Win32.HLLW.Autoruner1.25666

Added to the Dr.Web virus database: 2012-09-10

Virus description added: 2012-10-01

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Corp' = '%TEMP%\alg.exe '
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Corp' = '%TEMP%\alg.exe '

Creates the following files on removable media:

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\alg.exe' = '%TEMP%\alg.exe:*:Enabled:alg'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\alg.exe ' = '%TEMP%\alg.exe :*:Enabled:Microsoft Corp'

Creates and executes the following:

Executes the following:

Modifies file system :

Creates the following files:

C:\Pictures.lnk
C:\Music.lnk
C:\Files.lnk
C:\Videos.lnk
C:\USB.lnk
C:\Settings.lnk
C:\Documents.lnk
<SYSTEM32>\importantdoc.tmp
%TEMP%\alg.exe
<SYSTEM32>\Shortcut.exe
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\explorer[1].txt
C:\Show All Files.lnk
C:\driver\info\Explorer.exe
C:\driver\info\explorer.dll

Sets the 'hidden' attribute to the following files:

Network activity:

Connects to:

TCP:

HTTP GET requests:

UDP:

Miscellaneous:

Searches for the following windows: