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Trojan.AVKill.11274

Added to the Dr.Web virus database: 2011-10-06

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\Shortcut to startup_local.lnk
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
Executes the following:
  • <SYSTEM32>\taskkill.exe /f /im 360se.exe /t
  • <SYSTEM32>\taskkill.exe /f /im MSN Explorer.exe /t
  • <SYSTEM32>\taskkill.exe /f /im QQMusic.exe /t
  • <SYSTEM32>\taskkill.exe /f /im sogouExplorer exe /t
  • <SYSTEM32>\taskkill.exe /f /im kav32.exe /t
  • <SYSTEM32>\taskkill.exe /f /im dr.com /t
  • <SYSTEM32>\taskkill.exe /f /im qq.exe /t
  • <SYSTEM32>\taskkill.exe /f /im taskmgr.exe /t
Terminates or attempts to terminate
the following user processes:
  • dnf.exe
  • chrome.exe
Modifies file system :
Creates the following files:
  • <Current directory>\hknms.sys
  • <SYSTEM32>\WinIo.dll
  • <SYSTEM32>\winio.vxd
Sets the 'hidden' attribute to the following files:
  • <Current directory>\hknms.sys
Deletes the following files:
  • <Current directory>\hknms.sys
Moves the following system files:
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Narrator.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Narrator.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Magnifier.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Magnifier.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Windows Explorer.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Windows Explorer.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Entertainment\Windows Media Player.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Entertainment\Windows Media Player.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Utility Manager.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\Utility Manager.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\On-Screen Keyboard.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Accessibility\On-Screen Keyboard.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Tour Windows XP.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Tour Windows XP.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Command Prompt.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Command Prompt.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Windows Media Player.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Windows Media Player.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Remote Assistance.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Remote Assistance.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Synchronize.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Synchronize.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Program Compatibility Wizard.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Program Compatibility Wizard.exe
  • from <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Notepad.lnk to <SYSTEM32>\config\systemprofile\Start Menu\Programs\Accessories\Notepad.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: 'QQ????.exe'
  • ClassName: '' WindowName: 'my.exe'
  • ClassName: '' WindowName: 'KuGoo.exe'
  • ClassName: '' WindowName: 'QQGame.exe'
  • ClassName: '' WindowName: 'CrossFire.exe'
  • ClassName: '' WindowName: 'ui_launch_dx_bak.exe'
  • ClassName: '' WindowName: 'imeutil.exe'
  • ClassName: '' WindowName: 'ThunderNB.exe'
  • ClassName: '' WindowName: 'plantsvszombies.exe.exe'
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: '' WindowName: 'NOTEPAD.exe'
  • ClassName: '' WindowName: 'SoftManager.exe'
  • ClassName: '' WindowName: 'Thunder.exe'
  • ClassName: '' WindowName: 'chrome.exe'
  • ClassName: '' WindowName: ''
  • ClassName: '' WindowName: 'ComputerZ_CN.exe'
  • ClassName: '' WindowName: 'AliIM.exe'
  • ClassName: '' WindowName: 'TheWorld.exe'
  • ClassName: '' WindowName: 'Maxthon.exe'
  • ClassName: '' WindowName: 'ComputerMonZ.exe'
  • ClassName: '' WindowName: 'duospeak.exe'
  • ClassName: '' WindowName: 'KartRider.exe'
  • ClassName: '' WindowName: 'DNF.exe'
  • ClassName: '' WindowName: 'QQLive.exe'
  • ClassName: '' WindowName: 'QvodPlayer.exe'
  • ClassName: '' WindowName: 'QvodTerminal.exe'

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

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