Unzip - Viruses?
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From: Fruit2O on 2 Nov 2009 21:05 I have a file given to me by a friend - but I am leary of opening it for fear of getting a virus. Am I justified? What if I open it and run it through my anti-virus program? If it passes, would that assure safety? If not, is there another way to check the contents of the zip file for possible malware?
From: David H. Lipman on 2 Nov 2009 21:09 From: "Fruit2O" <jz137xww(a)cox.net> | I have a file given to me by a friend - but I am leary of opening it | for fear of getting a virus. Am I justified? What if I open it and | run it through my anti-virus program? If it passes, would that assure | safety? If not, is there another way to check the contents of the zip | file for possible malware? Submit a sample to Virus Total -- http://www.virustotal.com/flash/index_en.html The submission will then be tested against many different AV vendor's scanners. That will give you an idea what it is and who recognizes it if it is malicious. -- Dave http://www.claymania.com/removal-trojan-adware.html Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp
From: Rube Bumpkin on 2 Nov 2009 21:11 Fruit2O wrote: > I have a file given to me by a friend - but I am leary of opening it > for fear of getting a virus. Am I justified? What if I open it and > run it through my anti-virus program? If it passes, would that assure > safety? If not, is there another way to check the contents of the zip > file for possible malware? Let's see... - You could scan it with your Antivirus software. Most have a right-click option of 'Scan this file...' or something similar. When I right-click, I can scan with Antivir. - You could scan it with your anti-malware software. Most have the same sort of option. When I right-click, I can scan with SuperAntiSpyware or Malwarebytes - You could submit it to VirusTotal (www.virustotal.com) and test it against multiple scanners at once. RB
From: FromTheRafters on 2 Nov 2009 22:24 "Fruit2O" <jz137xww(a)cox.net> wrote in message news:ao3ve5lccovglfa29e4bgdm5muvklq7qb4(a)4ax.com... >I have a file given to me by a friend - but I am leary of opening it > for fear of getting a virus. Am I justified? Yes, very much so. Contrary to the popular refrain "...and I don't open files from strangers" - much malware comes (or appears to come) from those you *do* know and trust. > What if I open it and run it through my anti-virus program? From a general security standpoint, if you didn't request it - delete it. If you really *do* want it, then you should have it scanned for malware some days after you receive it (cooling off - trying to avoid day zero malware) by several scanners. > If it passes, would that assure safety? No, only the first option assures safety. > If not, is there another way to check the contents of the zip > file for possible malware? Old school - unzip and scan the resulting files. Now, most scanners are capable of extracting the files for you when you scan the archive itself. ....and as an aside, some malware has attacked vulnerabilities in the implementation of that very feature.
From: Bob L on 3 Nov 2009 02:35 On Mon, 2 Nov 2009 22:24:26 -0500, "FromTheRafters" <erratic(a)nomail.afraid.org> wrote: >"Fruit2O" <jz137xww(a)cox.net> wrote in message >news:ao3ve5lccovglfa29e4bgdm5muvklq7qb4(a)4ax.com... >>I have a file given to me by a friend - but I am leary of opening it >> for fear of getting a virus. Am I justified? > >Yes, very much so. Contrary to the popular refrain "...and I don't open >files from strangers" - much malware comes (or appears to come) from >those you *do* know and trust. > >> What if I open it and run it through my anti-virus program? > >From a general security standpoint, if you didn't request it - delete >it. If you really *do* want it, then you should have it scanned for >malware some days after you receive it (cooling off - trying to avoid >day zero malware) by several scanners. > >> If it passes, would that assure safety? > >No, only the first option assures safety. > >> If not, is there another way to check the contents of the zip >> file for possible malware? > >Old school - unzip and scan the resulting files. Now, most scanners are >capable of extracting the files for you when you scan the archive >itself. > >...and as an aside, some malware has attacked vulnerabilities in the >implementation of that very feature. > Get yourself Sandboxie and run all your operations there to start with.
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