Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Twormer' = '%WINDIR%\System\tworm.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\_usb-driver.com
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\System\tworm.exe' = '%WINDIR%\System\tworm.exe:*:Enabled:T_Worm'
Modifies file system :
Creates the following files:
- %WINDIR%\system\tworm.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\_usb-driver.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'YahooBuddyMain' WindowName: ''
