Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Cysrun' = '%WINDIR%\Cysrun.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Cyswin' = '%WINDIR%\Cyswin.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Cysset.exe
Malicious functions:
Creates and executes the following:
- %WINDIR%\Cyswin.exe
- %WINDIR%\Cysrun.exe
Modifies file system :
Creates the following files:
- %TEMP%\Set0x2.dat
- %TEMP%\aut4.tmp
- %TEMP%\Set0x8.dat
- %TEMP%\Setting0x.Conf
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\Setting0x[1].Conf
- %WINDIR%\Cysrun.exe
- %WINDIR%\Cyswin.exe
- %TEMP%\aut1.tmp
- %TEMP%\aut2.tmp
- %TEMP%\aut3.tmp
- %TEMP%\Set0x4.dat
Sets the 'hidden' attribute to the following files:
- %TEMP%\Set0x8.dat
- <Drive name for removable media>:\Cysset.exe
- <Drive name for removable media>:\autorun.inf
- %TEMP%\Set0x2.dat
- %WINDIR%\Cyswin.exe
- %TEMP%\Set0x4.dat
- %WINDIR%\Cysrun.exe
Deletes the following files:
- %TEMP%\aut4.tmp
- %TEMP%\Setting0x.Conf
- %TEMP%\aut3.tmp
- %TEMP%\aut1.tmp
- %TEMP%\aut2.tmp
Network activity:
Connects to:
- 'ir#.##eenode.net':6667
- 'ns###up.zzl.org':80
TCP:
HTTP GET requests:
- ns###up.zzl.org/Setting0x.Conf
UDP:
- DNS ASK ir#.##eenode.net
- DNS ASK ns###up.zzl.org
