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Win32.HLLW.Autohit.9058

Added to the Dr.Web virus database: 2009-06-01

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'csrcs' = '<SYSTEM32>\csrcs.exe'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Modifies file system
Creates the following files
  • %TEMP%\autab89.tmp
  • %TEMP%\gixacjv
  • %WINDIR%\syswow64\csrcs.exe
  • %TEMP%\autbec3.tmp
  • %TEMP%\iirkwwc
  • %TEMP%\suicide.bat
Sets the 'hidden' attribute to the following files
  • %WINDIR%\syswow64\csrcs.exe
Deletes the following files
  • %TEMP%\autab89.tmp
  • %TEMP%\gixacjv
  • %TEMP%\autbec3.tmp
  • %TEMP%\iirkwwc
  • %TEMP%\suicide.bat
Substitutes the following files
  • %TEMP%\suicide.bat
Deletes itself.
Miscellaneous
Creates and executes the following
  • '%WINDIR%\syswow64\csrcs.exe'
  • '%WINDIR%\syswow64\cmd.exe' /c %TEMP%\suicide.bat' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c %TEMP%\suicide.bat
  • '%WINDIR%\syswow64\ping.exe' -n 5 -w 250 127.0.0.1
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