Question about Microsoft Windows Vista Ultimate Edition

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Vista infected trojan??

I am using an Acer Aspire 5920G with windows vista ultimate. Just recently i got some kind of a trojan virus from a flash disk. Right after my symantec detected it i told it to delete it then i did a system restore. Nothing happened after since and it's been 2 days. Did i do the right thing?
I just noticed that my laptop's overall CPU usage won't go down below 50%, am i really infected by a trojan? If yes then how do i remove it?

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  • Wiryan Tirtarahardja May 19, 2008

    Its iann
    Here's the funny thing, I've been doing a full scan with my Symantec and nothing showed up, and my laptop isn't lagging, in fact its like nothing happened... Do trojans avoid detections?

  • Wiryan Tirtarahardja May 19, 2008

    Its Iann
    the highest process there is only dmw.exe.

  • Wiryan Tirtarahardja May 19, 2008

    its Iann
    dmw.exe around 56,812K. There's like sidebar, firefox, msn with the same usage around 44-57. The rest (around 17-25) is like explorer, eNMTray and such like Acer Framework tray.

    I'm using an ACER aspire 5920G, i had it exactly for a year. Core 2 Duo 2.0GHz, 2GB DDR2 RAM, and an Nvidia GeForce 8600MGT. Its actually pretty standard, no mods.

    The thing is even if Core1 is like on 10% Core2 is gonna work up until like 90% just to maintain a 50% average. I don't know if its suppose to do that even with all the heavy graphics but i'd had a trojan before on my old desktop and i'm feeling suspicious...
    Any effective detection software?

  • Wiryan Tirtarahardja May 19, 2008

    Its iann.
    I scanned my computer earlier (didn't finished it...) using avast virus cleaner and i only found "cannot be scanned" files from Local~Temp files, InstallShield Information files, and system32 winevt logs... Trojan there?

  • Wiryan Tirtarahardja May 19, 2008

    Whew... thanks a lot, I nearly went panic mode...
    I'm gonna check regularly then.
    Thanks again

  • treescott Dec 04, 2008

    I got a pop up window on my laptop saying my laptop is infected w/2 different trojan viruses....Trojan.Mytob.Mailer which has infected 69 items and Trojan.Zlob.z which has infected 4 items

    my task manager fluctuates between 4 and 17 % I see the .exe programs using the most k's are Iexplore.exe using 64708 k...explorer.exe using 21532 k...dwm.exe using 11392 k and finally ieuser.exe using 4812 k

    can you help me? I don't know if I have Ultimate Edition Vista...might just be plain ole' Vista....


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If your CPU usages is high, check in your task manager which process is using that much CPU.
Please post the process name here.
I probably can tell you whether it is spyware or not...

Posted on May 19, 2008

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  • Thx_nb May 19, 2008

    How much CPU is used by dwm.exe?
    dwm.exe is known for using much CPU. It's the process that creates the live thumbnails, transparent windows and so on in Aero. If you have several applications active, it will use a lot of memory and CPU to keep track of actual window layout for each application.
    If you have an older computer, this can cause the computer to get slow. If there are other processes which are using much CPU, just post them. You also could post some specifications like processor memory and graphics card.
    Actually I don't think you still have spyware on your computer. To speed up a little you should turn of Aero, which will free up system resources, but you'll also loose some of the nice graphics.

  • Thx_nb May 19, 2008

    I've good experience with Ad-Aware from Lavasoft.
    The free version is a full spyware/malware scanner. Paid versions include other features, like live protection.
    You can download it here. Click Download.
    You could get Plus for free, but that's just for a short period. You just need the free version by now.
    You will be redirected to where you can download the file aaw2007.exe. Install it and update before you preform a full scan. It can cost some time, and use much CPU, but it scans very thoroughly.
    Just to free CPU time, you could kill the process dwm.exe...

  • Thx_nb May 19, 2008

    If this program doesn't detect anything, I don't think you still have malware, but I cannot guarantee, of course.

  • Thx_nb May 19, 2008

    No, i'm pretty sure those files don't contain a trojan.
    Just to free up disk space, you could empty your Temp folder.
    From your posts, i think your computer is clean.
    Regular scanning with a good virus scanner, and scanning downloaded files, or files on a cd or flash disk helps keeping your computer clean.
    Also i want to mention that: the fact that a file on a flash disk contains a virus or trojan, doesn't necessarily mean that your computer is infected.

    Good luck with your computer


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Try scanning with these programs:

Posted on May 19, 2008

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Okay. trojan's is hard to remove and in most cases restore don't help.

you have a acer so you can use the erecovery tool.
open the program and select set system to default. that will format your harddisk and install the system as then you bought the pc.

so if you have some important doc ex. you must make a copy of them somewhere. if you have a D: drive on your pc you can use that as backup disk.

Hope that helps. in case not ask me.

Posted on May 19, 2008

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