Suspicious Executable Execution From AppData Roaming msgui via Process Creation

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1055Process Injection
Defense Evasion
- T1055Process Injection
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of msgui.exe from the roaming AppData directory. In attacks on industrial organizations this binary is dropped to %APPDATA% and used as an injector into msiexec.exe or svchost.exe, staging further malicious activity from a user-writable location.

Reporting behind it

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Suspicious Executable Execution From AppData Roaming msgui via Process Creation

Pivot detection · T1055 · 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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