Suspicious DUser DLL Sideloading by credwiz 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 the Credential Wizard binary or its renamed variants loading DUser.dll from outside the System32 directory, the DLL side-loading technique Secret Blizzard used to launch its TwoDash and related backdoors. A signed host binary loading a same-named DLL from a non-system path is a hallmark of side-loading based execution.

Reporting behind it

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Suspicious DUser DLL Sideloading by credwiz 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.

Full detection rule

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