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Avast Warning on Bleeping Computer download a False Positve?


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9 replies to this topic

#1 bahjan17

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Posted 01 June 2015 - 10:38 AM

Hi

 

Whlie waiting for analysis of a logfile, I thought I would download some programmes for possible use later. While on this page http://www.bleepingcomputer.com/forums/t/554433/trojanwin32genericpakcobra/ 

I tried downloading 'MiniToolBox' and was surprised to find that my Avast Free v 5.0 blocked the download as potentially malicious.  Is this a false positive (as I suspect), or has the link been hacked?  In which case, I thought someone should know.


Edited by bahjan17, 01 June 2015 - 10:40 AM.


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#2 Broni

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Posted 01 June 2015 - 10:41 AM

It surely is false positive.


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#3 Aura

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Posted 01 June 2015 - 10:42 AM

Hi bahjan17 :)

This is what we call a "false positive". Which means that a security software detects a file as malicious when it's not. avast! has been known to detects legitimate tools and programs hosted on BleepingComputer as malicious (FP) for a very long time now, MiniToolBox being one of the most frequent. I suggest you to disable avast! for the time of the download and execution of MiniToolBox and to re-enable it once you're done with it. You can also whitelist the file in avast! while it's disabled, so it won't be detected/deleted when you re-enable it. MiniToolBox is completely safe to download and use, and so are every other tools and programs hosted in the "Downloads" section of BleepingComputer.

False positives are often triggered on legitimate files that have malware-like components and/or behavior, despite the fact that they are completely safe to use. It's just that they way they work can be associated to a malware activity and they end up being targeted by security software.

Edited by Aura., 01 June 2015 - 10:43 AM.

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#4 bahjan17

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Posted 01 June 2015 - 10:43 AM

Wow, that was lighting fast. Thought so, but good to have it confirmed - cheers.....



#5 Aura

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Posted 01 June 2015 - 11:02 AM

No problem bahjan :)

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#6 quietman7

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Posted 01 June 2015 - 05:00 PM


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 MiniToolBox), 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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#7 bahjan17

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Posted 02 June 2015 - 05:45 AM

Thanks for the replies.  Temp disabled - download worked fine :thumbup2:



#8 quietman7

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Posted 02 June 2015 - 07:32 AM

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

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Posted 03 June 2015 - 06:34 AM

Hello -

I have been advised that you should first follow The Methods HERE and uninstall / reinstall your version of Malwarebytes Anti-Malware (clean reinstall/upgrade).

If this is the Paid PRO version, always be sure to write down your ID and Key codes for the reinstall.

If the problem continues, please visit Malwarebytes Forum and post to Malwarebytes Anti-Malware Help and request help from AdvancedSetup as he is the main online Site Root Admin.
You will need to create an account like you have done here .

 

Also with a download of MiniToolBox it needs to be downloaded to desktop to run it.

Thank You -



#10 Aura

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Posted 03 June 2015 - 06:48 AM

noknojon, I think you replied to the wrong thread?

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