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Win32.HLLW.Autoruner2.52901
Added to the Dr.Web virus database:
2019-07-21
Virus description added:
2019-07-24
Technical Information
To ensure autorun and distribution
Modifies the following registry keys
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe %WINDIR%\<File name>.exe'
[<HKLM>\Software\Microsoft\Windows\CurrentVersion\Run] 'WinShell' = '%WINDIR%\<File name>.exe'
Creates the following files on removable media
<Drive name for removable media>:\<File name>.exe
<Drive name for removable media>:\autorun.inf
Modifies file system
Creates the following files
C:\<File name>.exe
C:\autorun.inf
D:\<File name>.exe
D:\autorun.inf
%WINDIR%\<File name>.exe
Miscellaneous
Searches for the following windows
ClassName: '' WindowName: 'Registry Editor'
ClassName: '' WindowName: 'System Configuration Utility'
ClassName: '' WindowName: 'Windows Task Manager'
ClassName: '' WindowName: 'command.com'
ClassName: '' WindowName: 'cmd.exe'
ClassName: '' WindowName: 'Command Prompt'
ClassName: '' WindowName: 'Search Results'
ClassName: '' WindowName: 'Close'
ClassName: '' WindowName: 'StartUp'
ClassName: '' WindowName: '3ВЅ Floppy (A:)'
Creates and executes the following
'<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /t REG_SZ /d "explorer.exe %WINDIR%\<File name>.exe" /f' (with hidden window)
'<SYSTEM32>\reg.exe' ADD HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v WinShell /t REG_SZ /d %WINDIR%\<File name>.exe /f' (with hidden window)
'<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer /v WinShell /t REG_SZ /d %WINDIR%\<File name>.exe /f' (with hidden window)
Executes the following
'<SYSTEM32>\reg.exe' ADD "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /t REG_SZ /d "explorer.exe %WINDIR%\<File name>.exe" /f
'<SYSTEM32>\reg.exe' ADD HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v WinShell /t REG_SZ /d %WINDIR%\<File name>.exe /f
'<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer /v WinShell /t REG_SZ /d %WINDIR%\<File name>.exe /f
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