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Avast! blocking FRST download from this website - false positive?


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6 replies to this topic

#1 gdnr

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Posted 20 July 2015 - 06:22 AM

Hello

 

I am trying to download Farbar Recovery Scan Tool from Bleepingcomputer. Avast! Antivirus blocks it, as 'suspicious', and says 'Infection' :  Win:64evo-gen

 

A separate pop-up box says C:Users[file path].exe 'part could not be saved, because the source file coule not be read'.

 

Is this a false positive on Avast! ? and if so how do I work around it?

 

Thank you.



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#2 Aura

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Posted 20 July 2015 - 06:48 AM

Hi gdnr :)

This is indeed a false positive from avast!. This vendor has been known to targets many downloads hosted on BleepingComputer as false positives. Every single tools and programs hosted in the Downloads section of BleepingComputer are completely safe to use. The fault here is on the vendor's side, not BleepingComputer. What you can do is temporarily disable avast! to download and execute FRST, then re-enable it once it's done. Or you can disable avast!, download FRST, add it avast! exclusion list and then re-enable it. This should allow you to use it without avast! interfering.

http://www.getavast.net/support/managing-exceptions

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#3 quietman7

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Posted 20 July 2015 - 07:40 AM


False detections by anti-virus programs for specialized fix tools are not uncommon.

Certain embedded files that are part of legitimate programs and specialized fix tools (like FRST), may at times be detected by some anti-virus and anti-malware scanners as suspicious, a Risk Tool, Hacking Tool, Potentially Unwanted Program, a possible threat or even Malware (virus/trojan) when that is not the case. This occurs for a variety of reasons to include the tool's compiler, the files it uses, whether files are compressed or packed, what behavior (routines, scripts, etc) it performs, any registry strings it may contain and the type of security engine that was used during the scan. Other legitimate files which may be obfuscated, encrypted or password protected in order to conceal itself so they do not allow access for scanning but often trigger alerts by anti-virus software.

When flagged by an anti-virus or security scanner, it's because the program includes features, behavior or files that appear suspicious or which can potentially be used for malicious purposes. Compressed and packed files in particular are often flagged as suspicious by security software because they have difficulty reading what is inside them. These detections do not necessarily mean the file is malicious or a bad program. It means it has the potential for being misused by others or that it was simply detected as suspicious or a threat due to the security program's heuristic analysis engine which provides the ability to detect possible new variants of malware. Anti-virus scanners cannot distinguish between "good" and "malicious" use of such programs, therefore they may alert you or even automatically remove them. In these cases the detection is a "false positive" and can be ignored.

Most of the well known specialized tools we use as malware fighters are written by known experts at various security forums like Bleeping Computer, TechSupport, GeeksToGo, SypwareInfo and other similar sites so they can be trusted...this includes any program hosted by BC for download. Unfortunately, many of these tools are repeatedly falsely detected by various anti-virus programs from time to time.

The problem is really with the anti-virus vendors who keep targeting these embedded files and NOT with the tools themselves. We can inform the developers but they have encountered this issue many times before and in most cases there isn't much they can do about it. Once the detection is reported to the anti-virus vendor, they are usually quick to fix it by releasing an updated definition database.

Either have your anti-virus ignore the detection or temporarily disable it until you download and run the tool.
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#4 juan gce

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Posted 20 July 2015 - 10:19 AM

It also happened to me .. I do not understand how is it possible that a company list some place tha recomends as a threat .. it gives a lot of incertitude to the users.



#5 gdnr

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Posted 20 July 2015 - 11:20 AM

Thank you Aura and quietman7, and also juan gce.  I will follow your advice in order to download FRST. Thanks also Aura for the link to managing exceptions in Avast!  which will be helpful.



#6 Aura

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Posted 20 July 2015 - 11:48 AM

No problem gdnr, you're welcome :)

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#7 quietman7

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Posted 20 July 2015 - 12:07 PM

You're welcome on behalf of the Bleeping Computer community.
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