LoFP LoFP / false positives should be very low with the extensions list cited. especially if you don't heavily utilize onenote.

Techniques

Sample rules

Suspicious File Created Via OneNote Application

Description

Detects suspicious files created via the OneNote application. This could indicate a potential malicious “.one”/".onepkg" file was executed as seen being used in malware activity in the wild

Detection logic

condition: selection
selection:
  Image|endswith:
  - \onenote.exe
  - \onenotem.exe
  - \onenoteim.exe
  TargetFilename|contains: \AppData\Local\Temp\OneNote\
  TargetFilename|endswith:
  - .bat
  - .chm
  - .cmd
  - .dll
  - .exe
  - .hta
  - .htm
  - .html
  - .js
  - .lnk
  - .ps1
  - .vbe
  - .vbs
  - .wsf