TomJ wrote:
> On Sun, 12 Aug 2007 14:54:25 -0400, Andy Walker
> <awalker@nspank.invalid> wrote:
>
>> TomJ wrote:
>>
>>> I recently installed SUPERantispyware and ran a complete scan of
>>> system. It found an Adaware cookie and two codec files.
>>> I deleted all three because I no longer use Adaware and I wasn't
>>> comfortable with the codec files anyway.
>>>
>>> However, during the scan, Avast came up and told me:
>>>
>>> File A0047921.exe was a trojan. win32:Zlob-TW
>>>
>>> So I quarantined it.
>>>
>>> But what I'm curious about is why Avast interrupted the
>>> Superantispyware scan.
>>> Why didn't Avast find this trojan on any of many previous scans?

>> Anti-virus scanners only work when they actually have the opportunity
>> to scan files. Since SAS was doing a full scan it opened the
>> "A00479214.exe" file for scanning and Avast then scanned the file as
>> part of the "on access" scanning function. The moral of the story is
>> that in order to be fully covered by any anti-malware program, you
>> need to perform full scans on a regular basis and not rely on
>> on-access scanning to catch the malware.

>
>
> OK, but I have done (do) full scans w/Avast on regular basis and it
> never caught this file before. Why now?
>
> TomJ
>

try submitting the file to virus total and see what the other anti virus
companies think of the file. the link is listed below, delete the spaces
to have a usable url.

http: //www .virustotal .com/