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Thread ID: 49874 2004-10-03 10:39:00 possible trojan or virus? tricky1 (6230) Press F1
Post ID Timestamp Content User
277939 2004-10-03 10:39:00 Hi everyone, I'm new to this forum and would like your opinion on a potential problem I'm having .

Recently after establishing a dial-up connection on my PC, I have noticed the internet connection icon - specifically the received bytes counter - is continually ticking over . It appears as though a lot of data is being downloaded and I have no idea what it is or where it's being downloaded .

Would this kind of activity indicate a trojan virus or something sinister?
Perhaps its harmless network traffic, but I'm unsure as the received bytes continually increases over for a period of about 5 minutes .

Has anyone else encountered this type of behavior before?

My virus definitions are always up to date and I use a software based firewall . I haven't received any firewall alerts however am concerned it may be something nasty as I have only noticed this has started occuring recently .

Thanks to anyone who can offer their thoughts on the matter .
tricky1 (6230)
277940 2004-10-03 10:47:00 Hi buddy , I note you have a software firewall - does it report anything while this activity is going on [? windows update , musicmatch etc ] . Have you installed , updated and run Spybot 1.3 and Ad Aware SE ?
It would be helpful to know a few more details eg OS [? Windows] , what is the firewall you're using , antivirus ...
KatiMike (242)
277941 2004-10-03 10:50:00 are you using XP if you are have you got auto update enabled
also if you look towards the the top of this page youll see a FAQ link, in there along with many other helpfull topics you will find a FAQ on this subject number 16 (pressf1.pcworld.co.nz) if I remember correctly

and lastly

WELCOME
beama (111)
277942 2004-10-03 10:52:00 Tricky,

Is it downloading or UP loading? Sending or Recieving? The connection dialogue should tell you.

Sending requires VERY urgent attention.

D.
drb1 (4492)
277943 2004-10-03 11:17:00 > Hi buddy , I note you have a software firewall - does
> it report anything while this activity is going on [?
> windows update , musicmatch etc ] . Have you
> installed , updated and run Spybot 1 . 3 and Ad Aware
> SE ?
> It would be helpful to know a few more details eg OS
> [? Windows] , what is the firewall you're using ,
> antivirus . . .

Hi thanks for your reply .

I am running XP Pro, Norton Internet Security 2003 - anti-virus and firewall .

From what I can see no there is no system update being peformed, WindowsUpdate or otherwise . The only strange looking entry in the firewall logs is the following, which is repeated a lot:

* An instance of "C:\Program Files\Messenger\msmsgs . exe" is preparing to access the Internet for the first time .

This is strange as the rules have been created for windows messenger . Also I have disabled it from starting when XP boots . . .

* TCP non-syn/non-ack packet on invalid connection . Packet has been dropped

This is the other repeating log entry - but less entries then above . It is repeated for various IP addresses .

I have older versions of spybot and ad aware, my next step was to install the latest versions and definition lists .
tricky1 (6230)
277944 2004-10-03 11:22:00 To beama and drb1, thank for your comments.

I will check out faq#16, thanks beama.

drb1 - as for is it either sending or receiving, it's definately receiving data not sending... phew
tricky1 (6230)
277945 2004-10-03 12:27:00 This program will enable you to see what is connected to your computer,
I find it very useful in the circumstances that you are reporting:

www.sysinternals.com
zqwerty (97)
277946 2004-10-03 20:56:00 just remember no antivirus software is going to detect 100% of viruses even if it is updated, good idea would be to us the online panda activescan at:


www.pandasoftware.com
Lee76 (6051)
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