Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\nyk.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '1318437393' = '<LS_APPDATA>\nyk.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>\nyk.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%\o24gb881a463dr4k802812s148yxsxyb21au7hmvsw1
- %HOMEPATH%\Templates\o24gb881a463dr4k802812s148yxsxyb21au7hmvsw1
- %ALLUSERSPROFILE%\Application Data\o24gb881a463dr4k802812s148yxsxyb21au7hmvsw1
- <LS_APPDATA>\nyk.exe
- <LS_APPDATA>\o24gb881a463dr4k802812s148yxsxyb21au7hmvsw1
Deletes itself.
Network activity:
Connects to:
- 'mo###ymalyp.com':80
- 'fe###ohuxek.com':80
- 'bu####wafypevy.com':80
- 'ju###eler.com':80
- 'ro####hidixa.com':80
- 'te###azij.com':80
- 'da###usato.com':80
- 'fu####wulevu.com':80
- 'by####romyvi.com':80
- 'te####wapucumu.com':80
- 'ru###adix.com':80
- 'qy###iboveh.com':80
- 'be####gyluzus.com':80
- 'qu####jalyfa.com':80
- 'ri###ijaxus.com':80
- 'ti####kemosa.com':80
- 'my####viqilo.com':80
- 'dy###ujen.com':80
- 'ca####hirecyci.com':80
- 'ny###yxaz.com':80
- 'do###omosu.com':80
- 'ce###emiz.com':80
- 'wa####tixybuk.com':80
- 'wu####kydorovy.com':80
- 'ji####gavade.com':80
UDP:
- DNS ASK da###usato.com
- DNS ASK qy###iboveh.com
- DNS ASK by####romyvi.com
- DNS ASK fu####wulevu.com
- DNS ASK bu####wafypevy.com
- DNS ASK fe###ohuxek.com
- DNS ASK ru###adix.com
- DNS ASK te####wapucumu.com
- DNS ASK hu###ivuz.com
- DNS ASK ne###avyn.com
- DNS ASK li###esagis.com
- DNS ASK microsoft.com
- DNS ASK xi###esaf.com
- DNS ASK la####paweno.com
- DNS ASK da####decamur.com
- DNS ASK xa####catewuk.com
- DNS ASK mo###ymalyp.com
- DNS ASK ti####kemosa.com
- DNS ASK ri###ijaxus.com
- DNS ASK wu####kydorovy.com
- DNS ASK wa####tixybuk.com
- DNS ASK dy###ujen.com
- DNS ASK my####viqilo.com
- DNS ASK qu####jalyfa.com
- DNS ASK ca####hirecyci.com
- DNS ASK ju###eler.com
- DNS ASK be####gyluzus.com
- DNS ASK te###azij.com
- DNS ASK ro####hidixa.com
- DNS ASK ny###yxaz.com
- DNS ASK ji####gavade.com
- DNS ASK ce###emiz.com
- DNS ASK do###omosu.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'msascui_class' WindowName: ''
