Win32.HLLW.Autoruner.53528
Added to the Dr.Web virus database:
2011-07-07
Virus description added:
2011-07-07
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe "<SYSTEM32>\wker.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\mp3_new.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
Executes the following:
- %WINDIR%\explorer.exe C:\
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies file system :
Creates the following files:
- C:\mp3_new.exe
- C:\autorun.inf
- <SYSTEM32>\wker.exe
- <SYSTEM32>\a_r.dat
Sets the 'hidden' attribute to the following files:
- C:\mp3_new.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\mp3_new.exe
- <SYSTEM32>\wker.exe
- <SYSTEM32>\a_r.dat
- C:\autorun.inf
Moves the following system files:
- from <SYSTEM32>\taskkill.exe to <SYSTEM32>\mtk.dat
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
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