Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\yjw.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '2201391676' = '<LS_APPDATA>\yjw.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>\yjw.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%\84n8svh50mj504wky4gl1v6k341p5h1362vlx7064i1
- %HOMEPATH%\Templates\84n8svh50mj504wky4gl1v6k341p5h1362vlx7064i1
- %ALLUSERSPROFILE%\Application Data\84n8svh50mj504wky4gl1v6k341p5h1362vlx7064i1
- <LS_APPDATA>\yjw.exe
- <LS_APPDATA>\84n8svh50mj504wky4gl1v6k341p5h1362vlx7064i1
Deletes itself.
Network activity:
Connects to:
- 'dy###ujen.com':80
- 'wu####kydorovy.com':80
- 'ca####hirecyci.com':80
- 'ce###emiz.com':80
- 'do###omosu.com':80
- 'su###yvynuh.com':80
- 'by####romyvi.com':80
- 'da###usato.com':80
- 'my####viqilo.com':80
- 'ne###avyn.com':80
- 'wa####tixybuk.com':80
- 'la####paweno.com':80
- 'ti####kemosa.com':80
- 'ju###eler.com':80
- 'fu####wulevu.com':80
- 'be####gyluzus.com':80
- 'te####wapucumu.com':80
- 'da####decamur.com':80
- 'ci####higilani.com':80
- 'xi###esaf.com':80
- 'xa####catewuk.com':80
- 'ji####gavade.com':80
- 'tu####ropotit.com':80
- 'qu####jalyfa.com':80
UDP:
- DNS ASK da###usato.com
- DNS ASK by####romyvi.com
- DNS ASK ri###ijaxus.com
- DNS ASK my####viqilo.com
- DNS ASK ne###avyn.com
- DNS ASK ca####hirecyci.com
- DNS ASK wa####tixybuk.com
- DNS ASK la####paweno.com
- DNS ASK xa###aron.com
- DNS ASK te###azij.com
- DNS ASK wa####xibuno.com
- DNS ASK microsoft.com
- DNS ASK mo###ymalyp.com
- DNS ASK fe###ohuxek.com
- DNS ASK ru###adix.com
- DNS ASK bu####wafypevy.com
- DNS ASK wu####kydorovy.com
- DNS ASK fu####wulevu.com
- DNS ASK ju###eler.com
- DNS ASK tu####ropotit.com
- DNS ASK ji####gavade.com
- DNS ASK te####wapucumu.com
- DNS ASK be####gyluzus.com
- DNS ASK ti####kemosa.com
- DNS ASK da####decamur.com
- DNS ASK do###omosu.com
- DNS ASK ce###emiz.com
- DNS ASK su###yvynuh.com
- DNS ASK dy###ujen.com
- DNS ASK ci####higilani.com
- DNS ASK qu####jalyfa.com
- DNS ASK xa####catewuk.com
- DNS ASK xi###esaf.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'msascui_class' WindowName: ''
