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Thread View: alt.comp.anti-virus
5 messages
5 total messages Started by Gerry Thu, 29 Apr 2004 22:09
Virus question for the experts... or who-ever
#133
Author: Gerry
Date: Thu, 29 Apr 2004 22:09
28 lines
1872 bytes
Ok I'll try to be as brief as possible,

I got an email today from my ISP, claiming that I am sending out virus's, 
which is a violation of the terms of use, (obviously) and I may not be aware 
of the infection and they recommended several a/v scanners, of which I run 1 
they recommend, AVG, I also run F-prot and 'The Cleaner"
all of these found nothing, I then ran Trends 'house call' and it found 
nothing, to my relief.

So, my question to the group is, how can someone claim to have got an 
infected email from me when my system shows up clean, is there a way of using 
the i.p address I am connected to via a port scanner etc, to 'bounce' a virus 
or am I in fantasy land??

Or has a contact of mine become infected and the virus/worm is using my email 
address from their address book to implicate me??


thanks for any thoughts.

btw my friend that had the pulez trojan has his problem rectified, 
ta for the advice on that one.



-- 
Gerry
Re: Virus question for the experts... or who-ever
#134
Author: bassbag
Date: Thu, 29 Apr 2004 22:28
31 lines
1986 bytes
In article <Xns94DB534F3B3A5noemailthispcok@211.29.133.50>, no-
email@this.pc.ok says...
> 
> Ok I'll try to be as brief as possible,
> 
> I got an email today from my ISP, claiming that I am sending out virus's, 
> which is a violation of the terms of use, (obviously) and I may not be aware 
> of the infection and they recommended several a/v scanners, of which I run 1 
> they recommend, AVG, I also run F-prot and 'The Cleaner"
> all of these found nothing, I then ran Trends 'house call' and it found 
> nothing, to my relief.
> 
> So, my question to the group is, how can someone claim to have got an 
> infected email from me when my system shows up clean, is there a way of using 
> the i.p address I am connected to via a port scanner etc, to 'bounce' a virus 
> or am I in fantasy land??
> 
> Or has a contact of mine become infected and the virus/worm is using my email 
> address from their address book to implicate me??
> 
> 
> thanks for any thoughts.
> 
> btw my friend that had the pulez trojan has his problem rectified, 
> ta for the advice on that one.
> 
> 
> 
> 
More than likely the latter explanation.
me
Re: Virus question for the experts... or who-ever
#135
Author: Ken Taylor
Date: Thu, 29 Apr 2004 22:42
42 lines
2371 bytes
"Gerry" <no-email@this.pc.ok> wrote in message
news:Xns94DB534F3B3A5noemailthispcok@211.29.133.50...
>
> Ok I'll try to be as brief as possible,
>
> I got an email today from my ISP, claiming that I am sending out virus's,
> which is a violation of the terms of use, (obviously) and I may not be
aware
> of the infection and they recommended several a/v scanners, of which I run
1
> they recommend, AVG, I also run F-prot and 'The Cleaner"
> all of these found nothing, I then ran Trends 'house call' and it found
> nothing, to my relief.
>
> So, my question to the group is, how can someone claim to have got an
> infected email from me when my system shows up clean, is there a way of
using
> the i.p address I am connected to via a port scanner etc, to 'bounce' a
virus
> or am I in fantasy land??
>
> Or has a contact of mine become infected and the virus/worm is using my
email
> address from their address book to implicate me??
>
>
> thanks for any thoughts.
>
> btw my friend that had the pulez trojan has his problem rectified,
> ta for the advice on that one.
>
>
>
> -- 
> Gerry

I agree with the latter. Ask the help desk for a copy of headers of
virus-infected e-mails going out (presumably they've received a complaint).
The headers should show whether it's you or not. Likely they can't provide
the information, in which case ask them to justify their first message.

Ken
Re: Virus question for the experts... or who-ever
#136
Author: Gerry
Date: Fri, 30 Apr 2004 00:23
39 lines
2484 bytes
> 
> I agree with the latter. Ask the help desk for a copy of headers of
> virus-infected e-mails going out (presumably they've received a complaint).
> The headers should show whether it's you or not. Likely they can't provide
> the information, in which case ask them to justify their first message.
> 
> Ken
> 
> 
> 
Thanks for the tip Ken,

Just spoke to the help desk, told them how many a/v programs I use and trojan 
scanner etc, the cso was reasonably pc savvy, then I mentioned how many 
fellow Optus customer port scans I see and never complain about as I figure 
zonealarm is doing it's job.. 

They say they give a 7 day grace and if it happens again they contact you, by 
phone, then after that a suspension of the account, though he seems to think 
I don't/won't have a problem, 

He couldnt tell me much more than that (how many complaints etc) even to the 
point of when the virus email occurred, as I wasnt on line on the day when 
they sent the email to me... sounds a bit sus to me...
I did suggest about a contact maybe being infected and he tended to agree.


I never thought about the headers, and never thought about having them prove 
it, I guess I took them at their word, bad move eh! will see what transpires, 
I might ask them to send proof...

I did offer to email them a screen capture of the 3 a/v's & trojan results, 
but I said to him they probably wouldn't accept the attachments.  (screen 
caps kept anyway for future arguements.)



-- 
Gerry
Re: Virus question for the experts... or who-ever
#137
Author: FromTheRafters
Date: Fri, 30 Apr 2004 01:24
58 lines
3323 bytes
"Gerry" <no-email@this.pc.ok> wrote in message news:Xns94DB534F3B3A5noemailthispcok@211.29.133.50...
>
> Ok I'll try to be as brief as possible,
>
> I got an email today from my ISP, claiming that I am sending out virus's,
> which is a violation of the terms of use, (obviously) and I may not be aware
> of the infection and they recommended several a/v scanners, of which I run 1
> they recommend, AVG, I also run F-prot and 'The Cleaner"
> all of these found nothing, I then ran Trends 'house call' and it found
> nothing, to my relief.

Not finding is not the same as not having. Some malware
will have disabled the scanners' ability to provide trusted
results. Did you scan from a clean DOS environment?
...or at least from "Safe Mode"?

...but that is sort of beside the point.

Your machine is "probably" not the culprit anyway.
(see the other answers to your query)

> So, my question to the group is, how can someone claim to have got an
> infected email from me when my system shows up clean, is there a way of using
> the i.p address I am connected to via a port scanner etc, to 'bounce' a virus
> or am I in fantasy land??

I don't know much about packet spoofing, but I suppose it *is* a
(very remote) possibility.

But consider:

What, to the ISP, may be a single IP# assigned to you at a time
when malware laden e-mails were purportedly sent, may be to
you, one of many machines using that IP# by IP masquerading.
If you have a wireless network (LAN), and have not secured it
 - yes - someone else may have actually been sending out said
malware from *your* assigned IP#. It may be a bad assumption
on my part that the ISP involved would know better than to trust
addresses as they appear in e-mail headers - and would instead
use the valid connection information to ascertain that it was indeed
your assigned IP# that, at that time, that was responsible for sending
out the malware.

> Or has a contact of mine become infected and the virus/worm is using my email
> address from their address book to implicate me??

Much more likely, and *very* common these days.

> thanks for any thoughts.

Your ISP *should* know the difference between an e-mail that is
pretending to be from you, and e-mail that actually did originate
from a computer using the IP# assigned to you by them.

...but some of them are as clueless as they come.

[snip]
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