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Win32.HLLW.Autoruner.9667

Added to the Dr.Web virus database: 2012-04-27

Virus description added:

Technical Information

Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
  • file extensions
Creates and executes the following:
  • <SYSTEM32>\systen32.exe 2
Executes the following:
  • <SYSTEM32>\net.exe stop sharedaccess
  • <SYSTEM32>\find.exe /i "??????"
  • <SYSTEM32>\net1.exe stop sharedaccess
  • <SYSTEM32>\sc.exe config schedule start= auto
  • <SYSTEM32>\sc.exe stop sharedaccess
  • <SYSTEM32>\cmd.exe /c <SYSTEM32>\down.bat
  • %WINDIR%\explorer.exe <Virus name>
  • <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\Currentversion\Explorer\Advanced /v Hidden /t REG_DWORD /d 0 /f
  • <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\Currentversion\Explorer\Advanced /v HideFileExt /t REG_DWORD /d 1 /f
  • <SYSTEM32>\reg.exe add HKCU\Software\Microsoft\Windows\Currentversion\Explorer\Advanced /v ShowSuperHidden /t REG_DWORD /d 0 /f
Modifies file system :
Creates the following files:
  • <SYSTEM32>\Attusb.bat
  • <SYSTEM32>\ATT.bat
  • <SYSTEM32>\systen32.exe
  • <SYSTEM32>\mail3.vbe
  • <SYSTEM32>\down.exe
  • <SYSTEM32>\down.bat
Deletes the following files:
  • %TEMP%\~DFA708.tmp