Win32.HLLW.Autoruner.57898

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /s'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /i'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /A'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wefeh' = '%HOMEPATH%\wefeh.exe /W'

Creates the following files on removable media:

<Drive name for removable media>:\Passwords.exe
<Drive name for removable media>:\RCX3.tmp
<Drive name for removable media>:\RCX2.tmp
<Drive name for removable media>:\RCX6.tmp
<Drive name for removable media>:\RCX5.tmp
<Drive name for removable media>:\RCX4.tmp
<Drive name for removable media>:\Secret.exe
<Drive name for removable media>:\wefeh.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\Porn.exe
<Drive name for removable media>:\RCX1.tmp
<Drive name for removable media>:\Sexy.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%\wefeh.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\wefeh.exe

Sets the 'hidden' attribute to the following files:

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

Deletes the following files:

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

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