Win32.HLLW.Autoruner1.34789

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /P'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pcpuif' = '%HOMEPATH%\pcpuif.exe /U'

Creates the following files on removable media:

<Drive name for removable media>:\Documents.lnk
<Drive name for removable media>:\Passwords.lnk
<Drive name for removable media>:\Pictures.lnk
<Drive name for removable media>:\Video.lnk
<Drive name for removable media>:\Music.lnk
<Drive name for removable media>:\sHs.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\pcpuif.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\pcpuifx.exe

Malicious functions:

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files

Creates and executes the following:

%HOMEPATH%\pcpuif.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\pcpuif.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\pcpuif.exe
<Drive name for removable media>:\pcpuifx.exe
<Drive name for removable media>:\sHs.ico
%HOMEPATH%\pcpuif.exe
<Drive name for removable media>:\autorun.inf

Network activity:

Connects to:

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

UDP:

DNS ASK ns#.##ayer1532.com

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''

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Technical Information