Win32.HLLW.Autoruner.60115

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /P'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yoesaug' = '%HOMEPATH%\yoesaug.exe /T'

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>:\yoesaug.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%\yoesaug.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\yoesaug.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\yoesaug.exe
<Drive name for removable media>:\autorun.inf
%HOMEPATH%\yoesaug.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':8000

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''

Technologies

Terminology

Training and education

Myths

Technical Information