Suspicious BeyondTrust Remote Support Probing of nw Endpoint via Webserver

ATT&CK techniques

Recon → Initial Access

Recon
- T1595.002Vulnerability Scanning
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects HTTP or WebSocket requests to the /nw endpoint on BeyondTrust Remote Support or Privileged Remote Access appliances, which is the reconnaissance and exploitation surface for CVE-2026-1731. Threat actors probe this endpoint to fingerprint and attack internet-facing BeyondTrust deployments prior to remote code execution. Early detection of this probing lets defenders block scanning infrastructure before exploitation succeeds.

Reporting behind it

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Suspicious BeyondTrust Remote Support Probing of nw Endpoint via Webserver

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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