Avast corrupts my downloads

Avast Free Antivirus / Premium Security
1

Hello

I have recently installed Avast free on a Windows 7 PC and I keep getting corrupted downloads from internet regardless of the browser I use (firefox/chrome/opera), the only way to download .exe or .zip or similar executable files is to disable avast during the downloading process.

I have no firewall active on my router, only Windows firewall.

2
I have recently installed Avast free on a Windows 7 PC
Did you remove your previous used AV before installing avast?

Did you remove it according to vendors instructions / removal tools.

General: Uninstalling a third-party antivirus software. http://www.avast.com/en-eu/faq.php?article=AVKB11

Generale: Disinstallare un terzo antivirus. http://www.avast.com/it-it/faq.php?article=AVKB11

3

I have installed Avast on a freshly installed Windows 7 PC, it was one,if not the first, program installed.

4

Try avast repair and see if that changes anything

Controlpanel > ad / remove programs > avast > uninstall / change > repair option … reboot

5

I have repaired the installation, I’ll update this thread in case the problem isn’t solved.
Thanks.

6

update
Apparently its not solved.

I was just downloading some video files a while ago, when I noticed the download stops at some point, browser will keep showing a “download speed” even if the download its simply inactive, dead. I tried to download it multiple times, no luck.

So I disabled all Avast’s protections and tried again, downloaded the same file no problem.

There must be something in my settings (which I haven’t touched) that tells Avast to eat alive my files before they are downloaded.

7

pumps
The problem further depends.
I have discovered that avast is the cause behind my connection’s randomly freezing and being unusable until a system restart.

I had these strange disconnections since a while now, didn’t realize the cause until now.

Avast its now really annoying me now…

8

follow OTL instructions … attach OTL diagnostic logs http://forum.avast.com/index.php?topic=53253.0

9

Hello

Malwarebytes’ Anti-Malware detected some threats in my PC, and it created a log file.
I also ran a scan with OTL
The last tool (aswMBR) is taking long so in the mean time I’ll just post the logs from the first 2 tools.

I’ll add aswMBR’s log later today.

10

essexboy is notified…

mostly PUP
PUP = not virus / Possible Unwanted Programs … usually crap that comes bundled with freeware downloads

but also a couple of keygens / crack … when the bad guys give away something for free, they usually add some extra programs :wink: dont use keygen/crack programs

11

On completion of this try a download and let me know the result

Warning This fix is only relevant for this system and no other, using on another computer may cause problems

Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot

Run OTL

[*]Under the Custom Scans/Fixes box at the bottom, paste in the following

https://dl.dropbox.com/u/73555776/OTL_Fix.GIF


:Commands
[CREATERESTOREPOINT]

:OTL
DRV:64bit: - [2014 04 24 12:32:28 | 000,061,120 | ---- | M] (StdLib) [Kernel | System | Running] -- C:\Windows\SysNative\drivers\{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}Gw64.sys -- ({2c976a7f-dbdc-4756-870f-f6d183fe7a7e}Gw64)
IE:64bit: - HKLM\SOFTWARE\Microsoft\Internet Explorer\Main,Search Page = http://www.sweet-page.com/web/?type=ds&ts=1398542192&from=cor&uid=WDCXWD1002FAEX-00Z3A0_WD-WCATRC72974329743&q={searchTerms}
IE - HKLM\SOFTWARE\Microsoft\Internet Explorer\Main,Search Page = http://www.sweet-page.com/web/?type=ds&ts=1398542192&from=cor&uid=WDCXWD1002FAEX-00Z3A0_WD-WCATRC72974329743&q={searchTerms}
[2014 04 26 23:30:22 | 000,061,120 | ---- | C] (StdLib) -- C:\Windows\SysNative\drivers\{2c976a7f-dbdc-4756-870f-f6d183fe7a7e}Gw64.sys
[2014 04 26 21:57:09 | 000,000,000 | ---D | C] -- C:\Users\Demon Dimension\AppData\Roaming\SupTab
[2014 04 26 21:57:08 | 000,000,000 | ---D | C] -- C:\Program Files (x86)\SupTab
[2014 04 26 21:57:02 | 000,000,000 | ---D | C] -- C:\ProgramData\WPM
[2014 04 26 21:56:45 | 000,000,000 | ---D | C] -- C:\Program Files (x86)\WiseEnhance
[2014 04 26 21:56:33 | 000,000,000 | ---D | C] -- C:\Users\Demon Dimension\AppData\Roaming\sweet-page

:Files
C:\Users\DEMOND~1\AppData\Local\Temp\nspD079.tmp

:Commands
[resethosts]
[emptytemp]
[Reboot]

[*]Then click the Run Fix button at the top
[*]Let the program run unhindered, reboot the PC when it is done
[*]Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.

12

Posting the last log.

Since its very short I’ll post it right here:

aswMBR version 0.9.9.1771 Copyright(c) 2011 AVAST Software
Run date: 2014-05-13 15:52:52

15:52:52.172 OS Version: Windows x64 6.1.7601 Service Pack 1
15:52:52.172 Number of processors: 4 586 0x3A09
15:52:52.173 ComputerName: MAINCOMPUTER UserName:
15:52:54.741 Initialze error C000010E - driver not loaded
15:52:57.507 AVAST engine defs: 14051301
15:53:02.330 Service scanning
15:53:14.505 Modules scanning
15:53:14.507 Disk 0 trace - called modules:
15:53:14.512
15:53:16.952 AVAST engine scan C:\Windows
15:53:19.706 AVAST engine scan C:\Windows\system32
15:54:53.887 AVAST engine scan C:\Windows\system32\drivers
15:55:03.632 AVAST engine scan C:\Users\Demon Dimension
16:02:57.908 AVAST engine scan C:\ProgramData
16:03:13.462 Scan finished successfully
17:20:07.427 The log file has been saved successfully to “C:\Users\Demon Dimension\Desktop\aswMBR.txt”

13
I was just downloading some video files a while ago
From where did you tried to download them and with what?