Malicious regsvcs LOLBin Loading Ransomware DLL from UNC Path

ATT&CK techniques

Defense Evasion → Lateral Movement

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218System Binary Proxy Execution
Cred Access
Discovery
Lateral Movement
- T1570Lateral Tool Transfer
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the regsvcs.exe living-off-the-land binary being used to load and install a DLL from a UNC network path, matching SafePay ransomware deployment via regsvcs proxy execution. Attackers abuse regsvcs to run their encryptor DLL while bypassing application controls. Loading a DLL over UNC through regsvcs is not a legitimate developer workflow.

Reporting behind it

Related detections9 linkedT1218 — drag to rearrange

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Malicious regsvcs LOLBin Loading Ransomware DLL from UNC Path

Pivot detection · T1218 · 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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