Win32.HLLW.Autoruner2.41020

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /U'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /f'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /O'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /P'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /X'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'bcgiuw' = '%HOMEPATH%\bcgiuw.exe /n'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\vbs.ico
<Drive name for removable media>:\bcgiuw.exe
<Drive name for removable media>:\bcgiuwx.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%\bcgiuw.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\bcgiuw.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\vbs.ico
<Drive name for removable media>:\bcgiuw.exe
<Drive name for removable media>:\bcgiuwx.exe

Network activity:

Connects to:

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

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\bcgiuw.exe'

Tecnologie

Termini

Formazione ed informazione

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Technical Information