W32.Spex.Worm is an encrypted worm that attempts to spread itself through the KaZaA and iMesh file-sharing networks.
The worm drops itself to %System%\iexplore32.exe and to a variety of files in the %Windir%\Drivers32 folder. Then, W32.Spex.Worm shares the %Windir%\Drivers32 folder through KaZaA and iMesh.
Additional information:
The worm dropped the following files:
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Need for Speed Underground Crack.exe
Need for Speed Underground Serial.exe
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Csak óvatosan!