Malicious Glupteba UEFI Bootkit EfiGuard Driver Drop to ESP (via file_event)

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1542.003Bootkit
Priv Esc
Defense Evasion
- T1542.003Bootkit
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the creation of the EfiGuardDxe.efi driver, a component the Glupteba bootkit writes to the EFI System Partition to disable driver signature enforcement and PatchGuard. Persisting below the operating system through a UEFI bootkit gives Glupteba stealthy survival across reinstalls, so any drop of this driver signals a serious firmware level compromise.

Reporting behind it

Related detections6 linkedT1542.003 — drag to rearrange

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Malicious Boot Configuration Tampering via bcdedit (via process_creation)

Windows bcdedit.exe Tampering for MBR/Boot Persistence (Delete, Import, SafeBoot, Network)

Malicious Glupteba UEFI Bootkit EfiGuard Driver Drop to ESP (via file_event)

Pivot detection · T1542.003 · 6 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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