RE: ICMP PING CyberKit 2.2 Windows

[<nelsbels () cableone net>]

Check this out: (This is from incidents.org)

Over the last few hours, sensors detected a remarkable increase in ICMP
traffic. At this point, we assume that the traffic is linked to the 'Nachi'
worm:http://vil.nai.com/vil/content/v_100559.htm The worm is also known as
'Welchia' (
http://securityresponse.symantec.com/avcenter/venc/data/w32.welchia.worm.htm
l )

While the investigation is still in progress, we did identify so far the
following characteristics:

- some of the traffic is spoofed
- the data content is all '170' (0xAA)
- ICMP echo requests (type 8, code 0)

Source-Target correlation fingerprints ICMP
Data:http://isc.sans.org/images/icmpfp.png
all Data:http://isc.sans.org/images/allfp.png
port 135:http://isc.sans.org/images/port135fp.png

Sample Packet
(target IP obfuscated)

0x0000   4500 005c 2dc8 0000 7901 66a6 4349 919e        E..\-...y.f.CI..
0x0010   xxxx xxxx 0800 3318 0200 6d92 aaaa aaaa        ......3...m.....
0x0020   aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa        ................
0x0030   aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa        ................
0x0040   aaaa aaaa aaaa aaaa aaaa aaaa aaaa aaaa        ................
0x0050   aaaa aaaa aaaa aaaa aaaa aaaa                  ............

Snort identifies these packets as "ICMP PING CyberKit 2.2 Windows".


> So what's the deal with the 72000 odd ICMP PING CyberKit 2.2 Windows alerts
> I've got in the past few days??  It's frickin crazy...  I've read the posts
> on here, but what is actually causing this and is there anything I can do
at
> my perimeter to stop these ICMP messages hitting my network??
> It's just annoying and I don't want to remove the rule that picks up on the
> ICMP PING CyberKit 2.2 Windows!!

> Ideas??



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