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アンチウイルスに関する誤解と噂

ニュース

Win32.Expiro.38

Added to the Dr.Web virus database: 2011-09-04

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\RSVP] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\RDSessMgr] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\NetDDE] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\WmiApSrv] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\VSS] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\TlntSvr] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\MSIServer] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\COMSysApp] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\ClipSrv] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\CiSvc] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\mnmsrvc] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\ImapiService] 'Start' = '00000002'
  • [<HKLM>\SYSTEM\ControlSet001\Services\dmadmin] 'Start' = '00000002'
Infects the following executable system files:
  • <SYSTEM32>\vssvc.exe
  • <SYSTEM32>\wbem\wmiapsrv.exe
  • <SYSTEM32>\magnify.exe
  • <SYSTEM32>\smlogsvc.exe
  • <SYSTEM32>\tlntsvr.exe
  • <SYSTEM32>\ups.exe
  • <SYSTEM32>\narrator.exe
  • <SYSTEM32>\notepad.exe
  • <SYSTEM32>\mobsync.exe
  • <SYSTEM32>\tourstart.exe
  • <SYSTEM32>\osk.exe
  • <SYSTEM32>\utilman.exe
  • <SYSTEM32>\cmd.exe
  • <SYSTEM32>\dmadmin.exe
  • <SYSTEM32>\imapi.exe
  • <SYSTEM32>\mnmsrvc.exe
  • <SYSTEM32>\cisvc.exe
  • <SYSTEM32>\clipsrv.exe
  • <SYSTEM32>\dllhost.exe
  • <SYSTEM32>\msdtc.exe
  • <SYSTEM32>\locator.exe
  • <SYSTEM32>\rsvp.exe
  • <SYSTEM32>\scardsvr.exe
  • <SYSTEM32>\msiexec.exe
  • <SYSTEM32>\netdde.exe
  • <SYSTEM32>\sessmgr.exe
Malicious functions:
Executes the following:
  • <SYSTEM32>\sessmgr.exe
  • <SYSTEM32>\vssvc.exe
  • <SYSTEM32>\imapi.exe
  • <SYSTEM32>\cisvc.exe
  • <SYSTEM32>\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235}
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '2103' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '2103' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4] '1406' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2103' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1609' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '2103' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1609' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0] '1406' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2] '1406' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '2103' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1] '1406' = '00000000'
Modifies file system :
Creates the following files:
  • <SYSTEM32>\osk.vir
  • <SYSTEM32>\narrator.vir
  • %PROGRAM_FILES%\Outlook Express\wab.vir
  • <SYSTEM32>\utilman.vir
  • <SYSTEM32>\vssvc.vir
  • <SYSTEM32>\ups.vir
  • <SYSTEM32>\magnify.vir
  • <SYSTEM32>\wbem\wmiapsrv.vir
  • %WINDIR%\EventSystem.log
  • <SYSTEM32>\tourstart.vir
  • C:\Far\Far.vir
  • C:\wsr19zt32.dll
  • %PROGRAM_FILES%\Windows Media Player\wmplayer.vir
  • <SYSTEM32>\cmd.vir
  • <SYSTEM32>\mobsync.vir
  • <SYSTEM32>\notepad.vir
  • %WINDIR%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{166F85BB-AD9C-4B6C-A55E-5B4C76414531}.crmlog
  • <SYSTEM32>\imapi.vir
  • <SYSTEM32>\msdtc.vir
  • <SYSTEM32>\mnmsrvc.vir
  • <SYSTEM32>\clipsrv.vir
  • <SYSTEM32>\cisvc.vir
  • <SYSTEM32>\dmadmin.vir
  • <SYSTEM32>\dllhost.vir
  • <SYSTEM32>\scardsvr.vir
  • <SYSTEM32>\rsvp.vir
  • <SYSTEM32>\tlntsvr.vir
  • <SYSTEM32>\smlogsvc.vir
  • <SYSTEM32>\netdde.vir
  • <SYSTEM32>\msiexec.vir
  • <SYSTEM32>\locator.vir
  • <SYSTEM32>\sessmgr.vir
Deletes the following files:
  • <SYSTEM32>\magnify.vir
  • <SYSTEM32>\narrator.vir
  • <SYSTEM32>\osk.vir
  • <SYSTEM32>\wbem\wmiapsrv.vir
  • <SYSTEM32>\tlntsvr.vir
  • <SYSTEM32>\ups.vir
  • <SYSTEM32>\vssvc.vir
  • <SYSTEM32>\utilman.vir
  • <SYSTEM32>\mobsync.vir
  • <SYSTEM32>\tourstart.vir
  • C:\Far\Far.vir
  • <SYSTEM32>\notepad.vir
  • %PROGRAM_FILES%\Outlook Express\wab.vir
  • <SYSTEM32>\cmd.vir
  • %PROGRAM_FILES%\Windows Media Player\wmplayer.vir
  • <SYSTEM32>\imapi.vir
  • %WINDIR%\Registration\{02D4B3F1-FD88-11D1-960D-00805FC79235}.{E58DFEED-FD87-424D-B178-3D81F95917DF}.crmlog
  • <SYSTEM32>\mnmsrvc.vir
  • <SYSTEM32>\dmadmin.vir
  • <SYSTEM32>\cisvc.vir
  • <SYSTEM32>\clipsrv.vir
  • <SYSTEM32>\dllhost.vir
  • <SYSTEM32>\msdtc.vir
  • <SYSTEM32>\rsvp.vir
  • <SYSTEM32>\scardsvr.vir
  • <SYSTEM32>\smlogsvc.vir
  • <SYSTEM32>\locator.vir
  • <SYSTEM32>\msiexec.vir
  • <SYSTEM32>\netdde.vir
  • <SYSTEM32>\sessmgr.vir