Uncommon Kimsuky OneNote Document Spawning Script Interpreter (via process_creation)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.005Visual Basic
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects Microsoft OneNote launching a scripting or shell interpreter such as wscript, cscript, mshta, cmd or powershell, the execution behavior seen when Kimsuky embeds rows of VBS files inside a .ONE document disguised with a Hangul document icon. OneNote spawning an interpreter is abnormal for legitimate note-taking and is a reliable indicator of embedded-object abuse for initial execution.

Reporting behind it

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Uncommon Kimsuky OneNote Document Spawning Script Interpreter (via process_creation)

Pivot detection · T1059.005 · 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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