The System Volume Information Folder
(SVI) is a part of System Restore
- the feature that allows you to set points in time to roll back your computer to a clean working state.
Keep in mind that System Restore will back up the good as well as the bad files
so when malware is present on the system it gets included in any restore points. When you scan your system with anti-virus or anti-malware tools, you may receive a message that a virus was found in the System Volume Information folder (System Restore points) but the anti-virus software was unable to remove it.
There are some folks who advocate turning off System Restore when scanning their systems for malware. This is not advisable because there is always a possibility of something going wrong during the malware removal process and you end up with system problems. Without a restore point to fall back on, your then stuck with a limited means of restoring your system such as a Repair Install or Reformat. Although System Restore is not 100% guaranteed to work all the time, at least it gives you another option. When the system is clean, then you can create a new Restore Point and purge the old ones to prevent accidental re-infection.
Since there was evidence of the Trojan Zlob on your system, there may be more related malware files that your scans have not found. I suggest you print out and follow the generic instructions for using SmitfraudFix
in BC's self-help tutorial
"How to remove the Smitfraud/Generic Zlob
(scroll down to where it says Removal Instructions
)If you have downloaded SmitfraudFix previously please delete that version and download it again as the tool is frequently updated!