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trojan.alemond on external drive...please help!


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#1 rainingmisery

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Posted 09 June 2010 - 01:59 PM

My Symantec found a trojan.alemond on my external drive in the system volume information restore folder. When I tried to clean/quarantine, symantec could not do it. I've tried turning restore off and cleaning it but it would not let me access it. Please help me remove this virus from my computer! Thanks in advance! Also, I'm using Windows XP Professional

EDIT: Moved from XP to Am I Infected ~ Hamluis.

Edited by hamluis, 09 June 2010 - 02:13 PM.


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#2 boopme

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Posted 09 June 2010 - 04:08 PM

Try this...
Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been backed up, renamed and saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista and Windows 7 users can refer to these links: Create a New Restore Point in Vista or Windows 7 and Disk Cleanup in Vista.
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#3 rainingmisery

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Posted 10 June 2010 - 07:41 AM

Hi! Thanks for replying!

How do I specify to create the restore point for my external drive?

#4 boopme

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Posted 10 June 2010 - 11:09 AM

It is a bad practice to let System Restore monitor an external drive. By design most external drives are monitored by System Restore. If any changes are made to the external drives files while it is not connected to the system, the next time it’s connected System Restore will find an inconsistency in the SR log and cause all existing restore points to become corrupt and require there deletion. The same can be true if the external drive is powered off while the system is running.

A possible work around is to assign a permanent drive letter (the higher in the alphabet the better) to the external drive via Disk Management. To access Disk Management, go to Start - Run and type diskmgmt.msc then press enter.


Right-click a partition, logical drive, or volume, and then click Change Drive Letter and Paths.

Do one of the following:

1. To assign a drive letter, click Add, click the drive letter you want to use, and then click OK.

2. To modify a drive letter, click it, click Change, click the drive letter you want to use, and then click OK.

Reboot the system. Open System Restore and stop monitoring that drive. This should keep System Restore from monitoring that drive, but not always.


Related article: USB drive letter manager - USBDLM
from:http://bertk.mvps.org/html/tips.html

Edited by boopme, 10 June 2010 - 11:10 AM.

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#5 rainingmisery

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Posted 10 June 2010 - 09:57 PM

even if I stop monitoring the external drive, the virus is still found when I run the scan. after I stop monitoring with system restore, how can I delete the trojan from system volume information?

Thanks for your help!

#6 boopme

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Posted 10 June 2010 - 10:15 PM

This is a good question. I'll post a proper answer for this after I research it,most likely tomorrow.

System Restore holds it’s restore points in ... “System Volume Information” on root of every drive, partition or volume, including most external drives, and some USB flash drives. On drives or partitions that are not monitored by System Restore this folder will be very small in size or completely empty, unless Encrypting File System is in use or the Indexing Service is turned on. Note: If the System Volume Information folder is deleted, it will be recreated automatically

.http://bertk.mvps.org/html/tips.html#14

If System Restore is monitoring an external drive, when running Disk Cleanup you should be given the option to select the drive to clean up and be able to remove the RPs in the external drives SVI folder, then stop monitoring it afterwards.
http://bertk.mvps.org/html/diskclean.html

However, if you just disable System Restore, all restore points will be deleted and a new one created when turned back on.

•Right click on the My Computer icon on your desktop and select Properties.
•Click on the System Restore tab.
•Click on the drive you want to disable to highlight it and choose Settings.
•Check the box that says "Turn off System Restore on this drive" and click OK.
•Click Yes when prompted with "Do you want to turn off System Restore on this drive?.
•Click Ok twice and Reboot.
•To re-enable System Restore on that drive, follow steps 1-4, but in step 4, uncheck the "Turn off System Restore" check box and click Ok twice.
•If this is an external drive you no longer want to save restore points to, then skip the part to re-enable (turn on) System Restore after reboot and that drive will no longer be monitored.

Instructions with screenshots

Edited by quietman7, 11 June 2010 - 06:16 PM.

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#7 rainingmisery

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Posted 13 June 2010 - 12:57 PM

ok thanks! I will try that and let you know if my virus scan still finds it




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