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Win32.HLLW.Autoruner2.13876
Added to the Dr.Web virus database:
2014-05-05
Virus description added:
2014-05-06
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ef6805c25b5a2f877bc96e021971597e' = '"%TEMP%\lsass.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ef6805c25b5a2f877bc96e021971597e' = '"%TEMP%\lsass.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\ef6805c25b5a2f877bc96e021971597e.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\lsass.exe' = '%TEMP%\lsass.exe:*:Enabled:lsass.exe'
Creates and executes the following:
'%TEMP%\Security.exe'
'%TEMP%\lsass.exe'
'%HOMEPATH%\Local Settings\TempWindows.exe'
'%TEMP%\Security.exe' (downloaded from the Internet)
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\lsass.exe" "lsass.exe" ENABLE
Modifies file system :
Creates the following files:
%TEMP%\Security.exe
%TEMP%\lsass.exe
%HOMEPATH%\Local Settings\TempWindows.exe
Network activity:
Connects to:
'fi###melt.com':80
'sk###.myftp.biz':1177
'wp#d':80
TCP:
HTTP GET requests:
fi###melt.com/downloader/Windows_Update.exe
wp#d/wpad.dat
UDP:
DNS ASK fi###melt.com
DNS ASK sk###.myftp.biz
DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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