Win32.HLLW.Autoruner.11206
Added to the Dr.Web virus database:
2012-09-15
Virus description added:
2012-10-07
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{9B71D88C-C598-4935-C5D1-43AA4DB90836}] 'stubpath' = ''
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
Malicious functions:
Creates and executes the following:
- %TEMP%\IXP000.TMP\server.exe
Injects code into
the following system processes:
Searches for windows to
detect analytical utilities:
- ClassName: 'pediy06' WindowName: ''
- ClassName: 'GBDYLLO' WindowName: ''
- ClassName: 'OLLYDBG' WindowName: ''
Hides the following processes:
- %PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE
Modifies file system :
Creates the following files:
- <SYSTEM32>\Bifrost\server.exe
- %APPDATA%\addon.dat
- %TEMP%\IXP000.TMP\server.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\addon.dat
- <SYSTEM32>\Bifrost\server.exe
Deletes the following files:
- %TEMP%\IXP000.TMP\server.exe
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