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Trojan.Click2.21896

Added to the Dr.Web virus database: 2012-04-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe] 'Debugger' = '0'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Printspooler' = '%PROGRAM_FILES%\spooler.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft netswitch' = '<SYSTEM32>\jwtch32.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe] 'Debugger' = '0'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\spooler.exe' = '%PROGRAM_FILES%\spooler.exe:*:Enabled:otmspr'
Creates and executes the following:
  • <SYSTEM32>\jwtch32.exe
  • %PROGRAM_FILES%\spooler.exe
Executes the following:
  • %PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://www.un####sal101.com/pt.php
Modifies settings of Windows Internet Explorer:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'Flags' = '00000020'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1001' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1004' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2300' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2301' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1209' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '120A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1400' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1201' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1206' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1208' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A02' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A03' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A05' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1805' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1809' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '180A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A06' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2102' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2104' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2105' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2000' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2101' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1A10' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2000' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2101' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1A03' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1A05' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1A06' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2102' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2300' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2301' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] 'Flags' = '00000020'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2104' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2105' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1407' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1605' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1607' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1402' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1405' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1406' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1608' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1809' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '180A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1A02' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1609' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1804' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1805' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1804' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1609' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1804' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1805' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1605' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1607' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1608' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1809' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1A05' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1A06' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1A10' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '180A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1A02' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1A03' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1201' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1206' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1208' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1001' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1004' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1209' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1405' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1406' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1407' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '120A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1400' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1402' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '120A' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1402' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1206' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1208' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1209' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1405' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1607' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1608' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1407' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1605' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2104' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2105' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2000' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2101' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2102' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2300' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1004' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1200' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1201' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2301' = '00000000'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] 'Flags' = '00000020'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1001' = '00000000'
Modifies file system :
Creates the following files:
  • %PROGRAM_FILES%\spooler.exe
  • <SYSTEM32>\jwtch32.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: '' 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.
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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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