Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '%WINDIR%\system\csrws.exe' = '%WINDIR%\system\csrws.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\SamSascsrs(REC)] 'ImagePath' = '%WINDIR%\system\csrws.exe'
- [<HKLM>\SYSTEM\ControlSet001\Services\SamSascsrs(REC)] 'Start' = '00000002'
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\wscript.exe' "C:\0.vbs"
Executes the following:
- '%WINDIR%\system\csrws.exe'
Modifies file system:
Creates the following files:
- C:\0.vbs
- %WINDIR%\system\csrws.exe
Sets the 'hidden' attribute to the following files:
- %WINDIR%\system\csrws.exe
Deletes the following files:
- C:\0.vbs
Deletes itself.
Network activity:
Connects to:
- 'www.zu##ihu.cn':363
UDP:
- DNS ASK www.zu##ihu.cn
