Avast webshield not working properly

Discussion in 'other anti-virus software' started by phyniks, Feb 27, 2012.

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  1. phyniks

    phyniks Registered Member

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    I have received a spam in my yahoo mail which contained a virus.
    while downloading(chrome 17 as the browser) the webshield warned and said the malware is blocked:

    http://www.avast.com/lp-security-information-fp2?p_ext=&utm_campaign=Virus_alert&utm_source=prg_fav_70_0&utm_medium=prg_systray&utm_content=.%2Ffa%2Fen-ww%2Fvirus-alert-challenger2&p_vir=Win32:Ufraie-J&p_prc=&p_obj=&p_var=.%2Ffa%2Fen-ww%2Fvirus-alert-default2&p_pro=0&p_vep=7&p_ves=0&p_lqa=0&p_lsu=24&p_lst=0&p_lex=369&p_lng=en&p_lid=en-ww&p_elm=7&p_vbd=1407

    but surprisingly the download process was not terminated and the malware(which was in a zipped file)come through my MY DOCUMENTS!!!
    scanning the file showed the virus was there,it was not harmful because it was in a zipped file but the webshield could not block the download process
    I dont know if it is a bug or I have to change the setting(set by default)
    I m using avast 7 free 7.0.1407
    Win7 home premium 64bit
     
  2. vlk

    vlk AV Expert

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    I assume the file was truncated though?
    Yes, if your browser doesn't delete interrupted downloads, there's not much the http scanner can do about that...
     
  3. phyniks

    phyniks Registered Member

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    Update:
    I downloaded the file 8 times(its size is 27.3kb)
    5 times the webshield warned before the download process and it was blocked properly
    3 times the webshield warned after the browser stated to download and the file got through and webshield just warned,no actual blocking!!!
    I think this is the bug,I hope avst will fix it
     
  4. vlk

    vlk AV Expert

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    Wasn't it coming from the browser cache then? Web Shield only sits on the HTTP layer...
     
  5. phyniks

    phyniks Registered Member

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    well
    I dont know my friend (I m not that expert)
    All I know is that the file came through and sat on MY DOCUMENTS/DOWNLOAD
    to find out the case there is 2 way:
    1-send me your email(in a private mess.) and I will forward the mail to you,if you want

    2-I have submitted the ticket in avast support center:
    https://support.avast.com/index.php?_m=tickets&_a=viewticket&ticketid=2654986

    download the file,send it from one of your mail to another,then download it from secondary email

    I have started the same topic here:http://forum.avast.com/index.php?topic=94344.msg752452#msg752452
     
  6. Kid Shamrock

    Kid Shamrock Registered Member

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    Are you using AdMuncher by any chance? If you are that could be the reason the file was still downloaded. AdMuncher acts as a proxy and prevents the WebShield from blocking the download as it should. It's a known incompatibility.
     
  7. phyniks

    phyniks Registered Member

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    Posts:
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    No Sir
    But thanks for the information
     
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