Spyware download fail

Run OTL

• Under the Custom Scans/Fixes box at the bottom, paste in the following
  
  
  Code:

  :OTL
  
  :Services
  
  :Reg
  
  :Files
  C:\Nexon\MapleStory\JackMs.exe
  
  :Commands
  [purity]
  [emptytemp]
  [emptyflash]
  [Reboot]
  

• Then click the Run Fix button at the top
• Let the program run unhindered, reboot the PC when it is done
• You will get a log that shows the results of the fix. Please post it.

=====================================================================

Your computer is clean

1. We need to reset system restore to prevent your computer from being accidentally reinfected by using some old restore point(s). We'll create fresh, clean restore point, using following OTL script:

Run OTL

• Under the Custom Scans/Fixes box at the bottom, paste in the following:

Code:

:OTL
:Commands
[purity]
[emptytemp]
[EMPTYFLASH]
[CLEARALLRESTOREPOINTS]
[Reboot]

• Then click the Run Fix button at the top
• Let the program run unhindered, reboot the PC when it is done
• Post resulting log.

2. Now, we'll remove all tools, we used during our cleaning process

Clean up with OTL:

• Double-click OTL.exe to start the program.
• Close all other programs apart from OTL as this step will require a reboot
• On the OTL main screen, press the CLEANUP button
• Say Yes to the prompt and then allow the program to reboot your computer.

If you still have any tools or logs leftover on your computer you can go ahead and delete those off of your computer now.

3. Make sure, Windows Updates are current.

4. If any Trojan was listed among your infection(s), make sure, you change all of your on-line important passwords (bank account(s), secured web sites, etc.) immediately!

5. Download, and install WOT (Web OF Trust): http://www.mywot.com/. It'll warn you (in most cases) about dangerous web sites.

6. Run Malwarebytes "Quick scan" once in a while to assure safety of your computer.

7. Run Temporary File Cleaner (TFC) weekly.

8. Download and install Secunia Personal Software Inspector (PSI): http://secunia.com/vulnerability_scanning/personal/. The Secunia PSI is a FREE security tool designed to detect vulnerable and out-dated programs and plug-ins which expose your PC to attacks. Run it weekly.

9. (optional) If you want to keep all your programs up to date, download and install FileHippo Update Checker.
The Update Checker will scan your computer for installed software, check the versions and then send this information to FileHippo.com to see if there are any newer releases.

10. Run defrag at your convenience.

11. Read How did I get infected?, With steps so it does not happen again!: http://www.bleepingcomputer.com/forums/topic2520.html

12. Please, let me know, how is your computer doing.

There isn't any.

Which trojan file?

As for removing stuff, run all of my steps first.
OTL Cleanup will remove most of tools, we used.
Whatever is left, you can delete manually.

We just removed it by running OTL script.

Yes, definitely.
Give me a final word, when you're done with all steps.

There were no trojans present, so your passwords should be safe.

As for the computer running slow, I'm not sure, what to tell you.
My duty is to make sure, your computer is clean and it is.
You may have some other issues (hardware? Windows files?)).

I can see, you had MyCleanPC Registry Cleaner installed in the past.
Assuming, you used it, it may be a part of your problem.
Registry tools are not recommended and here is why: http://miekiemoes.blogspot.com/2008/02/registry-cleaners-and-system-tweaking_13.html

I also, somehow, missed the fact, that you appear to be running two AV programs, McAfee and Microsoft Security Essentials.
Is that true?
It's little bit confusing, because OTL shows MSE, but SecurityCheck doesn't.
Let me know.

No, you can't run two AV programs.
You have to uninstall one of them.
Running two AV programs may cause all kind of problems.
Let me know, which one you want to keep.

As for MyCleanPC Registry Cleaner, I don't see it in Add\Remove list, so it's probably uninstalled, but its entry is still present as a startup.

Download, and install Quick Startup: http://www.glarysoft.com/qs.html
Go File>Export, save report, and paste it into your next post.

MSE will always be free.
I'm not a big fan of McAfee, but since you paid for it, uninstall MSE.

Don't forget to post QuickStartup log.