Suspicious Service DLL Registration via regsvr32 Silent

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1543.003Windows Service
Priv Esc
- T1543.003Windows Service
Defense Evasion
- T1218.010Regsvr32
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects regsvr32.exe silently registering a DLL as part of the RONINGLOADER service installation chain that loads goldendays.dll. Adversaries use the silent flag to register malicious DLLs without user-visible prompts while establishing service-based persistence.

Reporting behind it

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Suspicious Service DLL Registration via regsvr32 Silent

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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