Enable Microsoft Dynamic Data Exchange — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-02-26 / 2023-08-17.

{
  "category": "registry_set",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: cedea1128f4599e08f5994d1d204e88ce42d911cf22e61007cd73b65092d4ea7

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Enable Microsoft Dynamic Data Exchange
id: 63647769-326d-4dde-a419-b925cc0caf42
status: test
description: Enable Dynamic Data Exchange protocol (DDE) in all supported editions of Microsoft Word or Excel.
references:
    - https://msrc.microsoft.com/update-guide/vulnerability/ADV170021
author: frack113
date: 2022-02-26
modified: 2023-08-17
tags:
    - attack.execution
    - attack.t1559.002
logsource:
    category: registry_set
    product: windows
detection:
    selection_word:
        TargetObject|endswith: '\Word\Security\AllowDDE'
        Details:
            - 'DWORD (0x00000001)'
            - 'DWORD (0x00000002)'
    selection_excel:
        TargetObject|endswith:
            - '\Excel\Security\DisableDDEServerLaunch'
            - '\Excel\Security\DisableDDEServerLookup'
        Details: 'DWORD (0x00000000)'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://msrc.microsoft.com/update-guide/vulnerability/ADV170021