Win32.HLLW.Autoruner2.35897

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /P'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /A'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\moowei.exe
<Drive name for removable media>:\Secret.exe
<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\RCX1.tmp

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%\moowei.exe

Sets the 'hidden' attribute to the following files:

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

Deletes the following files:

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

Substitutes the following files:

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

Network activity:

Connects to:

'ns#.##ayer1352.com':8000

UDP:

DNS ASK ns#.##ayer1352.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\moowei.exe'

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Technical Information