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Trojan.AVKill.7200

Added to the Dr.Web virus database: 2011-06-28

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\sre.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '3038655801' = '<LS_APPDATA>\sre.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '<SYSTEM32>\ctfmon.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'EnableFirewall' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
To complicate detection of its presence in the operating system,
blocks the following features:
  • Windows Security Center
Creates and executes the following:
  • <LS_APPDATA>\sre.exe -gav <Full path to virus>
Terminates or attempts to terminate
the following user processes:
  • chrome.exe
  • opera.exe
  • iexplore.exe
  • firefox.exe
Modifies file system :
Creates the following files:
  • %TEMP%\cek0sa3co42l63ty77x7p374xdrsc0837m6u2qq76l
  • %HOMEPATH%\Templates\cek0sa3co42l63ty77x7p374xdrsc0837m6u2qq76l
  • %ALLUSERSPROFILE%\Application Data\cek0sa3co42l63ty77x7p374xdrsc0837m6u2qq76l
  • <LS_APPDATA>\sre.exe
  • <LS_APPDATA>\cek0sa3co42l63ty77x7p374xdrsc0837m6u2qq76l
Deletes itself.
Network activity:
Connects to:
  • 'wu####xuboly.com':80
  • 'za###eduhyb.com':80
  • 'ku###yfybex.com':80
  • 'ja####kuxilufo.com':80
  • 'zy####muzosa.com':80
  • 'wu####dejypo.com':80
UDP:
  • DNS ASK jo####tuhowa.com
  • DNS ASK ti###iwof.com
  • DNS ASK le###alyri.com
  • DNS ASK ny###usofo.com
  • DNS ASK he####kejepuvo.com
  • DNS ASK qa####hucewupo.com
  • DNS ASK gy###atimak.com
  • DNS ASK da####kidepo.com
  • DNS ASK xe###agyxut.com
  • DNS ASK dy####cojame.com
  • DNS ASK sa####fupacamy.com
  • DNS ASK si####pofeti.com
  • DNS ASK le###esax.com
  • DNS ASK xo###ehyni.com
  • DNS ASK so###yjek.com
  • DNS ASK vy###aneh.com
  • DNS ASK za###eduhyb.com
  • DNS ASK ku###yfybex.com
  • DNS ASK bo####qexise.com
  • DNS ASK wu####xuboly.com
  • DNS ASK ja####kuxilufo.com
  • DNS ASK zy####muzosa.com
  • DNS ASK wu####dejypo.com
  • DNS ASK wy###ylys.com
  • DNS ASK jo###ijito.com
  • DNS ASK go###udesu.com
  • DNS ASK du####bimude.com
  • DNS ASK jo###umehyn.com
  • DNS ASK li###ibam.com
  • DNS ASK my####nybihy.com
  • DNS ASK py###ujij.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'msascui_class' WindowName: ''

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.
Download Dr.Web

Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  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.

Find out more about Dr.Web for Android