Backdoor Trojan found on computer. Is it dangerous?

I am running Exterminate It! on my Vista laptop and it keeps reporting a Malware Agent in the Backdoor Trojan category with a location name C:\Windows\TEMP\symlcsv1.exe. I run Exterminate It! and wipe out this file, then run Exterminate It! again and it shows clear but the file comes back at some point because now, every time I run Exterminate It!, the symlcsv1.exe file shows up. Is this a dangerous file? If so, how do I get rid of it permanently? If not, how do I differentiate between a dangerous file and a harmless file?
sirenudetteAsked:
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JuanCarnigliaCommented:
The file symlcsv1.exe is a part of Symantec Product. (see here: http://www.fbmsoftware.com/spyware-net/process/symlcsv1_exe/1156/).

But the file you are reporting could be an infected copy of the original file.

Check this link also, http://forum.avast.com/index.php?topic=36799.0

It seems to be a False positive related to the Ghost product.

Greetings
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JuanCarnigliaCommented:
The file symlcsv1.exe is a part of Symantec Product. (see here: http://www.fbmsoftware.com/spyware-net/process/symlcsv1_exe/1156/).

But the file you are reporting could be an infected copy of the original file.

Check this link also, http://forum.avast.com/index.php?topic=36799.0

It seems to be a False positive related to the Ghost product.

Greetings
0
 
David-HowardCommented:
Run malwarebytes as a test and see if it detects it. It's definition files are very large and if you are indeed infected it along with your current suite should report the same.
www.malwarebytes.org
You might also test out superantispyware. It's free as well.
http://www.superantispyware.com/
You can also upload any suspicious file here for analysis. This site uses over 32 different engines for testing.
http://www.virustotal.com/
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David-HowardCommented:
I mean to add to run your scans in Safe Mode and to disable System Restore.
To disable System Restore:
Click Start, right-click My Computer, and then click Properties.
In the System Properties dialog box, click the System Restore tab.
Click to select the Turn off System Restore check box. Or, click to select the Turn off System Restore on all drives check box.
Click OK.
When you receive the following message, click Yes to confirm that you want to turn off System Restore:
You have chosen to turn off System Restore. If you continue, all existing restore points will be deleted, and you will not be able to track or undo changes to your computer.
Do you want to turn off System Restore?
After a few moments, the System Properties dialog box closes.
Once updated, reboot into Safe Mode (F8 at startup) and run a scan.
After your scans remember to enable System Restore. (If you care to)
Steps to turn on System Restore:
Click Start, right-click My Computer, and then click Properties.
In the System Properties dialog box, click the System Restore tab.
Click to clear the Turn off System Restore check box. Or, click the Turn off System Restore on all drives check box.
Click OK.
After a few moments, the System Properties dialog box closes.
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