Any assault that targets the dependability or availability of a network’s DNS service is referred to as a DNS attack. DNS attacks also include attacks like cache poisoning that use DNS as a tool as part of their larger attack plan. We will gain an overview of the most prevalent types of DNS attacks in this essay.

DNS has long been regarded as one of the most important internet services available. It is a crucial element that enables your computer to display stuff before your eyes. DNS is used by email services, chat services, and even social networks to resolve IP addresses into hostnames around-the-clock.

Attack 1

The installation of malware. This may be accomplished by intercepting DNS requests and returning nefarious IP addresses as a response. By sending requests to phishing domains, malware installation can also be accomplished.

Forward DNS lookups for typosquatting, domain names that are similar in spelling or appearance (like google.com), changes to the hosts file, and DNS cache poisoning are signs of compromise.

Attack 2

Theft of credentials. In order to steal credentials, an attacker may build a rogue domain name that looks like a valid domain name.

Forward DNS lookups for typosquatting, domain names that are similar in spelling or appearance (like google.com), changes to the hosts file, and DNS cache poisoning are signs of compromise.

Attack 3

Command and Control communication. After an initial compromise, DNS communications are utilized improperly to contact a C2 server as part of lateral movement. This often entails performing recurrent DNS requests from a computer inside the target network for a domain that the attacker controls. The responses come with encoded messages that could be exploited on the target network to carry out unauthorized operations.

DNS beaconing queries to strange domains, a short time-to-live, and orphan DNS requests are all signs of compromise.

Attack 4

Network footprinting is attack type 4. DNS requests are used by adversaries to create a network map. Attackers must create a map since they depend on the terrain for their livelihood.

Compromise indicators include a high volume of PTR requests, SOA and AXFER inquiries, and forward DNS lookups for fictitious subdomains in the root domain.

Attack 5

Data Theft. iMsuse of DNS for data transfer; possible methods include FTP and SSH tunneling through DNS requests and answers. Attackers send many DNS requests to an adversary-owned domain from a compromised computer. Additionally, DNS tunneling can be used to run commands and introduce malware into the target network.

Huge numbers of subdomain lookups or large lookup sizes, lengthy subdomains, and unusual query types are signs of compromise (TXT records).

Any organization that uses the internet should critically consider this problem and incorporate appropriate countermeasures into their security plan. If you feel like you need help with preventing this event, talk to us today.