Win32.HLLW.Autoruner2.38032

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /d'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'buuah' = '%HOMEPATH%\buuah.exe /v'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\tgr.ico
<Drive name for removable media>:\buuah.exe
<Drive name for removable media>:\buuahx.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%\buuah.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\buuah.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\tgr.ico
<Drive name for removable media>:\buuah.exe
<Drive name for removable media>:\buuahx.exe

Network activity:

Connects to:

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

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\buuah.exe'

Tecnologie

Termini

Formazione ed informazione

Falsi miti

Technical Information