Suspicious regcap Side-Load of lregdll via Image Load

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 regcap.exe loading lregdll.dll, a DLL side-loading pair PlushDaemon uses to run the SlowStepper backdoor under a legitimate signed host binary. The lregdll.dll name is not a genuine dependency of regcap and is planted alongside it. This indicates DLL side-loading in a supply-chain espionage intrusion.

Reporting behind it

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Suspicious regcap Side-Load of lregdll via Image Load

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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