Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update' = '%HOMEPATH%\Templates\isexplorer.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Sys.exe
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
- User Account Control (UAC)
Executes the following:
- '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
Modifies file system :
Creates the following files:
- C:\autorun.inf
- C:\Sys.exe
- %HOMEPATH%\Templates\isexplorer.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Sys.exe
- <Drive name for removable media>:\autorun.inf
- C:\Sys.exe
- C:\autorun.inf
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'