Win32.HLLW.Autoruner1.49702
Added to the Dr.Web virus database:
2013-07-19
Virus description added:
2013-07-19
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] 'Windows Services' = 'csrs.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Services' = 'csrs.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\usb_driver.com
- <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\Desktop.ini
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\31.exe' = '%TEMP%\31.exe:*:Enabled:Windows Services'
Creates and executes the following:
- '%WINDIR%\csrs.exe'
- '%TEMP%\31.exe'
- '%TEMP%\31.sfx.exe' -pzx
Injects code into
the following system processes:
Modifies file system :
Creates the following files:
- %WINDIR%\csrs.exe
- %TEMP%\31.exe
- %TEMP%\31.sfx.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\usb_driver.com
- %WINDIR%\csrs.exe
Network activity:
UDP:
- DNS ASK p2#.##avestin.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'EDIT' WindowName: '(null)'
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