Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\svchost.exe
Creates the following files on removable media:
- <Drive name for removable media>:\Bloc-notes.exe
- <Drive name for removable media>:\cmtcsp.pif
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- <Auxiliary element>
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\YhPIFCpo.exe' = '%TEMP%\YhPIFCpo.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\svchost.exe'
- '%TEMP%\YhPIFCpo.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\vbc3.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /noconfig @"%TEMP%\l_oitykg.cmdline"
Injects code into
the following system processes:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\vbc3.tmp
- %TEMP%\RES4.tmp
- %TEMP%\l_oitykg.exe
- %TEMP%\wingsxmvn.exe
- <DRIVERS>\ionel.sys
- %TEMP%\wkwbj.exe
- C:\autorun.inf
- %TEMP%\kxvrhu.exe
- %TEMP%\apqvks.exe
- %TEMP%\winlomsd.exe
- C:\twpn.exe
- %TEMP%\cvjwie.exe
- %TEMP%\wintgcwyk.exe
- %TEMP%\~TM1.tmp
- %TEMP%\~TM2.tmp
- %TEMP%\winypjdd.exe
- %TEMP%\FhARAC.resources
- %TEMP%\YhPIFCpo.exe
- %TEMP%\svchost.exe
- %TEMP%\P871J653l.resources
- %TEMP%\l_oitykg.out
- %TEMP%\simv.exe
- %TEMP%\MSNPSharp.dll
- %TEMP%\l_oitykg.0.vb
- %TEMP%\l_oitykg.cmdline
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\cmtcsp.pif
- C:\autorun.inf
- C:\twpn.exe
Deletes the following files:
- %TEMP%\l_oitykg.exe
- %TEMP%\l_oitykg.cmdline
- %TEMP%\l_oitykg.0.vb
- %TEMP%\l_oitykg.out
- %TEMP%\cvjwie.exe
- %TEMP%\apqvks.exe
- %TEMP%\winlomsd.exe
- %TEMP%\wintgcwyk.exe
- %TEMP%\kxvrhu.exe
- %TEMP%\winypjdd.exe
- %TEMP%\simv.exe
- %TEMP%\~TM1.tmp
- %TEMP%\~TM2.tmp
- %TEMP%\wingsxmvn.exe
- %TEMP%\RES4.tmp
- %TEMP%\vbc3.tmp
- <DRIVERS>\ionel.sys
- %TEMP%\wkwbj.exe
Network activity:
Connects to:
- '17#.#3.169.14':80
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: '' WindowName: '(null)'
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'