What is Lateral Movement?
Lateral Movement is a set of techniques attackers use to move from one compromised system to other systems inside a network after gaining initial access. The goal is to reach higher-value targets such as domain controllers, databases, or sensitive file shares.
What it is
Lateral Movement describes the phase of an attack that follows initial compromise. Once inside a network, an attacker pivots from the first foothold to other internal systems. Common techniques include:
- Pass-the-hash and pass-the-ticket: reusing stolen credential material without knowing the plaintext password.
- Remote service abuse: using protocols like RDP, SMB, WMI, or SSH to log into adjacent machines.
- Living-off-the-land: running built-in OS tools such as PsExec, PowerShell remoting, or WMI to avoid dropping new files.
- Token impersonation: stealing or forging authentication tokens to act as another user.
The attacker's path often looks like normal administrative traffic, which makes detection hard.
Why it matters
Lateral Movement is the bridge between a low-value entry point and a high-value target. Most breaches that cause serious damage, such as ransomware spreading across an entire domain or data exfiltration from a core database, require successful lateral movement. Stopping it limits the blast radius of any initial compromise. Dwell time, the gap between first access and detection, is largely spent on lateral movement. Shortening that window reduces harm.
How tools address it
Network Detection and Response (NDR) platforms watch internal east-west traffic for patterns that match lateral movement. They record connections, flag unusual protocol use between hosts that rarely communicate, and alert on credential-relay attempts. Tools like Arkime capture full packet data for forensic review after an alert fires. Managed NDR services such as Hyprfire Firebug use passive traffic metadata to hunt for these patterns without agents on every host. Platforms like Cyber 2.0 focus on blocking attack spread across IT and OT environments.
Beyond NDR, other controls reduce lateral movement risk: