Suspicious rnpkeys Execution from AppData for DLL Side-Loading (via process_creation)

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1574.001DLL
Persistence
- T1574.001DLL
Priv Esc
- T1574.001DLL
Defense Evasion
- T1574.001DLL
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the legitimate RNP key utility rnpkeys.exe running from a user AppData Roaming path, where LummaC2 side-loads a malicious rnp.dll to gain execution. The signed binary is relocated into a fake application folder so its adjacent DLL is loaded instead of the genuine library. Execution of this developer tool from a user writable profile directory is highly abnormal.

Reporting behind it

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Suspicious rnpkeys Execution from AppData for DLL Side-Loading (via process_creation)

Pivot detection · T1574.001 · 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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