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Win32.HLLW.Autoruner1.1965

Added to the Dr.Web virus database: 2011-11-09

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'NVIDIA Media Center Library' = '%HOMEPATH%\%USERNAME%1\winlogon.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'NVIDIA Media Center Library' = '%HOMEPATH%\%USERNAME%1\winlogon.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\DrivesGuideInfo.lnk
  • <Drive name for removable media>:\DrivesGuideInfo\svchost.exe
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-9-01-3739977401-4444491267-600313374-9146\Desktop.ini
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-9-01-3739977401-4444491267-600313374-9146\svchost.exe
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)
  • User Account Control (UAC)
  • Windows Security Center
Creates and executes the following:
  • %HOMEPATH%\%USERNAME%1\winlogon.exe 
Executes the following:
  • <SYSTEM32>\svchost.exe
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
  • %HOMEPATH%\%USERNAME%1\winlogon.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-9-01-3739977401-4444491267-600313374-9146\Desktop.ini
Network activity:
Connects to:
  • '3-#############-r-y-7-g-b-3-8-9-8-4-l-j.cheaps1.info':80
  • 'wh##.amung.us':80
TCP:
HTTP GET requests:
  • wh##.amung.us/widget/l96f428it5mt/
UDP:
  • DNS ASK 3-#############-r-y-7-g-b-3-8-9-8-4-l-j.cheaps1.info
  • DNS ASK wh##.amung.us
  • '<Private IP address>':1034
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '' WindowName: 'setup'