Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'Windows Services' = '%APPDATA%\Windows Update Folder\Windows Update.exe'
Creates or modifies the following files
- <SYSTEM32>\tasks\nyan
Creates the following files on removable media
- <Drive name for removable media>:\svchost.exe
- <Drive name for removable media>:\delete.lnk
- <Drive name for removable media>:\join.lnk
Modifies file system
Creates the following files
- %APPDATA%\windows update folder\windows update.exe
- %APPDATA%\svchost.exe
Sets the 'hidden' attribute to the following files
- <Drive name for removable media>:\svchost.exe
Miscellaneous
Creates and executes the following
- '%APPDATA%\svchost.exe'
- '%WINDIR%\syswow64\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1' (with hidden window)
- '%WINDIR%\syswow64\schtasks.exe' /Delete /tn NYAN /F' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\schtasks.exe' /Delete /tn NYAN /F
- '%WINDIR%\syswow64\schtasks.exe' /create /tn NYAN /tr "<Full path to file>" /sc minute /mo 1
