If you are seeing queries for this domain, than you are likely participating in DNS Amplification attacks and your DNS server is probably reachable from the internet and has recursion enabled.
If you are seeing responses for this domain.. unlucky. You are currently beeing DDOS-ed! Good luck.
IPtables:
There are two iptable rules available. If your distribution supports Iptables 'u32' module pick this one, otherwise use the 'string' rule.
U32:
iptables --insert INPUT -p udp --dport 53 -m u32 --u32 "0x28&0xFFDFDFDF=0x0d504950 && 0x2c&0xDFDFDFDF=0x43565345 && 0x30&0xDFDFDFDF=0x4d4e4148 && 0x34&0xDFDFFFDF=0x45520343 && 0x38&0xDFDFFF00=0x4f4d0000" -j DROP -m comment --comment "DROP DNS Q pipcvsemnaher.com"
More U32 rules can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist.txt
String:
iptables --insert INPUT -p udp --dport 53 -m string --from 40 --to 59 --algo bm --hex-string '|0D706970637673656d6e6168657203636f6d00|' -j DROP -m comment --comment "DROP DNS Q pipcvsemnaher.com"
More Iptables rules for the STRING module can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist-string.txt
Source:
No IP source for this domain
Name server:
;; ANSWER SECTION:
pipcvsemnaher.com. 10800 IN NS a.dns.gandi.net.
pipcvsemnaher.com. 10800 IN NS c.dns.gandi.net.
pipcvsemnaher.com. 10800 IN NS b.dns.gandi.net.
;; ADDITIONAL SECTION:
a.dns.gandi.net. 86400 IN A 173.246.97.2
a.dns.gandi.net. 86400 IN AAAA 2604:3400:a::2
b.dns.gandi.net. 86400 IN A 217.70.184.40
b.dns.gandi.net. 86400 IN AAAA 2001:4b98:b:a::40
c.dns.gandi.net. 86400 IN A 217.70.182.20
c.dns.gandi.net. 86400 IN AAAA 2001:4b98:c:521::20
Response:
A 240
MX 2
NS 3
SOA 1
Rsize 4013
Whois
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
Domain Name: PIPCVSEMNAHER.COM
Registrar: GANDI SAS
Whois Server: whois.gandi.net
Referral URL: http://www.gandi.net
Name Server: A.DNS.GANDI.NET
Name Server: B.DNS.GANDI.NET
Name Server: C.DNS.GANDI.NET
Status: clientTransferProhibited
Updated Date: 27-sep-2013
Creation Date: 27-sep-2013
Expiration Date: 27-sep-2014
>>> Last update of whois database: Thu, 17 Oct 2013 22:10:35 UTC <<<
NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar. Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.
The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.
--- #YAML:1.0
# GANDI Registrar whois database for .COM, .NET, .ORG., .INFO, .BIZ, .NAME
#
domain: pipcvsemnaher.com
reg_created: 2013-09-27 19:48:23
expires: 2014-09-27 19:48:23
created: 2013-09-27 21:48:23
changed: 2013-10-03 12:26:18
transfer-prohibited: yes
ns0: a.dns.gandi.net
ns1: b.dns.gandi.net
ns2: c.dns.gandi.net
owner-c:
nic-hdl: DP4983-GANDI
organisation: ~
person: Denis Pulman
obfuscated: Obfuscated by Gandi
address: (Gandi) 63-65 boulevard Massena
zipcode: (Gandi) 75013
city: (Gandi) Paris
country: (Gandi) France
phone: (Gandi) +33.170377666
fax: (Gandi) +33.143730576
email: af703dda29383534e30a3133cc4c41cc-1785642@contact.gandi.net
lastupdated: 2013-09-27 17:57:31
admin-c:
nic-hdl: DP4983-GANDI
organisation: ~
person: Denis Pulman
obfuscated: Obfuscated by Gandi
address: (Gandi) 63-65 boulevard Massena
zipcode: (Gandi) 75013
city: (Gandi) Paris
country: (Gandi) France
phone: (Gandi) +33.170377666
fax: (Gandi) +33.143730576
email: af703dda29383534e30a3133cc4c41cc-1785642@contact.gandi.net
lastupdated: 2013-09-27 17:57:31
tech-c:
nic-hdl: DP4983-GANDI
organisation: ~
person: Denis Pulman
obfuscated: Obfuscated by Gandi
address: (Gandi) 63-65 boulevard Massena
zipcode: (Gandi) 75013
city: (Gandi) Paris
country: (Gandi) France
phone: (Gandi) +33.170377666
fax: (Gandi) +33.143730576
email: af703dda29383534e30a3133cc4c41cc-1785642@contact.gandi.net
lastupdated: 2013-09-27 17:57:31
bill-c:
nic-hdl: DP4983-GANDI
organisation: ~
person: Denis Pulman
obfuscated: Obfuscated by Gandi
address: (Gandi) 63-65 boulevard Massena
zipcode: (Gandi) 75013
city: (Gandi) Paris
country: (Gandi) France
phone: (Gandi) +33.170377666
fax: (Gandi) +33.143730576
email: af703dda29383534e30a3133cc4c41cc-1785642@contact.gandi.net
lastupdated: 2013-09-27 17:57:31
Check azmx.ru
ReplyDeleteThanks, added! Seen attacks since yesterday.
Deleteand txt.fwserver.com.ua
ReplyDeleteThanks! Almost the same as: txt.pwserver.com.ua
DeleteSeeing x.mpnp.info
ReplyDelete