Win32.HLLW.Autoruner2.833
Added to the Dr.Web virus database:
2013-12-29
Virus description added:
2013-12-30
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'b5fcb93b20e0701448a5da45b11f90bc' = '"%TEMP%\svchot.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'b5fcb93b20e0701448a5da45b11f90bc' = '"%TEMP%\svchot.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\svchot.exe' = '%TEMP%\svchot.exe:*:Enabled:svchot.exe'
Creates and executes the following:
- '%TEMP%\svchot.exe'
- '%TEMP%\213.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\svchot.exe" "svchot.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\svchot.exe
- %TEMP%\213.exe
Network activity:
UDP:
- DNS ASK mc####1.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
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