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Win32.HLLM.MyDoom.1342

Added to the Dr.Web virus database: 2012-01-03

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = 'c:\install\google.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = 'c:\install\google.exe'
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = 'c:\install\google.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = 'c:\install\google.exe'
  • [<HKLM>\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{0L4P4NS8-2I15-DVMA-VKRE-7173VE240051}] 'StubPath' = 'c:\install\google.exe Restart'
  • [<HKLM>\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{0L4P4NS8-2I15-DVMA-VKRE-7173VE240051}] 'StubPath' = 'c:\install\google.exe'
Malicious functions
Injects code into
the following system processes:
  • %WINDIR%\syswow64\explorer.exe
  • %WINDIR%\explorer.exe
Modifies file system
Creates the following files
  • %TEMP%\crypted.exe
  • C:\install\google.exe
  • %TEMP%\xx--xx--xx.txt
  • %TEMP%\43.jpg
  • %APPDATA%\logs.dat
  • %TEMP%\xxx.xxx
  • %TEMP%\uuu.uuu
Sets the 'hidden' attribute to the following files
  • C:\install\google.exe
  • %APPDATA%\logs.dat
Deletes the following files
  • %TEMP%\xx--xx--xx.txt
  • %TEMP%\uuu.uuu
  • %TEMP%\xxx.xxx
Substitutes the following files
  • %TEMP%\uuu.uuu
  • %TEMP%\xxx.xxx
Network activity
UDP
  • DNS ASK ho####.zapto.org
Miscellaneous
Creates and executes the following
  • '%TEMP%\crypted.exe'
  • 'C:\install\google.exe'
  • 'C:\install\google.exe' ' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\explorer.exe'