Win32.HLLW.Autoruner2.36454

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /d'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /O'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /B'

Creates the following files on removable media:

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\pvnan.exe
<Drive name for removable media>:\Secret.exe
<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\RCX1.tmp
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\RCX2.tmp
<Drive name for removable media>:\RCX3.tmp
<Drive name for removable media>:\Passwords.exe
<Drive name for removable media>:\RCX4.tmp
<Drive name for removable media>:\RCX5.tmp

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%\pvnan.exe

Sets the 'hidden' attribute to the following files:

%HOMEPATH%\pvnan.exe
<Drive name for removable media>:\autorun.inf

Deletes the following files:

<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\Passwords.exe

Substitutes the following files:

<Drive name for removable media>:\Sexy.exe
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\Passwords.exe

Network activity:

Connects to:

'ns#.##ayer1352.com':8000

UDP:

DNS ASK ns#.##ayer1352.com

Miscellaneous:

Creates and executes the following:

'%HOMEPATH%\pvnan.exe'

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Technical Information