Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run] 'IDT PC audio' = '%WINDIR%\svhost.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'IDT PC audio' = '%WINDIR%\svhost.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'IDT PC audio' = '%WINDIR%\svhost.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\svhost.exe' = '%WINDIR%\svhost.exe:*:Enabled:IDT PC audio'
Creates and executes the following:
- %WINDIR%\svhost.exe
Executes the following:
- <SYSTEM32>\netsh.exe firewall add allowedprogram "%WINDIR%\svhost.exe" "MSN Messenger" ENABLE
Terminates or attempts to terminate
the following user processes:
- ekrn.exe
Modifies file system :
Creates the following files:
- %WINDIR%\svhost.exe
Sets the 'hidden' attribute to the following files:
- %WINDIR%\svhost.exe
- <Full path to virus>
Network activity:
UDP:
- DNS ASK wc#.###ain-crawlers.com
- '<Private IP address>':1036
Miscellaneous:
Searches for the following windows:
- ClassName: 'Address Band Root' WindowName: ''
- ClassName: 'ReBarWindow32' WindowName: ''
- ClassName: 'WorkerW' WindowName: ''
- ClassName: 'ComboBox' WindowName: ''
- ClassName: 'ComboBoxEx32' WindowName: ''
- ClassName: 'msctls_statusbar32' WindowName: ''
- ClassName: 'Internet Explorer_Server' WindowName: ''
- ClassName: 'IEFrame' WindowName: ''
- ClassName: 'HTMLSOURCEVIEW' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell DocObject View' WindowName: ''
- ClassName: 'TabWindowClass' WindowName: ''
- ClassName: 'Frame Tab' WindowName: ''