Suspicious Regsvr32 Execution of SafePay Loader DLL

ATT&CK techniques

Defense Evasion

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

What it detects

This rule detects regsvr32.exe being used to execute the soc.dll loader observed in SafePay ransomware intrusions, a signed-binary-proxy technique to run malicious code while evading application controls. Regsvr32 loading a payload DLL named soc.dll is a strong indicator of the SafePay staging chain.

Reporting behind it

Related detections9 linkedT1218.010 — drag to rearrange

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Malicious Xctdoor XcLoader Execution via Regsvr32 AppX Path Abuse (via process_creation)

Malicious Office Application Loading a User-Path DLL via Regsvr32 or Rundll32 (via process_creation)

Suspicious Regsvr32 Execution of SafePay Loader DLL

Pivot detection · T1218.010 · 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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