Sigma rule: IE ZoneMap Setting Downgraded To MyComputer Zone For HTTP Protocols

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f901f5fa2915, updated 2023-09-05T00:00:00.000Z.

Rule

Title
IE ZoneMap Setting Downgraded To MyComputer Zone For HTTP Protocols
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems), Michael Haag (idea)
Date
2023-09-05
File
rules/windows/registry/registry_set/registry_set_ie_security_zone_protocol_defaults_downgrade.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects changes to Internet Explorer's (IE / Windows Internet properties) ZoneMap configuration of the "HTTP" and "HTTPS" protocols to point to the "My Computer" zone. This allows downloaded files from the Internet to be granted the same level of trust as files stored locally.

Log source

product
windows
category
registry_set

Detection

selection:
    TargetObject|contains: '\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProtocolDefaults'
    TargetObject|endswith:
        - '\http'
        - '\https'
    Details|contains: 'DWORD (0x00000000)'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_ie_security_zone_protocol_defaults_downgrade.yml

Sources and licences

  • SigmaHQ

    "IE ZoneMap Setting Downgraded To MyComputer Zone For HTTP Protocols" by Nasreddine Bencherchali (Nextron Systems), Michael Haag (idea) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_ie_security_zone_protocol_defaults_downgrade.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: IE ZoneMap Setting Downgraded To MyComputer Zone For HTTP Protocols",
entity page, dataset version ref-f901f5fa2915, updated 2023-09-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/3fd4c8d7-8362-4557-a8e6-83b29cc0d724 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 3fd4c8d7-8362-4557-a8e6-83b29cc0d724, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.