Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'File Service' = '"<SYSTEM32>\$sysvit64$\sysvit64.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'KIKW' = 'wscript /B /E:vbscript <SYSTEM32>\zbhvnby.cun /File Service'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Microsoft® Windows® Operating System' = '"<SYSTEM32>\$prefetch$\serivces.exe"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft® Windows® Operating System' = '"<SYSTEM32>\$prefetch$\serivces.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ytvr.rgi
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\$prefetch$\serivces.exe'
- '<SYSTEM32>\$sysvit64$\sysvit64.exe'
Executes the following:
- '<SYSTEM32>\attrib.exe' +H "E:\ytvr.rgi"
- '<SYSTEM32>\attrib.exe' +H "E:\autorun.inf"
- '<SYSTEM32>\attrib.exe' +H "Z:\autorun.inf"
- '<SYSTEM32>\attrib.exe' -H "<SYSTEM32>\$sysvit64$\sysvit64.tmp"
- '<SYSTEM32>\attrib.exe' +H "Z:\rwxe.ibl"
- '<SYSTEM32>\attrib.exe' +H "<SYSTEM32>\$sysvit64$\sysvit64.ocx"
- '<SYSTEM32>\attrib.exe' +H "<SYSTEM32>\$prefetch$\serivces.exe"
- '<SYSTEM32>\attrib.exe' -H "<SYSTEM32>\$prefetch$\serivces.exe"
- '<SYSTEM32>\attrib.exe' -H "<SYSTEM32>\$sysvit64$\sysvit64.exe"
- '<SYSTEM32>\attrib.exe' +H "<SYSTEM32>\$sysvit64$\sysvit64.exe"
- '<SYSTEM32>\attrib.exe' -H "<SYSTEM32>\$sysvit64$\sysvit64.ocx"
Modifies file system :
Creates the following files:
- <SYSTEM32>\$prefetch$\serivces.dll
- <SYSTEM32>\zbhvnby.cun
- <SYSTEM32>\$sysvit64$\sysvit64.tmp
- <SYSTEM32>\$prefetch$\serivces.exe
- <SYSTEM32>\$sysvit64$\sysvit64.exe
- <SYSTEM32>\$sysvit64$\sysvit64.ocx
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\ytvr.rgi
- <SYSTEM32>\$sysvit64$\sysvit64.ocx
- <SYSTEM32>\$prefetch$\serivces.exe
- <SYSTEM32>\$sysvit64$\sysvit64.exe
Deletes the following files:
- <SYSTEM32>\$sysvit64$\sysvit64.tmp
Modifies the HOSTS file.
