Suspicious More_eggs ie4uinit Copy to AppData Microsoft Folder

ATT&CK techniques

Defense Evasion

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

What it detects

This rule detects the signed ie4uinit binary being executed from a user AppData Microsoft folder rather than System32. More_eggs fake job applicant lures copy ie4uinit alongside an attacker written ieuinit inf to abuse its inf handling. Running the LOLBIN from the wrong path enables execution of attacker controlled directives under a trusted name.

Reporting behind it

Related detections9 linkedT1218 — drag to rearrange

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Malicious certutil Decodehex Payload Reconstruction by DarkGate

Malicious MSIX Package Execution via App Installer ms-appinstaller Protocol (via process_creation)

Malicious ViPNet Backdoor Loader via lumpdiag.exe Path Substitution

Suspicious BitLockerToGo Execution from Unusual Parent

Suspicious More_eggs ie4uinit Copy to AppData Microsoft Folder

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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