----- Original Message -----
From: "Piotr Kamisiski" <rotunda (at) ktd.krakow (dot) pl [email concealed]>
To: <bugtraq (at) securityfocus (dot) com [email concealed]>
Sent: Sunday, November 27, 2005 11:30 PM
Subject: DNS query spam
Hi all,
Recently my DNS servers get jammed with bogus queries. The attacks come in
series, taking a few minutes each, sometimes from different IPs at the
same time, at least twice a day.
<snap>
23:05:40.241026 IP 204.92.73.10.40760 > xx.xx.xx.xx.53: 38545+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:41.600902 IP 204.92.73.10.16561 > xx.xx.xx.xx.53: 22242+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:42.091743 IP 204.92.73.10.37547 > xx.xx.xx.xx.53: 64644+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:43.433539 IP 204.92.73.10.32370 > xx.xx.xx.xx.53: 31772+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:43.854481 IP 204.92.73.10.12913 > xx.xx.xx.xx.53: 33470+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:44.378640 IP 204.92.73.10.62484 > xx.xx.xx.xx.53: 8726+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:45.368970 IP 204.92.73.10.57384 > xx.xx.xx.xx.53: 1073+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:45.379251 IP 204.92.73.10.36997 > xx.xx.xx.xx.53: 22257+ [1au] ANY
ANY? e.mpisi.com. (40)
<snap>
the Recent module when a number of tries is reached.
This is the content of the packet:
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
=+
11/20/05-19:17:37.177173 168.143.XXX.XX:11752 -> YYY.YYY.Y.YY:53
UDP TTL:233 TOS:0x0 ID:34960 IpLen:20 DgmLen:68 DF
Len: 48
0x0000: 00 07 95 C2 6A 32 00 04 76 DA CB 14 08 00 45 00 ....j2..v.....E.
0x0010: 00 44 88 90 40 00 E9 11 2A D5 A8 8F 71 0A C0 A8 .D.. (at) . (dot) . [email concealed]*...q...
0x0020: 04 01 2D E8 00 35 00 30 00 00 20 9E 01 00 00 01 ..-..5.0.. .....
0x0030: 00 00 00 00 00 01 01 65 05 6D 70 69 73 69 03 63 .......e.mpisi.c
0x0040: 6F 6D 00 00 FF 00 FF 00 00 29 27 10 00 00 00 00 om.......)'.....
0x0050: 00 00 ..
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
=+
Regards,
Josep Ma Castells
----- Original Message -----
From: "Piotr Kamisiski" <rotunda (at) ktd.krakow (dot) pl [email concealed]>
To: <bugtraq (at) securityfocus (dot) com [email concealed]>
Sent: Sunday, November 27, 2005 11:30 PM
Subject: DNS query spam
Hi all,
Recently my DNS servers get jammed with bogus queries. The attacks come in
series, taking a few minutes each, sometimes from different IPs at the
same time, at least twice a day.
<snap>
23:05:40.241026 IP 204.92.73.10.40760 > xx.xx.xx.xx.53: 38545+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:41.600902 IP 204.92.73.10.16561 > xx.xx.xx.xx.53: 22242+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:42.091743 IP 204.92.73.10.37547 > xx.xx.xx.xx.53: 64644+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:43.433539 IP 204.92.73.10.32370 > xx.xx.xx.xx.53: 31772+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:43.854481 IP 204.92.73.10.12913 > xx.xx.xx.xx.53: 33470+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:44.378640 IP 204.92.73.10.62484 > xx.xx.xx.xx.53: 8726+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:45.368970 IP 204.92.73.10.57384 > xx.xx.xx.xx.53: 1073+ [1au] ANY
ANY? e.mpisi.com. (40)
23:05:45.379251 IP 204.92.73.10.36997 > xx.xx.xx.xx.53: 22257+ [1au] ANY
ANY? e.mpisi.com. (40)
<snap>
Has anyone noticed a similar activity?
Best regards,
Piotr Kamisiñski
[ reply ]