Strange DNS Queries - Request for Packets

Published: 2013-12-21
Last Updated: 2013-12-21 23:52:26 UTC
by Guy Bruneau (Version: 2)
5 comment(s)

We have received a pcap sample of DNS queries that display a strange behavior. The queries are type ANY for domains ghmn.ru and fkfkfkfa.com. When doing a nslookup, both domains have 100 IPs listed under their domain names with each of them resolving exactly the same last octets (i.e. .1, .10, .100, etc). Queries with the same transaction ID are often repeated several times. The traffic samples we have received indicate the queries are sent by either a host or a server.

If anyone else is seeing queries for either of these domains or queries with a similar behavior and can share some pcap or logs, you can submit them via our contact page.

Wireshark example of a query:

Update 1:

Domain fkfkfkfa.com

We have received logs that indicate this behavior has been ongoing as early as 23 Sep 2013.

Domain ghmn.ru

We have received logs that indicate this behavior has been ongoing as early as 15 Dec 2013.


[1] https://www.robtex.com/dns/ghmn.ru.html#shared
[2] https://www.robtex.com/dns/fkfkfkfa.com.html#shared

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Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu

5 comment(s)

Comments

Why is this strange? Looks like a garden-variety DNS amplification attack.
See here for more information: http://dnsamplificationattacks.blogspot.nl
[Duplicate post]
Rather than attackers using legitimate DNS records for amplification attacks, they are now registering their own domains that will generate large responses. I guess the ANY record for isc.org and "." are too popular anymore.
you can search any query error finding site through a good search..please make the proper change after that.

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