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davidh
February 10th, 2010, 07:25 PM
Leaky anti-virus defences letting malware through
Spanky new scanners no longer cutting it
By John Leyden
Posted in Malware, 8th February 2010 11:44 GMT
http://www.theregister.co.uk/2010/02/08/security_scanner_shortcomings/
Even users running up-to-date anti-virus software still get infected with malware, according to stats from an online malware scanning service.

Nearly a third (25,000 out of 78,800) of computers with up-to-date anti-virus software were discovered to be infected with malicious code when users scanned their PC using SurfRight's HitmanPro 3 behavioural scan.

SurfRight's analysis (pdf) is based on 107,435 users who put their PC through its scanner between 10 October and 4 December 2009. Around a quarter of these users (28,608) either had no scanner installed or were running security software that was out of date.

Surfers are much more likely to turn to SurfRight's software if they suspected their Windows PC was running slowly or might be infected with malware, so the figures from SurfRight's audit are bound to come out worse than those from the general web population.

Still, the exercise does illustrate the problem that running the latest version of antivirus software is no guarantee against malware infection, contrary to what the marketing department of many security software firms have historically said.

SurfRight's technology bundles seven different antivirus programmes and offers them through its HitmanPro 3 scanning service. Other vendors, such as Panda, have previously acknowledged up-to-date anti-virus software alone is only a partial defense against malware, but have taken a different approach to tackling the problem. Panda has adopted a cloud-based architecture for security software as a technique for becoming more nimble in responding to the growing volume of malware threats.
I am now evaluating Surfright's Hitman Pro 3.5
It already found 3 files in my XP system32 folder that look a little bit to me like they might belong to the infection that PCTOOLS Threatfire already "cleaned" for me to "save my bacon".

The behavioral scanning of Hitman Pro is apparently DIFFERENT than Threatfire. i.e. it scans the files off of the disk, apparently without actually executing them, unlike Threatfire.

I used to be a little bit embarrassed by appearing to be paranoid. But I think the bad guys have advanced far enough now that there is good reason to be "paranoid".

If this evaluation is good, I may actually spring $20 for 1 year for this.

On demand signature and whitelist based scans by:
Ad Aware
MalwareBytes
Norton free (Insight)
Spybot S&D
Threatfire (on demand, not realtime)
TrendMicro Housecall (ActiveX web based)
Microsoft One Care free (scanned over 500,000 files)

DID NOT find anything :(

sidney
February 11th, 2010, 02:40 AM
At what point is it worth migrating your Windows machine to a virtual one that you run under VirtualBox on Linux and see what of what you do on your PC you can comfortably run native in Linux, perhaps gradually weaning off Windows?

Certainly the tasks that make you most vulnerable, which are probably mostly done through a web browser, would be pretty much the same in Firefox under Linux than they are in Firefox under Windows.

You can as much as possible put Windows and program installations on one virtual disk, and data files on another virtual disk and/or in a folder that is shared by Windows and Linux. That way you could treat the system virtual disk as pretty much read-only and any time you want restore it from your archived copy. Kind of like an instant system restore.

davidh
February 11th, 2010, 07:15 PM
At what point is it worth migrating your Windows machine to a virtual one that you run under VirtualBox on Linux and see what of what you do on your PC you can comfortably run native in Linux, perhaps gradually weaning off Windows?

Certainly the tasks that make you most vulnerable, which are probably mostly done through a web browser, would be pretty much the same in Firefox under Linux than they are in Firefox under Windows.

You can as much as possible put Windows and program installations on one virtual disk, and data files on another virtual disk and/or in a folder that is shared by Windows and Linux. That way you could treat the system virtual disk as pretty much read-only and any time you want restore it from your archived copy. Kind of like an instant system restore.

I would probably put my toe in the water by starting out with a dual boot type of system. That way, I would not have to move an image of my current Windows onto a virtual disk.

I used to run OS/2 Warp 3, Windows 3.1, Windows 95, and Windows NT 4 server on a 16 MB RAM 420MB HD "dual boot" system long time ago. CPU was ancient 66 Mhz Intel I but performance was hardly worse than my current Core 2 Duo Intel 2+ Ghz 3GB RAM CPU :(

I suppose that one of the main obstacles would be getting drivers for cheap crapo hardware such as web cams, etc.

I'm perhaps leaning towards possibly getting a 1 terabyte drive station with software to perform full backups of my Win XP system.

However, for the time being, behavioral based and cloud based anti-malware software seems to be a worthwhile stop gap measure for Windows systems.
For example, Surfright Hitman Pro for on-demand scans and PCTOOLS Threatfire for behavioral real time resident scanning (in addition to other resident real time scanners, e.g. AVG, Panda Cloud Based).