Win32.HLLW.Autoruner2.15719
Added to the Dr.Web virus database:
2014-06-21
Virus description added:
2014-06-22
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '254624a9f8433cce6ca38cb102851ec3' = '"%TEMP%\shamss.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '254624a9f8433cce6ca38cb102851ec3' = '"%TEMP%\shamss.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\shamss.exe' = '%TEMP%\shamss.exe:*:Enabled:shamss.exe'
Creates and executes the following:
- '%TEMP%\shamss.exe'
- '%HOMEPATH%\Local Settings\Tempserver.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\shamss.exe" "shamss.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\shamss.exe
- %HOMEPATH%\Local Settings\Tempserver.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
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