Author Topic: Why is Avast blocking an installer of czech localisation for videogames  (Read 6266 times)

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Offline Marek Tvrdý

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This behaviour was observed many times before by my users. I'n not using Avast so I do not have my own experinece. You can dowload installer packages on www.rpgcestiny.cz

Issue was observed today again on the latest installer I have sent to Xzone, biggest czech videogame store. See release notice with a download link here.

It's a .NET4 application in an InnoSetup install envelope with a detection of installed .NET libraries. Here's the source code.

What is the problem that Avast is blocking this installer and others antivirus solutions has no problem with that? I'm not a developer of the .NET4 application.

Best regards,
Marek Tvrdy
« Last Edit: January 26, 2016, 03:21:50 PM by Marek Tvrdý »

Offline Pondus

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #1 on: January 26, 2016, 04:43:52 PM »
upload and test file here  www.virustotal.com  /  www.metascan-online.com
if tested before, click rescan for a fresh result
Post link to scan result here



Offline malone.m

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #2 on: January 26, 2016, 06:28:18 PM »
It was already tested - by me :) Virustotal says 100% clean, strange..
Nothing is perfect...

Offline DavidR

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #3 on: January 26, 2016, 06:39:09 PM »
It was already tested - by me :) Virustotal says 100% clean, strange..

Not entirely strange as.

The VT scan is an on-demand scan not all of the functions in the on-demand real-time scan are available/replicable in the on-demand scan.

You don't say what the avast detection was (malware name, etc.) ?
Windows 10 Home 2004 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.1.2449 (build 21.1.5968.561) UI-1.0.597/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline Pondus

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #4 on: January 26, 2016, 06:52:40 PM »
and if you post the scan link as requested, then avast lab has the option to fetch the file from VT as they can see the MD5 here

however, best option is to send it
submit a ticket and attach file  >>   https://support.avast.com/support/home

« Last Edit: January 26, 2016, 06:55:31 PM by Pondus »

Offline malone.m

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #5 on: January 26, 2016, 06:55:08 PM »
It was already tested - by me :) Virustotal says 100% clean, strange..

Not entirely strange as.

The VT scan is an on-demand scan not all of the functions in the on-demand real-time scan are available/replicable in the on-demand scan.

You don't say what the avast detection was (malware name, etc.) ?
Sorry, but I haven't Avast installed atm..
Nothing is perfect...

Offline DavidR

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #6 on: January 26, 2016, 07:18:14 PM »
Sorry my bad, I didn't realise (or rather read) that you didn't have avast installed.
Windows 10 Home 2004 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.1.2449 (build 21.1.5968.561) UI-1.0.597/ WinPatrol+/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline Eddy

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #7 on: January 26, 2016, 07:37:58 PM »
Malone, you are wrong.

at VT Qihoo also shows a detection.


Offline Eddy

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #9 on: January 26, 2016, 08:51:40 PM »
Yes, I am sure.
I've downloaded 4 installers and submitted them and all 4 where flagged.

Offline Marek Tvrdý

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #10 on: January 26, 2016, 09:12:31 PM »
.NET4 application results: VirusTotal, Metascan

Compiled into InnoSetup envelope using .NET version detection: VirusTotal, Metascan

No threat found. Yet Avast is blocking our installer from proper work. One of users describes it as "I click on exe file a nothing will happen". I'm using competitors antivirus solution so I can't test it on my PC. But you can download it from Xzone here.

Customers of czech gameshop Xzone are very unhappy with this and I must warn them not to use Avast or give some exception to our installer before installation. We have no problems woth other common commercial antivirus solutions. Only Avast is problematic for more than a year. Similar behaviour was observed on previous projects from the same developer.

Out file is not a virus - .NET4 application search through registry to find location of Steam installation and then extract some files into game folders. We never had any issue with any other antivirus system except of Avast.

Offline Marek Tvrdý

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #11 on: January 26, 2016, 09:13:03 PM »
Yes, I am sure.
I've downloaded 4 installers and submitted them and all 4 where flagged.
What was flagged? Which installer?

Offline Pondus

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #12 on: January 26, 2016, 09:18:25 PM »
Quote
We never had any issue with any other antivirus system except of Avast.
Report it using the link in my post above


Offline Eddy

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #13 on: January 26, 2016, 09:22:16 PM »
Quote
What was flagged?
The installers.
Quote
Which installer?
All 4 that I've checked.

I see that the installers are not digitally signed.
That can be (not saying it is) the cause why avast isn't allowing them to run.

Offline Pondus

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Re: Why is Avast blocking an installer of czech localisation for videogames
« Reply #14 on: January 26, 2016, 09:24:35 PM »
Quote
All 4 that I've checked.
maybe some scan links ...