Author Topic: Avast detecting virus in my USB  (Read 2380 times)

Offline onakiri

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Avast detecting virus in my USB
« on: October 24, 2011, 02:36:10 PM »
Hello, my english is poore and I use google translator.

My USB has a CDFS partition, inside has a .Exe file that Avast detects it as Trojan, but will not let me remove the trojan
I send a .Exe file to virus@avast.com
Name of .Exe file: Autorun.exe

Edit: I tried to send the .exe file from Gmail to virus@avast.com, but does not let me send files. exe, as I can send the file with virus?
Thanks
« Last Edit: October 24, 2011, 02:43:35 PM by onakiri »

Offline Pondus

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Re: Avast detecting virus in my USB
« Reply #1 on: October 24, 2011, 02:49:08 PM »
and why do you want to send it to avast when avast already detect it ?
do you think it is a false positive ?





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when you have the result, copy the url in the address bar and post it here for us to see


alternative
Jotti     http://virusscan.jotti.org/en
VirSCAN   http://virscan.org/
Metascan   http://www.metascan-online.com/

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Offline Pondus

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Re: Avast detecting virus in my USB
« Reply #2 on: October 24, 2011, 02:50:52 PM »
Quote
Edit: I tried to send the .exe file from Gmail to virus@avast.com, but does not let me send files. exe, as I can send the file with virus?
Thanks

you can send from avast chest

Moving files to the Virus Chest
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=501#idt_03

Submitting files from the Virus Chest to avast! Virus Lab
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=501#idt_07


Or do it online
http://www.avast.com/en-no/contact-form.php?loadStyles


or send in a password protetced zip.file to virus @ avast.com
it is recomended to use a zip program that also encrypt the content (like 7zip)
as some mail scanners (like Gmail) will block sending if it can see that it contain an .exe file



Chief Wiggum: Uh, no, you got the wrong number. This is 9-1…2.


Offline onakiri

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Re: Avast detecting virus in my USB
« Reply #3 on: October 24, 2011, 03:27:22 PM »
Virustotal

Metascan

Jotti

I have send the .Exe file from the Virus Chest

Thanks
« Last Edit: October 24, 2011, 07:55:31 PM by onakiri »

Offline iroc9555

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Re: Avast detecting virus in my USB
« Reply #4 on: October 24, 2011, 07:59:45 PM »
Pondus.

This is a thread going on in the Spanish Forum where the OP said that Avast was detecting a trojan when he used the Teclas pen drive. He also said that Avast could not remove it because he got an  " Access denied (5) " pop up.

http://forum.avast.com/index.php?topic=86679.0

The Teclas pen drive has a partition " Read-Only " where it has an antivirus-encripted program:

http://translate.google.com/translate?hl=en&sl=zh-CN&u=http://www.teclast.com/topic.php%3Faction%3Dproduct%26channelID%3D70%26topicID%3D140%26productID%3D692%26keyword%3D&ei=GrylTvf9DKL20gHWs_jeBA&sa=X&oi=translate&ct=result&resnum=3&sqi=2&ved=0CCwQ7gEwAg&prev=/search%3Fq%3DCF2/4/8/16/32GBNCU-B2%26hl%3Den%26biw%3D1016%26bih%3D587%26prmd%3Dimvns

Avast detects an autorun.inf as a trojan; However, Populous and Ady4um told him that the autorun.inf opens a autorun.exe files that is most likely the cause of the alert. The weird thing is that the PC itself is not infected, or at least Avast and MBAM does not find anything.

Now the question is if this is a F/P caused by the increpted program or if it realy is infected.
These pen drives are not very well known and all thier literature is in Chinese.

The OP said he sent the file through the Virus Chest, but if he got access denied trying to remove it the file might be incomplete, unless he was able to send the file to Avast Virus Chest manually. I already posted in the other thread how to send use RAR and send the file.

I suppose this is a matter for the Avast team to see if there is some kind of conflict beteewn the Teclas program in the pen drive and Avast.

Regards
« Last Edit: November 13, 2011, 11:52:24 PM by iroc9555 »
Hernan.
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“We are all ignorant, but we don't all ignore the same things..” Albert Einstein.

Offline iroc9555

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Re: Avast detecting virus in my USB
« Reply #5 on: October 26, 2011, 07:52:38 PM »
Follow up.

The OP got an answer from Avast. The Teclast pen drive has some kind of " Teclast Password Master " program. Avast will change the alert to PUP.

Regards.
Hernan.
Dim 9200/XPS 410. C2D E6600; 2.40 GHz; 2 GB SDRAM. XP Pro_86. Spk3. IE 8 & FF 27 Avast! FREE 9.0.2016. CIS 5.12(Fw/D+). MBAM Premium. MCShield. SpywareBlaster. WinPatrol +. OpenDNS. WOT. SAS Pro (O/D).
“We are all ignorant, but we don't all ignore the same things..” Albert Einstein.

Offline nandla

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Re: Avast detecting virus in my USB
« Reply #6 on: October 31, 2011, 06:26:28 AM »
There is virus in my usb but avast did not detected it. what cud be da reason???
My avast is up to date and it set to auto update.


I'm facing a malware problem in the site http://dcric.com/ . Google says there is trojan but avast says it is clean.

Offline DavidR

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Re: Avast detecting virus in my USB
« Reply #7 on: October 31, 2011, 10:42:33 AM »
1. Without information no one can say ?
How do you know there is a virus in your USB, is it dormant (not active or attempting to run when the USB is connected, have you scanned the USB drive, etc. etc.

2. Google has a historic database and avast's scans are real time. Avast isn't actually saying it is clean, just that it hasn't found anything on the pages you have visited. You also don't give any information on what google finds, etc. So the google issue is something you have to take up with the site owner and google.

This site also finds nothing and it is real time checking, http://sitecheck.sucuri.net/scanner/.

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