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Trojan.KillProc.22963
Added to the Dr.Web virus database:
2013-03-30
Virus description added:
2013-04-09
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\DDHelper.lnk
%ALLUSERSPROFILE%\Start Menu\Programs\Startup\DualDesk.lnk
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe' = '%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe:*:Enabled:DualDesk-Server'
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
%TEMP%\nsb12.tmp\ns20.tmp REG.EXE DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service" /f
%TEMP%\nsb12.tmp\ns1F.tmp REG.EXE DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service\Enum" /f
%TEMP%\nsb12.tmp\ns22.tmp "netsh.exe" firewall delete allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" CURRENT
%TEMP%\nsb12.tmp\ns21.tmp "netsh.exe" firewall delete allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" ALL
%TEMP%\nsb12.tmp\ns1E.tmp REG.EXE DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service\Security" /f
%TEMP%\nsb12.tmp\ns1B.tmp REG.EXE DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\DD-ShowSuperHidden" /f
%TEMP%\nsb12.tmp\ns1A.tmp REG.EXE DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\DD-Hidden" /f
%TEMP%\nsb12.tmp\ns1D.tmp REG.EXE DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DDHelper" /f
%TEMP%\nsb12.tmp\ns1C.tmp REG.EXE DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DDExe" /f
%TEMP%\nsb12.tmp\ns23.tmp REG.EXE DELETE "HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\DualDesk-Server" /f
%TEMP%\nsb12.tmp\ns2A.tmp cmd.exe /C RMDIR /S /Q "%TEMP%\DDTmp2"
%TEMP%\nsb12.tmp\ns29.tmp cmd.exe /C RMDIR /S /Q "%TEMP%\DDTmp1"
%TEMP%\nsb12.tmp\ns2C.tmp cmd.exe /C RMDIR /S /Q "%PROGRAM_FILES%\DD20.4.3201210230039"
%TEMP%\nsb12.tmp\ns2B.tmp cmd.exe /C RMDIR /S /Q "%PROGRAM_FILES%\DD20.4.3201210230039"
%TEMP%\nsb12.tmp\ns28.tmp cmd.exe /C del /P /Q "%PROGRAM_FILES%\DD20.4.3201210230039\DD.txt"
%TEMP%\nsb12.tmp\ns25.tmp cmd.exe /C RMDIR /S /Q "%TEMP%\DDTmp1"
%TEMP%\nsb12.tmp\ns24.tmp cmd.exe /C del /P /Q "%PROGRAM_FILES%\DD20.4.3201210230039\DD.txt"
%TEMP%\nsb12.tmp\ns27.tmp cmd.exe /C RMDIR /S /Q "%PROGRAM_FILES%\DD20.4.3201210230039"
%TEMP%\nsb12.tmp\ns26.tmp cmd.exe /C RMDIR /S /Q "%TEMP%\DDTmp2"
%TEMP%\nso6.tmp\nsC.tmp "netsh.exe" firewall add allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" "DualDesk-Server" ENABLE ALL
%TEMP%\nso6.tmp\nsB.tmp "%PROGRAM_FILES%\DD20.4.3201210230039\Uninst.exe"
%PROGRAM_FILES%\DD20.4.3201210230039\DDHelper.exe
%TEMP%\nso6.tmp\nsD.tmp "netsh.exe" firewall add allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" "DualDesk-Server" ENABLE
%TEMP%\nso6.tmp\nsA.tmp ""
%TEMP%\nso6.tmp\ns7.tmp "sc.exe" delete DD_Service
%TEMP%\nsa3.tmp\DD_71.43.226.122_3207.exe /13712953201-1481539430_Riversoft Inc./0
%TEMP%\nso6.tmp\ns9.tmp "net.exe" stop DD_Service
%TEMP%\nso6.tmp\ns8.tmp "sc.exe" delete DD_CAD
%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe
%TEMP%\nsb12.tmp\ns17.tmp "taskkill.exe" /F /IM DDHelper.exe /T
%TEMP%\nsb12.tmp\ns16.tmp "tskill.exe" DDHelper
%TEMP%\nsb12.tmp\ns19.tmp "taskkill.exe" /F /IM DualDesk.exe /T
%TEMP%\nsb12.tmp\ns18.tmp "tskill.exe" DualDesk
%TEMP%\nsb12.tmp\ns15.tmp "net.exe" stop DD_Service
%TEMP%\A~ADVANTIGu_.exe _?=%PROGRAM_FILES%\DD20.4.3201210230039\
%PROGRAM_FILES%\DD20.4.3201210230039\Uninst.exe
%TEMP%\nsb12.tmp\ns14.tmp "sc.exe" delete DD_CAD
%TEMP%\nsb12.tmp\ns13.tmp "sc.exe" delete DD_Service
Executes the following:
<SYSTEM32>\reg.exe DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\DD-ShowSuperHidden" /f
<SYSTEM32>\reg.exe DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DDExe" /f
<SYSTEM32>\taskkill.exe /F /IM DualDesk.exe /T
<SYSTEM32>\reg.exe DELETE "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\DD-Hidden" /f
<SYSTEM32>\reg.exe DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DDHelper" /f
<SYSTEM32>\reg.exe DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service" /f
<SYSTEM32>\reg.exe DELETE "HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\DualDesk-Server" /f
<SYSTEM32>\reg.exe DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service\Security" /f
<SYSTEM32>\reg.exe DELETE "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\DD_Service\Enum" /f
<SYSTEM32>\net.exe stop DD_Service
<SYSTEM32>\net1.exe stop DD_Service
<SYSTEM32>\sc.exe delete DD_Service
<SYSTEM32>\sc.exe delete DD_CAD
<SYSTEM32>\netsh.exe firewall add allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" "DualDesk-Server" ENABLE ALL
<SYSTEM32>\taskkill.exe /F /IM DDHelper.exe /T
<SYSTEM32>\tskill.exe DualDesk
<SYSTEM32>\netsh.exe firewall add allowedprogram "%PROGRAM_FILES%\DD20.4.3201210230039\DualDesk.exe" "DualDesk-Server" ENABLE
<SYSTEM32>\tskill.exe DDHelper
Network activity:
Connects to:
'71.##.226.122':3207
'www.du###esk.com':80
'localhost':1038
TCP:
HTTP GET requests:
www.du###esk.com/unreg/1-1481539430.txt
UDP:
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'DualDesk Tray Icon' WindowName: ''
ClassName: '' WindowName: ''
ClassName: 'DualDesk desktop sink' WindowName: ''
ClassName: '#32770' WindowName: ''
ClassName: 'SysListView32' WindowName: ''
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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
Download Dr.Web for Android
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