Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'firewall 2008' = '<SYSTEM32>\logoneui.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe logoneui.exe'
Creates or modifies the following files:
- %WINDIR%\Tasks\At1.job
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\logoneui.exe
- <Drive name for removable media>:\Maradona.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\winlogon.exe' = '<SYSTEM32>\winlogon.exe:*:enabled:@shell32.dll,-1'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Executes the following:
- '<SYSTEM32>\logonui.exe' /status /shutdown
- '<SYSTEM32>\at.exe' 22:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\logoneui.exe
- '<SYSTEM32>\at.exe' /delete /yes
Injects code into
the following system processes:
- <SYSTEM32>\winlogon.exe
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\cmd.exe
the following user processes:
- avgcc.exe
Restores hooked functions in System Service Descriptor Table (SSDT).
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NofolderOptions' = '00000001'
Sets a new unauthorized home page for Windows Internet Explorer.
Attempts to shut down the Windows operating system.
Modifies file system :
Creates the following files:
- C:\Jojo.exe
- <SYSTEM32>\autorun.ini
- C:\autorun.inf
- C:\logoneui.exe
- %WINDIR%\Web\connection.dat
- <SYSTEM32>\logoneui.exe
- C:\info.bat
- <SYSTEM32>\boote\boot.ini
Sets the 'hidden' attribute to the following files:
- C:\autorun.inf
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\logoneui.exe
- <SYSTEM32>\autorun.ini
Network activity:
Connects to:
- 'zh##ia.com':443
- 'mo##ym.com':443
- 'te##eo.com':443
- 'ih##ob.com':443
- 'oi##hi.com':443
- 'ky##vi.com':443
- 'xw##vs.com':443
- 'il#.#renz.pl':80
- 'an#.#renz.pl':80
- 'fr##zk.com':443
- 'zl##la.com':443
UDP:
- DNS ASK zh##ia.com
- DNS ASK mo##ym.com
- DNS ASK te##eo.com
- DNS ASK ih##ob.com
- DNS ASK oi##hi.com
- DNS ASK ky##vi.com
- DNS ASK xw##vs.com
- DNS ASK il#.#renz.pl
- DNS ASK an#.#renz.pl
- DNS ASK fr##zk.com
- DNS ASK zl##la.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'StatusWindowClass' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'