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05.02.2008 at 02:47AM PDT, ID: 23371086
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Symptom of BotNet? Spurious web server log entries

Tags: Web server log entries
Here are the facts;
" Web server + website (IIS on W2003+SP2) for internal locally based team in UK. Installed 2 weeks ago
" Not configured to support WebDav, WebDav is disabled
" Website on server in Active Directory domain
Problem;
Outside of my small team in the UK the fact that the website exists is unknown, no-one has been notified about this website.
However, I am getting corporate PC clients (all WXP) from all our European sites (different IP subnets) making WebDav requests for folders that do not exist on the web server.
Concern;
1. How do these PCs know of the website's existence?
2. Could this be some piece of malware attempting to propagate and is undetectable by our AntiX solution?
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Question Stats
Zone: Security
Question Asked By: SimonRW
Solution Provided By: martin_babarik
Participating Experts: 2
Solution Grade: B
Views: 0
Translate:
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05.02.2008 at 06:10AM PDT, ID: 21486293

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05.02.2008 at 09:54AM PDT, ID: 21488223

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05.07.2008 at 08:30AM PDT, ID: 21517456

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05.02.2008 at 06:10AM PDT, ID: 21486293
Question updated
 
05.02.2008 at 09:54AM PDT, ID: 21488223
Hi,
I'd say it might be a problem of the name resolution. To be more specific - some slightly incorrect configuration settings on the DNS on clients' site. There might be configured the way that when somebody tries to access a shared folder, do some typo, their DNS resolver will somehow obtain the information from your DNS server and the client will accidentally attempt to be authenticated on your web server.
Maybe non-sense, but something like that is possible. I know nothing about your network structure so I'm not able to say it for sure.
Basically I'd say your corporate clients know about your web server either from the DNS server or from Active Directory.
Accepted Solution
 
05.07.2008 at 08:30AM PDT, ID: 21517456
i would guess that these are bots from any other infected hosts that are scanning random ip adresses and check for the existance of webdav enabled folders that can cause a full overtake of a server if the folder rights arent configured properly on a webdav enabled webserver.

so as a conclusion.. nothing you should have to worry about aslong your server is setup properly.
 
 
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