W32.Qakbot

Malware removal

W32.Qakbot is a worm that spreads through resources shared on a network. Once nestles into your computer, the worm may steal personal information (think Outlook, FTP logins, keystrokes typed, sites visited, etc.), download more badware onto your PC, and allow a hacker to access your system.

Unless spending a weekend with a zombie computer sounds hot, let me show you how to remove .

Block sites:

http://a.rtbn2.cn

http://c.rtbn2.cn

http://adserv.co.in

Get rid of files:

_qbot.dll
_qbotinj.exe
_qbot.cb
crontab.cb
updates.cb
C:Documents And SettingsAll Users_qbothome
C:Documents And SettingsAll Users_qbothome~e5d1417.tmp
C:Documents And SettingsAll Users_qbothome~e5d141a.tmp
C:Documents And SettingsAll Users_qbothome_installed
C:Documents And SettingsAll Users_qbothomemsadvapi32.dll
C:Documents And SettingsAll Users_qbothome_qbotnti.exe
C:Documents And SettingsAll Users_qbothomeuninstall.tmp
C:Documents And SettingsAll Users_qbothome~e198ac781b.tmp
C:Documents And SettingsAll Users_qbothome~e439125sl.tmp
C:Documents And SettingsAll Users_qbothome~efd9452.tmp

Delete registry entries:

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun”[Name of Legit Program*]” = “”C:Documents And SettingsAll Users_qbothome_qbotinj.exe” “C:Documents And SettingsAll Users_qbothome_qbot.dll” /c [Legit Program File Path*]”

* “Name of Legit App” and “Legit App File Path” refers to an existing, legitimate application on your PC that the worm has chosen at random.

DIY W32.Qakbot Removal Instructions

Start by removing the above files. If you're not sure how to do this, refer to the instructions below.

Note: In any files I mention above, “%UserProfile%” is a variable referring to your current user’s profile folder. (Not an iEuphemism for muth@fugg@#*!@.) So if you’re using Windows NT/2000/XP/7, by default this is “C:\Documents and Settings\[CURRENT USER]” (e.g., “C:\Documents and Settings\NoahFence”).

How to Manually Delete Badware Files

Need some removing badware files help? No biggie. While you should only manually delete badware files if you're comfy editing your system, you'll find it's pretty easy. And probably really satisfying.

How to delete badware files in Windows XP/Vista/7:

  1. Click your Windows Start menu, then click "Search."
  2. A pop up will ask, "What do you want to search for?" Click "All files and folders."
  3. Type a badware file in the search box, and select "Local Hard Drives."
  4. Click "Search." Once the badware file is found, delete it.

How to stop badware processes:

  1. Click the Start menu, select Run.
  2. Type taskmgr.exe into the the Run command box, and click "OK." You can also launch the Task Manager by pressing keys CTRL + Shift + ESC.
  3. Click Processes tab, and find badware processes.
  4. Once you've found the badware processes, right-click them and select "End Process" to kill badware.

badware processes

How to remove badware registry keys:

Backup your registry before you edit it. Then...

  1. Click the Start menu, and click "Run." An "Open" field will appear. Type "regedit" and click "OK " to open up your Registry Editor. In Windows 7, just type "regedit" into the "Search programs and files" box in the Start menu.
  2. Registry Editor opens as a two-paned window: the left side lets you select registry keys,the right side shows the values of any selected registry key.
  3. To find a badware registry key, select "Edit," then select "Find," and in the search bar type any of badware 's registry keys.
  4. When the badware registry key appears, to delete the badware registry key, right-click it, and select "Modify," then select "Delete."

Deleting badware Registry Keys

How to delete badware DLLs:

  1. Open the Start menu, and click "Run." Type "cmd" in Run, and click "OK." (In Windows 7, just type "regedit" into the "Search programs and files" box in the Start menu.)
  2. To change your current directory, type "cd" in the command box, press "Space," and enter the full directory where the badware DLL is located. If you're not sure where the badware DLL is located, enter "dir" in the command box to display a directory's contents. To go one directory back, type "cd .." in the command box and press "Enter."
  3. When you've found a badware DLL, type "regsvr32 /u SampleDLLName.dll" (e.g., "regsvr32 /u jl27script.dll") and press "Enter."

That's it. If you want to restore any badware DLL you removed, type "regsvr32 DLLJustDeleted.dll" (e.g., "regsvr32 jl27script.dll") into your command box, and press "Enter."

Did badware change your homepage?

  1. Select Start menu > Control Panel > Internet Options > General.
  2. Type your preferred home page's URL.
  3. Click "Use Default," "Apply," and "OK."