Suspicious SafeBoot RunOnce Persistence for Safe Mode Encryption by RA World

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1547.001Registry Run Keys / Startup Folder
Priv Esc
- T1547.001Registry Run Keys / Startup Folder
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects registry additions creating a RunOnce entry under the SafeBoot key, a technique the RA World ransomware group uses to force execution after rebooting the host into safe mode where security tooling is inactive. Encrypting in safe mode evades endpoint defenses that do not load there. Detecting this configuration exposes preparation for defense-evasive ransomware execution.

Reporting behind it

Related detections9 linkedT1547.001 — drag to rearrange

Malicious Microsoft Defender Real-Time Monitoring Disabled via Set-MpPreference (via process_creation)

Suspicious Windows Defender Exclusion Added via PowerShell via Process Creation (via process_creation)

Suspicious Internet Shortcut URL File Registered for Run Key Persistence (via registry_set)

Malicious Run Key Persistence Named SystemAgentService

Suspicious Run Key Persistence Pointing to ProgramData Executable (via registry_set)

Suspicious Run Key Persistence Pointing to WScript via PhantomVAI Loader (via registry_set)

Suspicious Run Key Persistence Named Updater

Suspicious Run Key Persistence Executing VBScript as WindowsSecurityCheck

Suspicious RunOnce Persistence Pointing to User AppData

Suspicious SafeBoot RunOnce Persistence for Safe Mode Encryption by RA World

Pivot detection · T1547.001 · 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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