Win32.HLLW.Autoruner.63859

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yvnaas' = '%HOMEPATH%\yvnaas.exe /U'

Creates the following files on removable media:

<Drive name for removable media>:\Documents.lnk
<Drive name for removable media>:\Passwords.lnk
<Drive name for removable media>:\Pictures.lnk
<Drive name for removable media>:\Video.lnk
<Drive name for removable media>:\Music.lnk
<Drive name for removable media>:\PAWt.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\yvnaas.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\yvnaasx.exe

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

Creates and executes the following:

%HOMEPATH%\yvnaas.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\yvnaas.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\yvnaas.exe
<Drive name for removable media>:\yvnaasx.exe
<Drive name for removable media>:\PAWt.ico
%HOMEPATH%\yvnaas.exe
<Drive name for removable media>:\autorun.inf

Network activity:

Connects to:

'ns#.##ayer1532.com':8001

UDP:

DNS ASK ns#.##ayer1532.com
'<Private IP address>':1035

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''

テクノロジー

用語

トレーニングコースおよび啓蒙プロジェクト

アンチウイルスに関する誤解と噂

Technical Information