Danger level:  
  (72/100)

Koobface. How to delete? (Removal tutorial)

removal by Ugnius Kiguolis - - | Type: Worms
12

Why is Koobface worm extremely dangerous?

Since 2009 Koobface has been known as computer worm that spreads on social networks and tries to steal private users’ information. Malware attacks have been spotted on Facebook, Twitter, MySpace, Skype, Yahoo messenger and even Gmail, Yahoo and AOL mailing. Usually, computer infections target only Windows OS users; however, this cyber threat can affect Mac OS X and Linux as well. Koobface malware tries to trick users to install fake Flash Update that is necessary to watch a particular video. Victims receive the video link on direct message on the social network, and if they click on it, they are redirected to a dangerous website which asks to install updates. This bogus update hides Koobface virus which has been created to steal personal and private computer users’ information. Indeed, malware is a serious threat to your credit card and banking credentials, information published on social media and so on. During its lifetime, the developers of the malware have already earned thousands of dollars.

On the affected computer malware checks browser’s cookies and looks for cookies that are related to social media. If malware finds them, it activates itself, steals login information and spreads a malicious message to the entire social media friend list. If Koobface worm got in the ‘wrong computer’ that owner does not use or is inactive social media user, it deletes itself and delivers a fake pop-up message informing about particular codec error and asks to contact the service. Indeed, Koobface virus can provide lots of misleading advertisements that warns about various computer-related issues, offers software installation or updates. However, these notifications, ads, and warnings are just Tech support scam. If you click on them or even decide to contact cyber criminals, you may be tricked into installing software or giving criminals full access to your computer to solve a particular issue. However, these warnings are an actual sign of computer infection, and you should not ignore them. Keep in mind that it’s crucial to remove Koobface immediately because keeping in on PC may lead to the money loss.

Koobface worm asks to upadte Flash player

Some cyber criminals use Koobface name in order to scare computer users and swindle their money. Some tech support scammers deliver a pop-up message that computer has been infected with Koobface. To remove it from the system and protect the computer, the user has to call provided numbers. Keep in mind that calling suspicious numbers is not a wise decision. Crooks may trick you into purchasing or installing questionable software and cause more problems for you. They might also convince you to install remote control tools and give full access to your PC for them. If you see suspicious warnings about various computer-related issues, instead of calling to the shady help services, run a full system scan with strong and professional anti-malware application. However, if you do not have it, we recommend installing Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware. These programs are capable of detecting and eliminating malware. Within several minutes Koobface removal will be over.

Koobface distribution and how to avoid it

As we already mentioned Koobface, malware spreads via social media messages and fake video player. Social media users receive an infected video link from a friend which redirects them to the suspicious website, where they are asked to install Flash Updates. If users are curious and have no idea about safe ways to update programs and allows installing fake updates, they let malware inside the computer.

It’s not hard to recognise infected link from the safe one. The dangerous link usually has various symbols, letters or numbers and the domain looks unfamiliar. If the link looks strange or suspicious, do not open it. Victims claim that in the message their ‘friend’ told that they are in this video and encouraged them to watch it as well. Indeed, you can be easily tricked to open the link if you are close to the sender; otherwise, you should think before opening it. It’s doubtful that your colleague or old classmate whom you haven’t talked in ages will send you a funny video.

The only possible way to avoid Koobface virus is to stay away from unreliable and high-risk websites and do not click on any suspicious links or advertisements that you see online. Bear in mind that some viral videos on social may also include malicious content. Do not open any links and videos sent from your friends that look suspicious. Before opening it, double check the information and ask your friend if this link is really safe to open. If you end up on the website that asks to update Flash or install other applications, leave it immediately. Remember, that reliable updates do not show up as pop-ups or ads. Lastly, protecting your computer with strong antivirus program will also help to avoid malware.

Koobface removal options

The best way to remove Koobface is to employ a strong malware removal tool. We recommend choosing Reimage or Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus because these programs have been created to detect and eliminate malicious files. Install and update the program and run a full system scan. After a couple of minutes, it will remove this annoying computer infection. If you are not sure if your computer has been infected with Koobface or not, open Windows Task Manager and look for these processes: Ld12.exe, freddy79.exe, mstre6.exe, fbtre6.exe, ld08.exe. After Koobface removal, don’t forget to change all your passwords, just to be sure that cyber criminals do not have access to your accounts.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Computer security experts recommend using Reimage to uninstall Koobface. Reimage scans the entire computer system and checks whether it is infected with spyware/malware or not. If you want to remove computer threats and secure your computer system, you should consider buying the licensed version of Reimage.

Note: Manual assistance needed implies that one or all of removal tools have failed to remove the threat without manual intervention. In such scenario, please follow the manual removal guide, which is provided below.

You can find more details about this program in Reimage review.

You can find more details about this program in Reimage review.
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Press mentions on Reimage
Koobface screenshot
Koobface screenshot

Koobface manual removal instructions

End these processes:
freddy79
fbtre6.exe
mstre6.exe
ld08.exe
Ld12.exe

Remove these registry values:
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrent VersionRun"systray" = "c:windowsmstre6.exe"
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrent VersionRun"systray" = "C:Windowsfbtre6.exe"
HKEY_CURRENT_USERAppEventsSchemesAppsExplorerNavigating

Remove these files:
freddy79
fbtre6.exe
fmark2.dat
ld08.exe
Ld12.exe

Manual Koobface Removal Instructions:

Eliminate Koobface using Safe Mode with Networking

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

Reboot your computer in Safe Mode with Networking. Then employ a professional anti-malware program and run a full system scan. The program will find and delete Koobface Trojan and other malicious components. Keep in mind that it’s important to delete all malware-related components in order to avoid attacks in the future. For this reason, we do not recommend removing this worm manually.

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove Koobface

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove Koobface completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate Koobface using System Restore

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of Koobface and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of Koobface.

It is strongly recommended to take precautions and secure your computer from malware attacks. To protect your PC from Koobface and other dangerous viruses, you should install and keep a powerful malware removal tool, for instance, Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Ugnius Kiguolis
Ugnius Kiguolis

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