Sigma rule: FileFix - Command Evidence in TypedPaths

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3be1b9b8a3b5, updated 2025-11-19T00:00:00.000Z.

Rule

Title
FileFix - Command Evidence in TypedPaths
Status
experimental
Level
high
Author
Alfie Champion (delivr.to), Swachchhanda Shrawan Poudel (Nextron Systems)
Date
2025-07-05
Modified
2025-11-19
File
rules/windows/registry/registry_set/registry_set_filefix_typedpath_commands.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects commonly-used chained commands and strings in the most recent 'url' value of the 'TypedPaths' key, which could be indicative of a user being targeted by the FileFix technique.

Log source

product
windows
category
registry_set

Detection

selection_base:
    TargetObject|endswith: '\Software\Microsoft\Windows\CurrentVersion\Explorer\TypedPaths\url1'
    Details|contains|all:
        - '#'
        - 'http'
selection_cmd:
    - Details|contains:
          # Add more suspicious keywords
          - 'account'
          - 'anti-bot'
          - 'botcheck'
          - 'captcha'
          - 'challenge'
          - 'confirmation'
          - 'fraud'
          - 'human'
          - 'identification'
          - 'identificator'
          - 'identity'
          - 'robot'
          - 'validation'
          - 'verification'
          - 'verify'
    - Details|contains:
          - '%comspec%'
          - 'bitsadmin'
          - 'certutil'
          - 'cmd'
          - 'cscript'
          - 'curl'
          - 'finger'
          - 'mshta'
          - 'powershell'
          - 'pwsh'
          - 'regsvr32'
          - 'rundll32'
          - 'schtasks'
          - 'wget'
          - 'wscript'
condition: all of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution
  • attack.t1204.004

MITRE ATT&CK ids this rule names

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_filefix_typedpath_commands.yml

Sources and licences

  • SigmaHQ

    "FileFix - Command Evidence in TypedPaths" by Alfie Champion (delivr.to), Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_filefix_typedpath_commands.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: FileFix - Command Evidence in TypedPaths",
entity page, dataset version ref-3be1b9b8a3b5, updated 2025-11-19T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/4fee3d51-8069-4a4c-a0f7-924fcaff2c70 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 4fee3d51-8069-4a4c-a0f7-924fcaff2c70, 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.