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Win32.HLLW.Autoruner1.63136

Added to the Dr.Web virus database: 2013-12-08

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Avirnt' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{C72JB736-MBBO-M7Q5-2M4U-E1O6HXRL3233}] 'StubPath' = '%APPDATA%\System32\svchost.exe Restart'
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{C72JB736-MBBO-M7Q5-2M4U-E1O6HXRL3233}] 'StubPath' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies' = ''
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Avgnt' = ''
Malicious functions:
Creates and executes the following:
  • '%APPDATA%\System32\svchost.exe'
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %TEMP%\XxX.xXx
  • %TEMP%\UuU.uUu
  • %APPDATA%\logs.dat
  • %APPDATA%\System32\svchost.exe
  • %TEMP%\XX--XX--XX.txt
Sets the 'hidden' attribute to the following files:
  • %APPDATA%\logs.dat
  • %APPDATA%\System32\svchost.exe
Deletes the following files:
  • %TEMP%\UuU.uUu
  • %TEMP%\XxX.xXx
  • <SYSTEM32>\svchost.exe
  • %TEMP%\XX--XX--XX.txt
Network activity:
Connects to:
  • 'm3##.no-ip.org':50552
  • 'm3##.no-ip.org':50551
  • 'm3##.no-ip.biz':50551
  • 'm3##.no-ip.org':50553
  • 'm3##.no-ip.info':50553
  • 'm3##.no-ip.biz':50553
  • 'm3##.no-ip.biz':50552
  • 'm3##.no-ip.info':50552
  • 'm3##.no-ip.info':50551
UDP:
  • DNS ASK m3##.no-ip.org
  • DNS ASK m3##.no-ip.info
  • DNS ASK m3##.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'Indicator' WindowName: '(null)'