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Profil

Win32.HLLW.Autoruner1.12171

Added to the Dr.Web virus database: 2012-02-17

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'lsass' = '%ALLUSERSPROFILE%\Application Data\lsass.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe <SYSTEM32>\1096\winlogon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = '%WINDIR%\Explorer.exe %WINDIR%\apps\Microsoft\Applications\Ms-office\Ms-Word\Networking\internet\system32\TangoCharle.exe'
Creates or modifies the following files:
  • %ALLUSERSPROFILE%\Start Menu\Programs\Startup\<Virus name>.exe
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\TlntSvr] 'Start' = '00000002'
Creates the following files on removable media:
  • <Drive name for removable media>:\TangoCharle.exe
  • <Drive name for removable media>:\Asshole.exe
  • <Drive name for removable media>:\DjRemixes.exe
  • <Drive name for removable media>:\DonotLook.exe
  • <Drive name for removable media>:\Games\Games.exe
  • <Drive name for removable media>:\picnic\picnic.garbage
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Games\Games.garbage
  • <Drive name for removable media>:\picnic\picnic.exe
  • <Drive name for removable media>:\Games\MiniclipGames.exe
  • <Drive name for removable media>:\Games\flashGames.exe
  • <Drive name for removable media>:\picnic\photos.exe
  • <Drive name for removable media>:\picnic\videos.exe
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\mig33.exe
  • <Drive name for removable media>:\facebookpics.exe
  • <Drive name for removable media>:\Games.exe
  • <Drive name for removable media>:\Songs.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\tlntsvr.exe' = '<SYSTEM32>\tlntsvr.exe:*:Enabled:iexplorer'
Creates and executes the following:
  • <SYSTEM32>\msc0nfig.exe
Executes the following:
  • <SYSTEM32>\sc.exe start tlntsvr
  • <SYSTEM32>\netsh.exe firewall set allowedprogram <SYSTEM32>\tlntsvr.exe iexplorer enable
  • <SYSTEM32>\regsvr32.exe /s <SYSTEM32>\tlntsvrp.dll
  • <SYSTEM32>\tlntsvr.exe
  • <SYSTEM32>\net1.exe localgroup %USERNAME%s Redbull /add
  • <SYSTEM32>\net1.exe user Redbull 123456789 /add
  • <SYSTEM32>\sc.exe config tlntsvr start= auto
  • <SYSTEM32>\net1.exe localgroup 'remote desktop users' Redbull /add
Modifies file system :
Creates the following files:
  • %WINDIR%.exe
  • %ALLUSERSPROFILE%\Application Data\lsass.exe
  • <SYSTEM32>\1096\winlogon.exe
  • <SYSTEM32>\NT.txt
  • C:\ProgramFiles.exe
  • C:\Drivers.exe
  • %WINDIR%\apps\Microsoft\Applications\Ms-office\Ms-Word\Networking\internet\system32\TangoCharle.exe
  • %TEMP%\aut2.tmp
  • <SYSTEM32>\msc0nfig.exe
  • %TEMP%\aut1.tmp
  • %TEMP%\aut3.tmp
  • <SYSTEM32>\MSWINSCK.OCX
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\<Virus name>.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %TEMP%\aut3.tmp
  • %TEMP%\aut2.tmp
  • %TEMP%\aut1.tmp
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''