Sigma rule: Filter Driver Unloaded Via Fltmc.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-417ee43d3f8d, updated 2025-10-07T00:00:00.000Z.

Rule

Title
Filter Driver Unloaded Via Fltmc.EXE
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-02-13
Modified
2025-10-07
File
rules/windows/process_creation/proc_creation_win_fltmc_unload_driver.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detect filter driver unloading activity via fltmc.exe

Log source

product
windows
category
process_creation

Detection

selection_img:
    - Image|endswith: '\fltMC.exe'
    - OriginalFileName: 'fltMC.exe'
selection_cli:
    CommandLine|contains: 'unload'
filter_optional_avira:
    ParentImage|contains:
        - '\AppData\Local\Temp\'
        - ':\Windows\Temp\'
    ParentImage|endswith: '\endpoint-protection-installer-x64.tmp'
    CommandLine|endswith:
        - 'unload rtp_filesystem_filter'
        - 'unload rtp_filter'
filter_optional_manageengine:
    ParentImage: 'C:\Program Files (x86)\ManageEngine\uems_agent\bin\dcfaservice64.exe'
    CommandLine|endswith: 'unload DFMFilter'
condition: all of selection_* and not 1 of filter_optional_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • attack.defense-impairment
  • attack.t1070
  • attack.t1685
  • attack.t1685.001

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/process_creation/proc_creation_win_fltmc_unload_driver.yml

Sources and licences

  • SigmaHQ

    "Filter Driver Unloaded Via Fltmc.EXE" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_fltmc_unload_driver.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: Filter Driver Unloaded Via Fltmc.EXE",
entity page, dataset version ref-417ee43d3f8d, updated 2025-10-07T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/4931188c-178e-4ee7-a348-39e8a7a56821 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 4931188c-178e-4ee7-a348-39e8a7a56821, 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.