W32/Malas-D is a worm for the Windows platform.

When first run W32/Malas-D copies itself to:

Startup\AdobeUpdate.exe
Temp\svchost.exe
User\userinit.exe
Common Files\Microsoft Shared\MSshare.exe
Program Files\XPCode\SexGame.exe
Program Files\XPCode\SexGameList.pif
Program Files\XPCode\SexScreenSaver.scr
Root\autoply.exe

and creates the following files:

Root\Autorun.inf
Startup\Office Update.lnk
Program Files\XPCode\Games.lnk
Windows\Tasks\At1.job

The file Autorun.if is detected as Mal/AutoInf-A, the other files can simply be deleted.

More information can be found at this Sophos page.