IE Change Domain Zone — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-01-22 / 2023-08-17.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 9a4b8ccf6a338192aa95900e4064203af25eff27cb37d6e67406b2d04f02b4af

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: IE Change Domain Zone
id: 45e112d0-7759-4c2a-aa36-9f8fb79d3393
related:
    - id: d88d0ab2-e696-4d40-a2ed-9790064e66b3
      type: derived
status: test
description: Hides the file extension through modification of the registry
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-4---add-domain-to-trusted-sites-zone
    - https://learn.microsoft.com/en-us/troubleshoot/developer/browsers/security-privacy/ie-security-zones-registry-entries
author: frack113
date: 2022-01-22
modified: 2023-08-17
tags:
    - attack.persistence
    - attack.t1137
logsource:
    category: registry_set
    product: windows
detection:
    selection_domains:
        TargetObject|contains: \SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\Domains\
    filter:
        Details:
            - DWORD (0x00000000) # My Computer
            - DWORD (0x00000001) # Local Intranet Zone
            - '(Empty)'
    condition: selection_domains and not filter
falsepositives:
    - Administrative scripts
level: medium
regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_change_security_zones/info.yml
simulation:
    - type: atomic-red-team
      name: Add Domain to Trusted Sites Zone
      technique: T1112
      atomic_guid: cf447677-5a4e-4937-a82c-e47d254afd57

Original YAML and metadata in JSON

False positives

• Administrative scripts

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-4---add-domain-to-trusted-sites-zone
• https://learn.microsoft.com/en-us/troubleshoot/developer/browsers/security-privacy/ie-security-zones-registry-entries