Win32.HLLW.Autoruner2.37858

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'vioidos' = '%HOMEPATH%\vioidos.exe /s'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\USNt.ico
<Drive name for removable media>:\vioidos.exe
<Drive name for removable media>:\vioidosx.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\Passwords.lnk
<Drive name for removable media>:\Documents.lnk
<Drive name for removable media>:\Pictures.lnk
<Drive name for removable media>:\Music.lnk
<Drive name for removable media>:\Video.lnk

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

Modifies file system:

Creates the following files:

%HOMEPATH%\vioidos.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\vioidos.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\USNt.ico
<Drive name for removable media>:\vioidos.exe
<Drive name for removable media>:\vioidosx.exe

Network activity:

Connects to:

'ns#.##ayer1532.com':8000

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\vioidos.exe'

Tecnologías

Términos

Formación y educación

Mitos

Technical Information