IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Evasion via Filter Manager
editPotential Evasion via Filter Manager
editThe Filter Manager Control Program (fltMC.exe) binary may be abused by adversaries to unload a filter driver and evade defenses.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 9 (version history)
Added (Elastic Stack release): 7.6.0
Last modified (Elastic Stack release): 8.2.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type in ("start", "process_started") and process.name : "fltMC.exe" and process.args : "unload"
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
Rule version history
edit- Version 9 (8.2.0 release)
-
- Formatting only
- Version 8 (7.16.0 release)
-
- Formatting only
- Version 7 (7.13.0 release)
-
-
Updated query, changed from:
event.category:process and event.type:(start or process_started) and process.name:fltMC.exe
-
- Version 6 (7.12.0 release)
-
- Formatting only
- Version 5 (7.11.2 release)
-
- Formatting only
- Version 4 (7.10.0 release)
-
-
Updated query, changed from:
event.code:1 and process.name:fltMC.exe
-
- Version 3 (7.9.0 release)
-
- Formatting only
- Version 2 (7.7.0 release)
-
- Formatting only