Remove Koobface. Description and removal instructions

Title: Koobface	Also known as: W32/Koobface,W32.Koobface,W32/Koobface.AZ,Boface
Type: Worms	Severity scale: (72 / 100)

Koobface worm is distributed on social networks, usually on MySpace and Facebook. It embeds itself on victim’s profile and displays links to malicious websites. The websites promote video codec which is actually the Koobface worm. Those sources might also install the worm without notifying visitors.

Koobface is also known as W32/Koobface, W32/Koobface.AZ, W32.Koobface and Boface. Once it gets on a machine, it checks if there are cookies of social networks. If it finds the cookies, it infects victim’s profile. If Koobface worm can’t find evidence of social networking websites, it simply erases itself.

Koobface also loads pop-ups that look like MS Windows error messages. The pop-up contains the following text: “Error installing Codec. Please contact support.”

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Related files: ld08.exe, fbtre6.exe, fmark2.dat, Ld12.exe

Koobface properties:
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic Koobface removal:

remover for Koobface

Koobface manual removal:

Kill processes:
fbtre6.exe mstre6.exe ld08.exe Ld12.exe

HELP:
how to kill malicious processes

Delete registry values:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Run\"systray" = "c:\windows\mstre6.exe"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Run\"systray" = "C:\Windows\fbtre6.exe"
HKEY_CURRENT_USER\AppEvents\Schemes\Apps\Explorer\Navigating

HELP:
how to remove registry entries

Delete files:
fbtre6.exe fmark2.dat ld08.exe Ld12.exe

HELP:
how to remove harmful files

Other programs to remove Koobface:

• Malwarebytes Anti Malware - Review - Download
• Malwarebytes Anti Malware - Review - Download
• Windows Defender - Review - Download

Information added: 24/11/08
Information updated: 17/09/09

Additional resources related to Koobface:

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Comments from visitors:

1. by . 2009-09-17 17:09:08

yah it's freddy64 now

2. by . 2009-08-17 18:08:05

Removed Koobface using AVG, but still can Not connect to the Net using Internet Explorer even after changing the LAN Settings to automaic detect settings from Use a Proxy server. Please help

3. by rodi. 2009-07-27 23:07:25

Thanks, although this file has other anmes as well. Previously it was freddy46, freddy49. Now, it's freddy51. Later it could be freddy52, freddy53 and etc.

4. by . 2009-07-27 14:07:04

I also had to remove a file "freddy51" from the C drive as well.