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Profil

Win32.HLLW.Autoruner.52974

Added to the Dr.Web virus database: 2011-07-01

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\csrss.exe"'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\csrss.exe"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Adobe' = '%APPDATA%\Adobe\adobe.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\csrss.exe"'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\SYSTEM.EXE
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\csrss.exe' = '%APPDATA%\csrss.exe:*:Enabled:CityScape'
Creates and executes the following:
  • %APPDATA%\csrss.exe 
  • %APPDATA%\Adobe\adobe.exe 
Executes the following:
  • <SYSTEM32>\netsh.exe firewall add allowedprogram "%APPDATA%\csrss.exe" CityScape Enable
  • <SYSTEM32>\reg.exe ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Adobe" /t REG_SZ /d "%APPDATA%\Adobe\adobe.exe" /f
  • <SYSTEM32>\cmd.exe /c """%TEMP%\GVsBu.bat"" "
Modifies file system :
Creates the following files:
  • %APPDATA%\DCxtqmpx
  • %APPDATA%\csrss.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\locate_my_ip[1]
  • %TEMP%\GVsBu.bat
  • %APPDATA%\Adobe\adobe.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\SYSTEM.EXE
  • <Drive name for removable media>:\Autorun.inf
  • %APPDATA%\Adobe\adobe.exe
  • %APPDATA%\csrss.exe
Deletes the following files:
  • %APPDATA%\DCxtqmpx
  • %TEMP%\GVsBu.bat
Network activity:
Connects to:
  • 'v1#####ate.dyndns.org':3177
  • 'www.ma##ind.com':80
  • 'localhost':1036
TCP:
HTTP GET requests:
  • www.ma##ind.com/app/locate_my_ip
UDP:
  • DNS ASK v1#####ate.dyndns.org
  • DNS ASK www.ma##ind.com
Miscellaneous:
Searches for the following windows:
  • ClassName: '' WindowName: 'HB'
  • ClassName: 'Indicator' WindowName: ''