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Win32.HLLW.Autoruner1.53084
Added to the Dr.Web virus database:
2013-08-07
Virus description added:
2013-08-07
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe, <SYSTEM32>\SysConfig.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe <SYSTEM32>\SysConfig.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft' = '<SYSTEM32>\SysConfig.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SystemConfiguration' = '<SYSTEM32>\SysConfig.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'winlogon' = '<SYSTEM32>\SysConfig.exe'
Creates the following files on removable media:
<Drive name for removable media>:\readme.txt
<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\SysConfig.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
hidden files
file extensions
blocks execution of the following system utilities:
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
Creates and executes the following:
'<SYSTEM32>\SysConfig.exe'
Executes the following:
'%WINDIR%\explorer.exe' <SYSTEM32>
Terminates or attempts to terminate
the following system processes:
the following user processes:
NAVAPW32.EXE
AVPCC.EXE
zapro.exe
AVP.EXE
ZONEALARM.EXE
AVGCC32.EXE
AVGCTRL.EXE
avgcc.exe
AVPM.EXE
AVSYNMGR.EXE
Searches for windows to
detect programs and games:
ClassName: '(null)' WindowName: 'Yahoo! Messenger'
Modifies settings of Windows Explorer:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies file system :
Creates the following files:
C:\SysConfig.exe
C:\Autorun.inf
C:\readme.txt
<SYSTEM32>\readme.txt
<SYSTEM32>\SysConfig.exe
Sets the 'hidden' attribute to the following files:
C:\Autorun.inf
<Drive name for removable media>:\SysConfig.exe
<Drive name for removable media>:\Autorun.inf
<SYSTEM32>\readme.txt
<SYSTEM32>\SysConfig.exe
C:\SysConfig.exe
Deletes the following files:
%TEMP%\~DF5ED6.tmp
%TEMP%\~DFE564.tmp
%TEMP%\~DFA9EE.tmp
%TEMP%\~DF5202.tmp
%TEMP%\~DF436D.tmp
%TEMP%\~DF899E.tmp
%TEMP%\~DF2B88.tmp
%TEMP%\~DFC5BD.tmp
%TEMP%\~DF6C86.tmp
%TEMP%\~DF22D5.tmp
%TEMP%\~DFFF5E.tmp
%TEMP%\~DF738D.tmp
Miscellaneous:
Searches for the following windows:
ClassName: '(null)' WindowName: 'Run'
ClassName: '(null)' WindowName: 'Kaspersky Anti-Virus 7.0'
ClassName: '(null)' WindowName: 'Command Prompt'
ClassName: '' WindowName: '(null)'
ClassName: '(null)' WindowName: 'Autorun.inf - Notepad'
ClassName: '(null)' WindowName: 'Google - Microsoft Internet Explorer'
ClassName: '(null)' WindowName: 'Windows Media Player'
ClassName: '(null)' WindowName: 'Friendster - Home - Microsoft Internet Explorer'
ClassName: '(null)' WindowName: 'templates.htt - Notepad'
ClassName: '(null)' WindowName: 'Yahoo! - Microsoft Internet Explorer'
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