Re: Strange Snort Warning: Hello, is anybody home?

[Matt Kettler <mkettler () evi-inc com>]

AFAIK these are typical of command packets attempting to discover if the 
machine targeted has the "Q" backdoor/trojan.

Always seen with source IP 255.255.255.255 flowing in.

At 03:41 PM 9/4/2002 -0700, Sandy Biring wrote:
> Snort newbie here ....
>
> I saw this alert in ACID today (9 packets in total):
>
> Source Addr: 255.255.255.255 Dest Addr: 10.0.4.8 Type: (0) Echo Reply
> Code: (0) 0 Checksum: 1276
> Payload:
>
> length = 24
>
> 000 : 48 65 6C 6C 6F 2C 20 69 73 20 61 6E 79 62 6F 64   Hello, is anybod
> 010 : 79 20 68 6F 6D 65 3F 00                           y home?.
>
>
>
> Another alert shows the same payload, but 10.0.4.8 as the source and the
> destination! (it is a Win2k server)
>
>
> Can anyone tell me what this is, and if its anything to worry about???



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