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Win32.HLLW.Autoruner.41151

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

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /I'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /J'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /S'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /F'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /Y'
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3863931848] 'Name' = '%TEMP%\2.tmp'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /M'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /o'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /N'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /D'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /w'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vkheop' = '%HOMEPATH%\vkheop.exe /C'
Creates the following files on removable media:
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Documents.lnk
  • <Drive name for removable media>:\Video.lnk
  • <Drive name for removable media>:\Music.lnk
  • <Drive name for removable media>:\Passwords.lnk
  • <Drive name for removable media>:\vkheop.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\vkheopx.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • '%HOMEPATH%\ctlop.exe'
  • '%HOMEPATH%\dtlop.exe'
  • '%HOMEPATH%\btlop.exe'
  • '%HOMEPATH%\atlop.exe'
  • '%HOMEPATH%\vkheop.exe'
Executes the following:
  • '<SYSTEM32>\cmd.exe' /c ""%HOMEPATH%\a.bat" "
  • '<SYSTEM32>\cmd.exe' /c ""%TEMP%\7ZSfx000.cmd" "
  • '<SYSTEM32>\tasklist.exe'
  • '<SYSTEM32>\svchost.exe'
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
  • <SYSTEM32>\spoolsv.exe
the following user processes:
  • firefox.exe
  • iexplore.exe
  • safari.exe
  • msnmsgr.exe
  • ICQ.exe
  • YahooMessenger.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
Modifies file system :
Creates the following files:
  • %TEMP%\Aqz..bat
  • %HOMEPATH%\a.bat
  • %TEMP%\1.tmp
  • %TEMP%\7ZSfx000.cmd
  • %WINDIR%\Temp\3.tmp
  • %HOMEPATH%\btlop.exe
  • %HOMEPATH%\atlop.exe
  • %HOMEPATH%\ctlop.exe
  • %HOMEPATH%\vkheop.exe
  • %HOMEPATH%\dtlop.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\vkheop.exe
  • <Drive name for removable media>:\vkheopx.exe
  • %HOMEPATH%\vkheop.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %TEMP%\2.tmp
  • %WINDIR%\Temp\3.tmp
  • %TEMP%\7ZSfx000.cmd
  • %HOMEPATH%\atlop.exe
  • %HOMEPATH%\btlop.exe
  • %HOMEPATH%\ctlop.exe
Moves the following files:
  • from %HOMEPATH%\dtlop.exe to %TEMP%\4.tmp
  • from %TEMP%\1.tmp to %TEMP%\2.tmp
Deletes itself.
Network activity:
Connects to:
  • 'ta##hare.in':80
UDP:
  • DNS ASK ta##hare.in
  • DNS ASK mo##lla.com
  • DNS ASK ra###share.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'SkinuxWindow' WindowName: 'MySpaceIM with Skype'
  • ClassName: 'Indicator' WindowName: '(null)'

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