Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\oyy.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '502353609' = '<LS_APPDATA>\oyy.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>\oyy.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%\4yx23w000m6771t3ne5b
- %HOMEPATH%\Templates\4yx23w000m6771t3ne5b
- %ALLUSERSPROFILE%\Application Data\4yx23w000m6771t3ne5b
- <LS_APPDATA>\oyy.exe
- <LS_APPDATA>\4yx23w000m6771t3ne5b
Deletes itself.
Network activity:
Connects to:
- 'py###ujij.com':80
- 'my####viqilo.com':80
- 'gy###atimak.com':80
- 'za###eduhyb.com':80
- 'su###yvynuh.com':80
- 'ny###usofo.com':80
- 'da####kidepo.com':80
- 'du####bimude.com':80
- 'ci####higilani.com':80
- 'ca####hirecyci.com':80
- 'wy###ylys.com':80
- 'li###ibam.com':80
- 'xa####catewuk.com':80
- 'jo####tuhowa.com':80
- 'qa####hucewupo.com':80
- 'ze###akyfa.com':80
- 'da####decamur.com':80
- 'bo####qexise.com':80
- 'wa####tixybuk.com':80
- 'tu####ropotit.com':80
- 'zy####muzosa.com':80
- 'wu####xuboly.com':80
- 'ti####kemosa.com':80
- 'vy###aneh.com':80
- 'cu###upivu.com':80
- 'so###yjek.com':80
- 'te###azij.com':80
- 'ja####kuxilufo.com':80
UDP:
- DNS ASK xa####catewuk.com
- DNS ASK li###ibam.com
- DNS ASK wy###ylys.com
- DNS ASK jo####tuhowa.com
- DNS ASK py###ujij.com
- DNS ASK za###eduhyb.com
- DNS ASK gy###atimak.com
- DNS ASK my####viqilo.com
- DNS ASK sa####nyzyvo.com
- DNS ASK si####pofeti.com
- DNS ASK vo###urupe.com
- DNS ASK microsoft.com
- DNS ASK ci####higilani.com
- DNS ASK du####bimude.com
- DNS ASK pi###eniwyt.com
- DNS ASK ca####hirecyci.com
- DNS ASK da####kidepo.com
- DNS ASK ze###akyfa.com
- DNS ASK qa####hucewupo.com
- DNS ASK so###yjek.com
- DNS ASK da####decamur.com
- DNS ASK tu####ropotit.com
- DNS ASK wa####tixybuk.com
- DNS ASK bo####qexise.com
- DNS ASK zy####muzosa.com
- DNS ASK vy###aneh.com
- DNS ASK ti####kemosa.com
- DNS ASK ny###usofo.com
- DNS ASK su###yvynuh.com
- DNS ASK ja####kuxilufo.com
- DNS ASK te###azij.com
- DNS ASK wu####xuboly.com
- DNS ASK cu###upivu.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'msascui_class' WindowName: ''
