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Added to the Dr.Web virus database: 2012-02-01

Virus description added:

Technical Information

To ensure autorun and distribution:
Substitutes the following executable system files:
  • <SYSTEM32>\userinit.exe with <SYSTEM32>\userinit.exe
  • <SYSTEM32>\dllcache\userinit.exe with <SYSTEM32>\dllcache\userinit.exe
Malicious functions:
Executes the following:
  • <SYSTEM32>\rundll32.exe
Modifies file system :
Creates the following files:
  • <SYSTEM32>\skbuwa.dll
  • <SYSTEM32>\hvkuvl.dll
Deletes the following files:
  • <SYSTEM32>\userinit.exe
  • <SYSTEM32>\dllcache\userinit.exe
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Doctor Web is the Russian developer of Dr.Web anti-virus software. Dr.Web anti-virus software has been developed since 1992.

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