Sigma rule: ClickOnce Trust Prompt Tampering

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-8857baa0016d, updated 2023-08-17T00:00:00.000Z.

Rule

Title
ClickOnce Trust Prompt Tampering
Status
test
Level
medium
Author
@SerkinValery, Nasreddine Bencherchali (Nextron Systems)
Date
2023-06-12
Modified
2023-08-17
File
rules/windows/registry/registry_set/registry_set_clickonce_trust_prompt.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects changes to the ClickOnce trust prompt registry key in order to enable an installation from different locations such as the Internet.

Log source

product
windows
category
registry_set

Detection

selection:
    TargetObject|contains: '\SOFTWARE\MICROSOFT\.NETFramework\Security\TrustManager\PromptingLevel\'
    TargetObject|endswith:
        - '\Internet'
        - '\LocalIntranet'
        - '\MyComputer'
        - '\TrustedSites'
        - '\UntrustedSites'
    Details: 'Enabled'
condition: selection

False positives (as the rule lists them)

  • Legitimate internal requirements.

Tags

  • attack.persistence
  • attack.defense-impairment
  • attack.t1112

MITRE ATT&CK ids this rule names

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_clickonce_trust_prompt.yml

Sources and licences

  • SigmaHQ

    "ClickOnce Trust Prompt Tampering" by @SerkinValery, Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_clickonce_trust_prompt.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: ClickOnce Trust Prompt Tampering",
entity page, dataset version ref-8857baa0016d, updated 2023-08-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/ac9159cc-c364-4304-8f0a-d63fc1a0aabb (accessed 2026-11-03).
Underlying source: SigmaHQ rule ac9159cc-c364-4304-8f0a-d63fc1a0aabb, 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.