From CrowdStrike Falcon to Wazuh

CrowdStrike Falcon prices per endpoint and per module, add XDR, identity, cloud, and data-retention tiers and the bill compounds, with annual minimums and uplifts on top. Wazuh is the most common open destination: a free, self-hosted XDR/SIEM platform combining endpoint detection, log analysis, file-integrity monitoring, vulnerability detection, and compliance reporting. Security migrations are unforgiving, there can be no coverage gap, so this one runs in rings with an extended dual-run, and you must be honest about the capability gap.

Know what you are actually giving up

Falcon is a managed, cloud-native EDR with a large threat-intelligence and managed-hunting operation behind it. Wazuh is a platform you operate: you run the manager, indexer, and dashboard, and you own detection content, tuning, and uptime. Wazuh is excellent at log-based detection, FIM, SCA/compliance, and rule-driven response, but it is not a behavioral next-gen EDR with CrowdStrike’s kernel-level prevention and managed threat hunting out of the box. If managed hunting (Falcon OverWatch-style) is core to your program, plan to replace that capability separately, not assume Wazuh covers it.

The mapping

• Falcon sensor → Wazuh agent (Windows/Linux/macOS), deployed via your config-management tooling.
• Falcon detections/IOAs → Wazuh rules and decoders (plus the bundled rulesets and SCA policies).
• Threat intel feeds → Wazuh integrations (MISP, VirusTotal, custom).
• Falcon console → Wazuh dashboard (OpenSearch-based).
• Active response → Wazuh active-response scripts (block IP, kill process, quarantine).
• Compliance reporting → Wazuh SCA + regulatory templates (PCI, CIS, etc.).

Ringed rollout and dual-run

1. Inventory endpoints and OS mix, current detections, exclusions, and SIEM/SOAR integrations. Note compliance controls the new stack must satisfy.
2. Stand up Wazuh (manager + indexer + dashboard, sized for your event volume and retention) and integrate it with your SIEM/ticketing and threat intel.
3. Recreate detections, exclusions, and active responses, and baseline endpoint performance impact on a pilot ring.
4. Roll out agents ring by ring (pilot → broad), running Wazuh alongside CrowdStrike so coverage never drops. Tune false positives at each ring.
5. Validate detections with safe tests (EICAR, atomic red-team), confirm active response fires, and check SIEM event flow.
6. Remove the Falcon sensor only on rings that have validated, never estate-wide at once.

The line between detecting and blocking

Be precise here, because the whole migration turns on it. Falcon is doing two jobs at once: it detects malicious activity, and it prevents it by autonomously blocking, killing, and quarantining at the kernel level, backed by CrowdStrike’s cloud intelligence. Wazuh cleanly covers the detection job. It ingests endpoint and log telemetry, evaluates it against rulesets and decoders, runs FIM and SCA, and correlates everything SIEM-style so your analysts see what happened. What Wazuh does not do is act as an autonomous, always-on prevention engine that stops a threat the instant it executes.

Wazuh does have active response, and it earns its place: scripts that block an IP, kill a process, or quarantine a host when a rule fires. But that is rule-triggered and script-driven, not the continuous behavioral prevention Falcon runs on the endpoint. The design that works is therefore a layered one. Keep an active prevention layer on the endpoint, typically the OS-native controls (built-in antivirus and host-based protections), and let Wazuh be the detection, correlation, and response brain on top. Decide that split before you deploy a single agent, because retrofitting a prevention layer after you have removed Falcon means running exposed in the interim.

Rebuilding Falcon’s logic as Wazuh rules

None of your Falcon configuration exports into Wazuh, so plan to reimplement intent, not copy settings. Falcon detections and IOAs become Wazuh rules and decoders layered on the bundled rulesets. Prevention and exclusion policies split two ways: the detection logic becomes Wazuh rules, and the actual blocking behavior moves to your chosen OS-native prevention layer. Threat-intel feeds you consumed inside Falcon get rewired as Wazuh integrations, for example MISP or VirusTotal, so enrichment still lands on alerts. Compliance controls map to Wazuh SCA policies and the regulatory templates (PCI, CIS, and similar).

Resist the urge to recreate every Falcon setting one-to-one. Start from Wazuh’s out-of-the-box rules and CIS benchmarks, then add custom rules only for the specific behaviors and exclusions that matter in your environment. Over-porting is how teams end up with an unmanageably noisy console on day one.

The agent-conflict gotcha

Two endpoint agents on one host can fight, performance hits, driver conflicts, or one suppressing the other. Stagger installs, test thoroughly on the pilot ring, and keep your SOC in the loop so alert routing isn’t dropped mid-migration. Keep CrowdStrike as the authoritative sensor until each ring’s Wazuh detections are proven.

Clearing the bar before you cut over

The acceptance bar is detection parity for the threats you care about: run your detection test suite against both systems, verify exclusions and active response, confirm SIEM ingestion and dashboards, and check compliance reports render. Only decommission Falcon ring by ring as each clears.

The short version

CrowdStrike → Wazuh removes per-endpoint and per-module cost in exchange for operating your own XDR/SIEM and replacing managed hunting separately. The work is detection re-creation, ringed rollout, and disciplined dual-run, never a flip-the-switch cutover. Model your per-endpoint savings in the calculator above, and treat them as illustrative until you’ve scoped the operational and threat-hunting capacity you’re taking on.