Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad] 'SysTray' = '{35CEC8A3-2BE6-11D2-8773-92E220524153}'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
blocks the following features:
- System Restore (SR)
- Windows Security Center
Executes the following:
- '%WINDIR%\regedit.exe' /s sysopter.reg
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoSMHelp' = '00000001'
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
Forces autoplay for removable media.
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- <SYSTEM32>\sysopter.reg
- %TEMP%\aut1.tmp
Deletes the following files:
- <SYSTEM32>\sysopter.reg
- %TEMP%\aut1.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'RegEdit_RegEdit' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
