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Win32.HLLW.Autoruner1.52547
Added to the Dr.Web virus database:
2013-07-31
Virus description added:
2013-08-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Winlogon' = '%WINDIR%\winlogon.exe'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\autorun.exe
Malicious functions:
Creates and executes the following:
'%WINDIR%\winhelp32.exe' /pid=1064
'%WINDIR%\winhelp32.exe' /pid=640
'%WINDIR%\winhelp32.exe' /pid=1072
'%WINDIR%\winhelp32.exe' /pid=2984
'%WINDIR%\winhelp32.exe' /pid=352
'%WINDIR%\winhelp32.exe' /pid=2812
'%WINDIR%\winlogon.exe'
'%WINDIR%\winhelp32.exe'
'%WINDIR%\winhelp32.exe' /pid=3984
'%WINDIR%\winhelp32.exe' /pid=3256
'%WINDIR%\winhelp32.exe' (downloaded from the Internet)
Modifies file system :
Creates the following files:
%TEMP%\a22.exe
%TEMP%\a19.exe
%TEMP%\a60.exe
%TEMP%\a8.exe
%TEMP%\a99.exe
%TEMP%\a35.exe
%TEMP%\a33.exe
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\DATA[1]
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\default2[1].html
%WINDIR%\winlogon.exe
%WINDIR%\version.txt
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\VERSION[1].TXT
%WINDIR%\winhelp32.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.exe
<Drive name for removable media>:\autorun.inf
Deletes the following files:
<Drive name for removable media>:\autorun.exe
Network activity:
Connects to:
'tu###eru.net':80
'tu###eru.org':80
'localhost':1035
'in####.powweb.com':80
TCP:
HTTP GET requests:
tu###eru.org/VERSION.TXT
tu###eru.net/DATA
in####.powweb.com/default2.html
UDP:
DNS ASK tu###eru.org
DNS ASK tu###eru.net
DNS ASK in####.powweb.com
Miscellaneous:
Searches for the following windows:
ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'Indicator' WindowName: '(null)'
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