Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\winwork] 'Start' = '00000002'
Infects the following executable system files:
- <DRIVERS>\beep.sys
Substitutes the following executable system files:
- <SYSTEM32>\dllcache\beep.sys with <SYSTEM32>\dllcache\beep.sys.new
Malicious functions:
Creates and executes the following:
- %WINDIR%\win32.dll
Executes the following:
- <SYSTEM32>\svchost.exe 46300
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG' WindowName: ''
- ClassName: 'FileMonClass' WindowName: ''
Modifies file system :
Creates the following files:
- <SYSTEM32>\dllcache\beep.sys.new
- %TEMP%\10707877.tmp
Sets the 'hidden' attribute to the following files:
- %WINDIR%\win32.dll
Deletes itself.
Network activity:
Connects to:
- '46###.rhelper.com':3000
UDP:
- DNS ASK 46###.rhelper.com
Miscellaneous:
Searches for the following windows:
- ClassName: '18467-41' WindowName: ''
