Re: Source port 445,80

[scott <redhowlingwolves () bellsouth net>]

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I would suggest trying to isolate the box that is sending these
scans.It has characteristics of a worm,obviously.

The switch or router that is seeing this traffic would be where I
would start looking.

If you can find what part of the network it originates from,maybe you
can find the box that is doing the scans.

Just a thought,
redhowlingwolves
Wong Yu Liang wrote:
> Thanks valdis I suspected so. Possibly a worm propagation and the
> ips detected the *return* traffic. But yet the alerts from my ips
> is very strange. Some alerts
>
> 172.16.1.254:80 -> 172.17.17.103:1434 MSSQL buffer overflow
> detected 172.16.1.254:80 -> 172.17.17.103:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.103:1434 MSSQL
> buffer overflow detected 172.16.1.254:80 -> 172.17.17.103:1434
> MSSQL buffer overflow detected 172.16.1.254:80 ->
> 172.17.17.103:1434 MSSQL buffer overflow detected 172.16.1.254:80
> -> 172.17.17.103:1434 MSSQL buffer overflow detected
> 172.16.1.254:80 -> 172.17.17.103:1434 MSSQL buffer overflow
> detected 172.16.1.254:80 -> 172.17.17.103:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected 172.16.1.254:80 -> 172.17.17.16:1434 MSSQL buffer
> overflow detected
>
> And the list goes on to different destination IP addres
>
>
>
> -----Original Message----- From: Valdis.Kletnieks () vt edu
> [mailto:Valdis.Kletnieks () vt edu] Sent: Thursday, September 06, 2007
> 5:36 AM To: Wong Yu Liang Cc: incidents () securityfocus com Subject:
> Re: Source port 445,80
>
> On Wed, 05 Sep 2007 18:47:42 +0800, Wong Yu Liang said:
>
> > Lately I've been getting a lot of awkward alerts with source port
> 445.
> > A few different source IP is connecting to one single IP from the
> > source port 445 , to random destination high ports.
>
> Is the destination IP address one that could conceivably be calling
> the *source* IPs on those ports, and you're looking at the
> *return* traffic?
>
> If so, it could be that the destination IP is being tricked into
> visiting malicious websites and the like, and what you're seeing is
> the website sending more malware down the now-open connection....
>
> (Just asking, because for a *long* time, we had to keep a canned
> response form for "ntp-1.vt.edu is hacking my ports from its port
> 123" complaints. Of course, the *real* story was they enabled NTP,
> sent us a packet - and then their firewall software triggered on
> the reply).
>
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ALERT: .How a Hacker Launches a SQL Injection Attack!.- White Paper 
It's as simple as placing additional SQL commands into a Web Form input box 
giving hackers complete access to all your backend systems! Firewalls and IDS 
will not stop such attacks because SQL Injections are NOT seen as intruders. 
Download this *FREE* white paper from SPI Dynamics for a complete guide to protection! 

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