari,
• Select preferences,
• Pick Extension from the newly opened window,
• Now, find all unwanted extensions related to Koobface and select uninstall

Clear cookies and site data:

• Click on Safari> Clear History,
• In the drop down menu, select all history under Clear,
• Then, click on Clear History option

Reset the web browser:

• Click on Safari> Preferences…,
• Select Advanced tab,
• Mark Show Develop menu,
• Click Develop and select Empty Caches

After uninstalling the potentially unwanted application and fixing all installed web browsers, you need to run a full system scan using some professional antivirus tool. This software will help you in getting rid of all Koobface registry traces as well as identity other parasites and possible malware infections on the system.

Protect your system from Adware, Trojan and Rasomware in future

Adware, Trojan, Ransomware and other malicious malware take some specific routes all the time to infiltrate systems. Most often, crooks ensure malware infiltration through spam email campaigns, freeware downloads, fake updates and unofficial activators for licensed programs. Stay cautious when surfing the day to day browsing activities, and act wise-fully when you come across such sources through which there is a maximum chance of malware infiltration to the system.