Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Classes\lnkfile\shell\open\command] '' = '"<SYSTEM32>\usa\SMSS.EXE" "%1" %*'
- [<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"<SYSTEM32>\usa\SMSS.EXE" "%1" %*'
- [<HKLM>\SOFTWARE\Classes\piffile\shell\open\command] '' = '"<SYSTEM32>\usa\SMSS.EXE" "%1" %*'
- [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"%1" %*'
- [<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '"<SYSTEM32>\conime.exe" "%1" %*'
- [<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"<SYSTEM32>\usa\SMSS.EXE" "%1" %*'
- [<HKLM>\SOFTWARE\Classes\VBSFile\Shell\Open\Command] '' = '"<SYSTEM32>\usa\SMSS.EXE" "%1" %*'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\usa\Lsass.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe] 'Debugger' = '<SYSTEM32>\conime.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe] 'Debugger' = '<SYSTEM32>\conime.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Taskmgr.exe] 'Debugger' = '<SYSTEM32>\sol.exe'
Substitutes the following executable system files:
- <SYSTEM32>\userinit.exe with <SYSTEM32>\userinit.exe
Creates the following files on removable media:
- <Drive name for removable media>:\AUTORUN.INF
- <Drive name for removable media>:\illinois\smss.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
Creates and executes the following:
- '<SYSTEM32>\usa\services.exe'
Terminates or attempts to terminate
the following user processes:
- nod32.exe
- MCAGENT.EXE
- bdagent.exe
- ashAvast.exe
- avgcc.exe
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoShellSearchButton' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoDrives' = ''
Modifies file system :
Creates the following files:
- <SYSTEM32>\obash.inf
- %WINDIR%\system\userinit.exe
- C:\illinois\smss.exe
- <SYSTEM32>\userinit.exe
- C:\AUTORUN.INF
- %WINDIR%\system\gpedit.msc
- <SYSTEM32>\usa\services.exe
- <SYSTEM32>\usa\csrss.exe
- <SYSTEM32>\usa\Lsass.exe
- <SYSTEM32>\usa\SMSS.EXE
Sets the 'hidden' attribute to the following files:
- C:\AUTORUN.INF
- <Drive name for removable media>:\AUTORUN.INF
- <SYSTEM32>\usa\SMSS.EXE
- <SYSTEM32>\usa\csrss.exe
Deletes the following files:
- %TEMP%\~DF9D28.tmp
- <SYSTEM32>\userinit.exe
- <SYSTEM32>\gpedit.msc
Miscellaneous:
Searches for the following windows:
- ClassName: 'ExploreWClass' WindowName: ''
- ClassName: 'CabinetWClass' WindowName: ''
- ClassName: '' WindowName: 'Local Settings'
- ClassName: 'RegEdit_RegEdit' WindowName: ''
- ClassName: '' WindowName: 'Registry Editor'
