Win32.HLLW.Autoruner2.13368

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /m'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /X'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /O'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'grtuod' = '%HOMEPATH%\grtuod.exe /A'

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>:\grtuod.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%\grtuod.exe'

Modifies file system :

Creates the following files:

%HOMEPATH%\grtuod.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\grtuod.exe
<Drive name for removable media>:\autorun.inf
%HOMEPATH%\grtuod.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#.###nsearcher.net':8000

UDP:

DNS ASK ns#.###nsearcher.net

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: '(null)'

Tecnologías

Términos

Formación y educación

Mitos

Technical Information