Win32.HLLW.Autoruner2.38923

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /U'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /P'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /m'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /O'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /X'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'guovi' = '%HOMEPATH%\guovi.exe /l'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\SacN.ico
<Drive name for removable media>:\guovi.exe
<Drive name for removable media>:\guovix.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%\guovi.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\guovi.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\SacN.ico
<Drive name for removable media>:\guovi.exe
<Drive name for removable media>:\guovix.exe

Network activity:

Connects to:

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

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\guovi.exe'

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Technical Information