Win32.HLLW.Autoruner.55974

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /E'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /t'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /U'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /H'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /D'
[<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\3221226944] 'Name' = '"%TEMP%\2.tmp"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'woaobi' = '%HOMEPATH%\woaobi.exe /Z'

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>:\SlQa.ico
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\woaobi.exe
<Drive name for removable media>:\New Folder.lnk
<Drive name for removable media>:\woaobix.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%\gnergy.exe
%HOMEPATH%\spooldx.exe (downloaded from the Internet)
%HOMEPATH%\woaobi.exe
%HOMEPATH%\fnergy.exe
%HOMEPATH%\armast.exe
%HOMEPATH%\Dhjd3y0Y5Nt3CLPqGVJ8.exe
%HOMEPATH%\energy.exe

Executes the following:

<SYSTEM32>\tasklist.exe

Injects code into

the following system processes:

<SYSTEM32>\spoolsv.exe

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1A10' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{AEBA21FA-782A-4A90-978D-B72164C80120}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '{A8A88C49-5EB2-4990-A1A2-0876022C854F}' = ''
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'

Modifies file system :

Creates the following files:

%HOMEPATH%\woaobi.exe
%TEMP%\1.tmp
%WINDIR%\Temp\3.tmp
%TEMP%\Rlb..bat
%HOMEPATH%\spooldx.exe
%HOMEPATH%\armast.dll
%HOMEPATH%\Dhjd3y0Y5Nt3CLPqGVJ8.exe
%HOMEPATH%\armast.exe
%HOMEPATH%\energy.exe
%HOMEPATH%\gnergy.exe
%HOMEPATH%\fnergy.exe

Sets the 'hidden' attribute to the following files:

<Drive name for removable media>:\woaobi.exe
<Drive name for removable media>:\woaobix.exe
<Drive name for removable media>:\SlQa.ico
%HOMEPATH%\woaobi.exe
<Drive name for removable media>:\autorun.inf

Deletes the following files:

%HOMEPATH%\Dhjd3y0Y5Nt3CLPqGVJ8.exe
%HOMEPATH%\fnergy.exe
%WINDIR%\Temp\3.tmp
%TEMP%\2.tmp
<DRIVERS>\etc\hosts

Deletes itself.

Network activity:

Connects to:

'bl###ound.in':80
'ag###roosi.com':80

TCP:

HTTP GET requests:

ag###roosi.com/xxx

HTTP POST requests:

bl###ound.in/?in##############################################################################################################

UDP:

DNS ASK go##le.ae
DNS ASK bl###ound.in
DNS ASK ag###roosi.com
DNS ASK ik##.com
DNS ASK si###ell.com

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' WindowName: ''
ClassName: 'Shell_TrayWnd' WindowName: ''

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Technical Information