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Added to the Dr.Web virus database: 2011-12-04

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MicrosoftВ® WindowsВ® Operating System' = '%TEMP%\System\lsam.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\] 'Audio Treiber x64' = '%APPDATA%\AudioTreiber_x64.exe'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\] 'Audio Treiber x64' = '%APPDATA%\AudioTreiber_x64.exe'
Malicious functions
To bypass firewall, removes or modifies the following registry keys
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\System\MapCmdRun.exe' = '%TEMP%\System\MapCmdRun.exe:*:Enab...
Injects code into
the following user processes:
  • audiotreiber_x64.exe
Modifies file system
Creates the following files
  • %TEMP%\system\mapcmdrun.exe
  • %TEMP%\system\lsam.exe
  • %APPDATA%\audiotreiber_x64.exe
Sets the 'hidden' attribute to the following files
  • %TEMP%\system\lsam.exe
  • %TEMP%\system\mapcmdrun.exe
Network activity
Creates and executes the following
  • '%TEMP%\system\lsam.exe'
  • '%TEMP%\system\mapcmdrun.exe'
  • '%APPDATA%\audiotreiber_x64.exe'

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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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