Sigma rule: HackTool - NoFilter Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-36dc88d5e7d1, updated 2024-01-05T00:00:00.000Z.

Rule

Title
HackTool - NoFilter Execution
Status
test
Level
high
Author
Stamatis Chatzimangou (st0pp3r)
Date
2024-01-05
File
rules/windows/builtin/security/win_security_hktl_nofilter.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of NoFilter, a tool for abusing the Windows Filtering Platform for privilege escalation via hardcoded policy name indicators

Log source

product
windows
service
security
definition
Requirements: Audit Filtering Platform Policy Change needs to be enabled

Detection

selection_5447:
    EventID: 5447
    FilterName|contains: 'RonPolicy'
selection_5449:
    EventID: 5449
    ProviderContextName|contains: 'RonPolicy'
condition: 1 of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.privilege-escalation
  • attack.stealth
  • attack.t1134
  • attack.t1134.001

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/builtin/security/win_security_hktl_nofilter.yml

Sources and licences

  • SigmaHQ

    "HackTool - NoFilter Execution" by Stamatis Chatzimangou (st0pp3r) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/security/win_security_hktl_nofilter.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: HackTool - NoFilter Execution",
entity page, dataset version ref-36dc88d5e7d1, updated 2024-01-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/7b14c76a-c602-4ae6-9717-eff868153fc0 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 7b14c76a-c602-4ae6-9717-eff868153fc0, 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.