Malware installation: This may be done by hijacking DNS queries and responding with malicious IP addresses. Command & Control communication: As part of lateral movement, after an initial compromise, DNS communications is abused to communicate with a C2 server. This typically involves making periodic DNS queries from a computer in the target network for a domain controlled by the adversary. The responses contain encoded messages that may be used to perform unauthorized actions in the target network. Network footprinting: Adversaries use DNS queries to build a map of the network. Attackers live off the terrain so developing a map is important to them. Data theft (exfiltration): Abuse of DNS to transfer data; this may be performed by tunneling other protocols like FTP, SSH through DNS queries and responses. Attackers make multiple DNS queries from a compromised computer to a domain owned by the adversary. DNS tunneling can also be used for executing commands and transferring malware into the target network. Reference: https://www.netsurion.com/articles/5-types-of-dns-attacks-and-how-to-detect-them Command & Control communication: As part of lateral movement, after an initial compromise, DNS communications is abused to communicate with a C2 server. This typically involves making periodic DNS queries from a computer in the target network for a domain controlled by the adversary. The responses contain encoded messages that may be used to perform unauthorized actions in the target network.
Network footprinting: Adversaries use DNS queries to build a map of the network. Attackers live off the terrain so developing a map is important to them.
Data theft (exfiltration): Abuse of DNS to transfer data; this may be performed by tunneling other protocols like FTP, SSH through DNS queries and responses. Attackers make multiple DNS queries from a compromised computer to a domain owned by the adversary. DNS tunneling can also be used for executing commands and transferring malware into the target network.
Malware installation: This may be done by hijacking DNS queries and responding with malicious IP addresses. Command & Control communication: As part of lateral movement, after an initial compromise, DNS communications is abused to communicate with a C2 server. This typically involves making periodic DNS queries from a computer in the target network for a domain controlled by the adversary. The responses contain encoded messages that may be used to perform unauthorized actions in the target network. Network footprinting: Adversaries use DNS queries to build a map of the network. Attackers live off the terrain so developing a map is important to them. Data theft (exfiltration): Abuse of DNS to transfer data; this may be performed by tunneling other protocols like FTP, SSH through DNS queries and responses. Attackers make multiple DNS queries from a compromised computer to a domain owned by the adversary. DNS tunneling can also be used for executing commands and transferring malware into the target network. Reference: https://www.netsurion.com/articles/5-types-of-dns-attacks-and-how-to-detect-them

Reference: https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/215470- site-to-site-vpn-configuration-on-ftd-ma.html

Reference: