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Win32.HLLW.Autoruner1.26080
Added to the Dr.Web virus database:
2012-09-18
Virus description added:
2012-10-09
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\autorun.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ansav.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\PCMAV-CLN.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\PCMAV-RTP.exe] 'Debugger' = 'Calc.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Grunge' = '%WINDIR%\lsass.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'SowryCuy' = '<SYSTEM32>\dlllhost.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\viremoval.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\viremover.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Classes\batfile\shell\open\command] '' = '"<SYSTEM32>\dlllhost.exe" "%1" %*'
[<HKLM>\SOFTWARE\Classes\comfile\shell\open\command] '' = '"<SYSTEM32>\dlllhost.exe" "%1" %*'
[<HKLM>\SOFTWARE\Classes\lnkfile\shell\open\command] '' = '"<SYSTEM32>\dlllhost.exe" "%1" %*'
[<HKLM>\SOFTWARE\Classes\piffile\shell\open\command] '' = '"<SYSTEM32>\dlllhost.exe" "%1" %*'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedt32.exe] 'Debugger' = 'Explorer.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\PCMAV.exe] 'Debugger' = 'Calc.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe] 'Debugger' = 'Explorer.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe] 'Debugger' = 'Explorer.exe'
Creates the following files on removable media:
<Drive name for removable media>:\AuToRuN.InF
<Drive name for removable media>:\RECYCLE.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:
blocks the following features:
Creates and executes the following:
Modifies settings of Windows Explorer:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer] 'NoFolderOptions' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Modifies settings of Windows Internet Explorer:
[<HKCU>\Software\Microsoft\Internet Explorer\Main] 'Window Title' = '.::SURG4BIJ4K Want You::.'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
C:\AuToRuN.InF
C:\RECYCLE.exe
%WINDIR%\desktop.ini
%WINDIR%\AuToRuN.InF
<Current directory>\AuToRuN.InF
%WINDIR%\lsass.exe
<SYSTEM32>\dlllhost.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\RECYCLE.exe
C:\AuToRuN.InF
%WINDIR%\AuToRuN.InF
<Drive name for removable media>:\AuToRuN.InF
C:\RECYCLE.exe
<Current directory>\AuToRuN.InF
<Full path to virus>
<SYSTEM32>\dlllhost.exe
%WINDIR%\lsass.exe
Deletes the following files:
%TEMP%\~DF22C0.tmp
%WINDIR%\desktop.ini
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
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