Suspicious Lancefly TdiProxy Driver Loaded

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1543.003Windows Service
Priv Esc
- T1543.003Windows Service
Defense Evasion
- T1014Rootkit
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects loading of a kernel driver named TdiProxy.sys, installed as a service by Lancefly to intercept network traffic and support its Merdoor backdoor. This driver name is not associated with legitimate software.

Reporting behind it

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Suspicious Lancefly TdiProxy Driver Loaded

Pivot detection · T1543.003 · 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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