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Added to the Dr.Web virus database: 2014-08-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '678475f004f9e993ce45f9535b0f61f2' = '"%TEMP%\dllhoste.exe" ..'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '678475f004f9e993ce45f9535b0f61f2' = '"%TEMP%\dllhoste.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\dllhoste.exe' = '%TEMP%\dllhoste.exe:*:Enabled:dllhoste.exe'
Creates and executes the following:
  • '%TEMP%\dllhoste.exe'
Executes the following:
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\dllhoste.exe" "dllhoste.exe" ENABLE
Modifies file system :
Creates the following files:
  • %TEMP%\dllhoste.exe
Network activity:
Connects to:
  • '':5552
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
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Doctor Web is the Russian developer of Dr.Web anti-virus software. Dr.Web anti-virus software has been developed since 1992.

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