Win32.HLLW.Autoruner2.7428
Added to the Dr.Web virus database:
2014-02-19
Virus description added:
2014-02-19
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '5d6c43d4bb4153cc1f32cc2466fd5e6f' = '"%HOMEPATH%\yttttt.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '5d6c43d4bb4153cc1f32cc2466fd5e6f' = '"%HOMEPATH%\yttttt.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\5d6c43d4bb4153cc1f32cc2466fd5e6f.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\yttttt.exe' = '%HOMEPATH%\yttttt.exe:*:Enabled:yttttt.exe'
Creates and executes the following:
- '%HOMEPATH%\yttttt.exe'
- '%HOMEPATH%\Local Settings\Tempserver.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\yttttt.exe" "yttttt.exe" ENABLE
Modifies file system :
Creates the following files:
- %HOMEPATH%\yttttt.exe
- %HOMEPATH%\Local Settings\Tempserver.exe
Network activity:
Connects to:
UDP:
- DNS ASK ch####n.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
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