Win32.HLLW.Autoruner.61849

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'nuyug' = '%HOMEPATH%\nuyug.exe /n'

Creates the following files on removable media:

<Drive name for removable media>:\Passwords.exe
<Drive name for removable media>:\RCX3.tmp
<Drive name for removable media>:\RCX2.tmp
<Drive name for removable media>:\RCX6.tmp
<Drive name for removable media>:\RCX5.tmp
<Drive name for removable media>:\RCX4.tmp
<Drive name for removable media>:\Secret.exe
<Drive name for removable media>:\nuyug.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\RCX1.tmp
<Drive name for removable media>:\Sexy.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%\nuyug.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\nuyug.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\nuyug.exe
<Drive name for removable media>:\autorun.inf
%HOMEPATH%\nuyug.exe

Deletes the following files:

<Drive name for removable media>:\Passwords.exe
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\Sexy.exe

Network activity:

Connects to:

'ns#.##ayer1532.com':8003

UDP:

DNS ASK ns#.##ayer1532.com
'<Private IP address>':1034

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''

Tecnologías

Términos

Formación y educación

Mitos

Technical Information