Endpoint logs indicate that a machine has obtained an unusual gateway address and unusual DNS...

The situation where endpoint logs show a machine receiving an unusual gateway address and DNS servers via DHCP is indicative of a Man-in-the-Middle (MitM) attack, specificallya DHCP spoofing attack. In this type of attack, an adversary can set up a rogue DHCP server or manipulate the DHCP communication to provide false gateway and DNS information to clients. This allows the attacker to intercept, monitor, or manipulate traffic between the client and the intended gateway or DNS servers2.