Win32.HLLW.Autoruner2.16972
Added to the Dr.Web virus database:
2014-08-20
Virus description added:
2014-08-20
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'a7739beea7c489c1e549fc5663a85700' = '"%WINDIR%\explorerr.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'a7739beea7c489c1e549fc5663a85700' = '"%WINDIR%\explorerr.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\a7739beea7c489c1e549fc5663a85700.exe
- %HOMEPATH%\Start Menu\Programs\Startup\Server.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\explorerr.exe' = '%WINDIR%\explorerr.exe:*:Enabled:explorerr.exe'
Creates and executes the following:
- '%WINDIR%\explorerr.exe'
- '%TEMP%\WindowsApplication1.exe'
- '%TEMP%\Server.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\explorerr.exe" "explorerr.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\WindowsApplication1.exe
- %WINDIR%\explorerr.exe
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
- %TEMP%\Server.exe
Deletes the following files:
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
Network activity:
Connects to:
UDP:
- DNS ASK ha####14c.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
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