Win32.HLLW.Autoruner2.38731

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /X'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'legob' = '%HOMEPATH%\legob.exe /f'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\CXX.ico
<Drive name for removable media>:\legob.exe
<Drive name for removable media>:\legobx.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\Passwords.lnk
<Drive name for removable media>:\Documents.lnk
<Drive name for removable media>:\Pictures.lnk
<Drive name for removable media>:\Music.lnk
<Drive name for removable media>:\Video.lnk

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%\legob.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\legob.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\CXX.ico
<Drive name for removable media>:\legob.exe
<Drive name for removable media>:\legobx.exe

Network activity:

Connects to:

'ns#.##ayer1532.com':8000

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\legob.exe'

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Technical Information