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Win32.HLLW.Autoruner1.34319
Added to the Dr.Web virus database:
2013-03-23
Virus description added:
2013-04-01
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe] 'debugger' = '%WINDIR%\driver.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe] 'debugger' = '%WINDIR%\driver.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe] 'debugger' = '<SYSTEM32>\dllcache\c_38153.nls'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'R3815249' = '%WINDIR%\driver.exe /repair'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'System' = '%WINDIR%\driver.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wuauclt.exe] 'debugger' = '%WINDIR%\driver.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe] 'debugger' = '<SYSTEM32>\dllcache\c_38153.nls'
[<HKLM>\SOFTWARE\Classes\nlsfile\shell\open\command] '' = '"%1"'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\procexp.exe] 'debugger' = '<SYSTEM32>\dllcache\c_38153.nls'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dumprep.exe] 'debugger' = '%WINDIR%\driver.exe'
[<HKLM>\SOFTWARE\Classes\scrfile\shell\open\command] '' = '"<SYSTEM32>\dllcache\c_38153.nls" "%1" %*'
Creates or modifies the following files:
<SYSTEM32>\winboot32\winnt.exe
Creates the following files on removable media:
<Drive name for removable media>:\backup.exe
<Drive name for removable media>:\Autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
hidden files
file extensions
Creates and executes the following:
<SYSTEM32>\3891\winexec.exe
%TEMP%\38239 711823624.exe
Executes the following:
%WINDIR%\msagent\agentsvr.exe -Embedding
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
<SYSTEM32>\dllcache\c_38153.nls
C:\Autorun.inf
C:\backup.exe
%WINDIR%\driver.exe
%TEMP%\38239 711823624.exe
<SYSTEM32>\3891\winexec.exe
Sets the 'hidden' attribute to the following files:
C:\backup.exe
<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\backup.exe
<SYSTEM32>\winboot32\winnt.exe
%WINDIR%\driver.exe
C:\Autorun.inf
Deletes the following files:
%TEMP%\~DF2A9.tmp
%TEMP%\~DFC719.tmp
%TEMP%\38239 711823624.exe.tmp
Miscellaneous:
Searches for the following windows:
ClassName: 'IEFrame' WindowName: ''
ClassName: 'Edit' WindowName: ''
ClassName: 'ComboBox' WindowName: ''
ClassName: 'ExploreWClass' WindowName: ''
ClassName: 'Address Band Root' WindowName: ''
ClassName: 'WorkerW' WindowName: 'Navigation Bar'
ClassName: 'ThunderRT6FormDC' WindowName: 'SERVICES.EXE '
ClassName: 'Indicator' WindowName: ''
ClassName: 'PROCEXPL' WindowName: ''
ClassName: 'ComboBoxEx32' WindowName: ''
ClassName: 'ReBarWindow32' WindowName: ''
ClassName: 'WorkerW' WindowName: ''
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