Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'CSR' = '%WINDIR%\csrs.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SVT' = '%WINDIR%\svthost.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\svthost.exe
Malicious functions:
Creates and executes the following:
- '%WINDIR%\svthost.exe'
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\boi23[1].swf
- %WINDIR%\repair\check.dat
- %WINDIR%\svthost.exe
- %WINDIR%\csrs.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\svthost.exe
Network activity:
Connects to:
- 'ag######ariaarcanjo.com.br':80
TCP:
HTTP GET requests:
- ag######ariaarcanjo.com.br/boi23.swf
UDP:
- DNS ASK ag######ariaarcanjo.com.br
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WINHELP' WindowName: '(null)'
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'