How Do You Know If Your Download Really Has a Virus?

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It would be easier to download to desktop and right click and have your own virus, malware program check file.
I have Malwarebytes or Kaspersky or both checking downloaded files first, before installing anything from anywhere.
I am not sure if I like the reference, it sure shows a lot of languages on top. How trustworthy is that link? Have you tried them Tom? Who is behind it? (yes, I am paranoid about unknown places)
Also if one is on dialup, that would take forever to check files downloaded, resent, check what they say, etc.
 

perfume

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Thanx! Have downloaded VTD from PC magazine website, because this worried me!Kindly see the snap below!:confused::rolleyes:
 

Attachments

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The Virus Total Uploader sure makes it is

Mutli-Engine Virus Scanners
http://virusscan.jotti.org/en
http://www.virustotal.com/
http://virscan.org/
http://www.viruschief.com
http://scanner.virus.org/

Single-English Virus Scanners
http://www.kaspersky.com/scanforvirus
http://onlinescan.avast.com/
http://www.gietl.com/test-clamav/
http://www.fortiguard.com/antivirus/virus_scanner.html
http://www.eset.com/online-scanner

And I bet there are others.

Note that on the Mutli-Engine Virus Scanners you should look at the date on the defs because the sites are great but one site may be update faster then another.
 
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If you have a good AV program download the application to your desktop, scan with your AV program, Malwarebytes and SAS. If infection is found, delete the download.
 

antech

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Norton and Kaspersky offer some excellent virus download protections
 

perfume

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Norton and Kaspersky offer some excellent virus download protections
What antech said is spot-on and is what very good AVs do! They are "stop at the gate" protective! Since i first ran a WOT test on the site initially provided in this thread, there was no need for the KAS. to intervene! Right-clicking on a file,folder or site seems to become as regular as the left clicks! Ahem, i don't about Norton!:rolleyes:
 

antech

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Norton's Protection has significantly improved over the last year's edition.
Almost from 60%-80 & 85 %
 

Snagglegaster

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In fact, if I were writing malware, all of these sites would be great places to test my code. Since the idea is obvious, I can't see how anyone could doubt that this is probably S.O.P. for many crooks. Here's a blog about Google's research on the subject.

A couple of notable findings from the Google report:

"Google’s automated system scanned each potentially malicious page in real time using a number of licensed anti-virus engines, and all of the files were rescanned again at the end of the study. Beginning in June 2009, Google charted a massive increase in the number of unique fake anti-virus installer programs, a spike that Google security experts posit was a bid to overwhelm the ability of legitimate anti-virus programs to detect the programs. Indeed, the company discovered that during that time frame, the number of unique installer programs increased from an average of 300 to 1,462 per day, causing the detection rate to plummet to below 20 percent." and

"In addition, Google determined that the average lifetime of sites that redirect users to Web pages that try to install scareware decreased over time, with the median lifetime dropping below 100 hours around April 2009, below 10 hours around September 2009, and below one hour since January 2010."

And this quote from Niels Provos, principal software engineer for Google’s infrastructure group: “It turns out that the closer you get to now, the commercial anti-virus programs were doing a much worse job at detecting pages that were hosting fake anti-virus payloads.”
 

antech

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In fact, if I were writing malware, all of these sites would be great places to test my code. Since the idea is obvious, I can't see how anyone could doubt that this is probably S.O.P. for many crooks. Here's a blog about Google's research on the subject.

A couple of notable findings from the Google report:

"Google’s automated system scanned each potentially malicious page in real time using a number of licensed anti-virus engines, and all of the files were rescanned again at the end of the study. Beginning in June 2009, Google charted a massive increase in the number of unique fake anti-virus installer programs, a spike that Google security experts posit was a bid to overwhelm the ability of legitimate anti-virus programs to detect the programs. Indeed, the company discovered that during that time frame, the number of unique installer programs increased from an average of 300 to 1,462 per day, causing the detection rate to plummet to below 20 percent." and

"In addition, Google determined that the average lifetime of sites that redirect users to Web pages that try to install scareware decreased over time, with the median lifetime dropping below 100 hours around April 2009, below 10 hours around September 2009, and below one hour since January 2010."

And this quote from Niels Provos, principal software engineer for Google’s infrastructure group: “It turns out that the closer you get to now, the commercial anti-virus programs were doing a much worse job at detecting pages that were hosting fake anti-virus payloads.”
An intresting story!
Thanks for sharing the info
 

perfume

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Dear Snagglegaster,
It is an uphill task to prevent and prove that one's PC is virus-free indeed!

10 virus symptoms

  1. Programs take longer to load. Memory-intensive operations take a lot of time to start.
  2. A change in dates against the filenames in the directory. When the virus modifies a file the operating system changes the date stamp.
  3. The floppy disk or hard disk is suddenly accessed without logical reason.
  4. Increased use of disk space and growth in file size-the virus attaches itself to many files.
  5. Abnormal write-protect errors. The virus trying to write to a protected disk.
  6. Strange characters appear in the directory listing of filenames.
  7. Strange messages like "Type Happy Birthday Joshi" (Joshi Virus) or "Driver Memory Error" (kak.worm) appear on the screen and in documents.
  8. Strange graphic displays such as falling letters or a bouncing ball appear on screen.
  9. Programs may hang the computer or not work at all.
  10. Junk characters overwrite text in document or data fileshttp://www.boloji.com/computing/security/016.htm
 
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