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Potential Evasion via Filter Manager

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Potential Evasion via Filter Manager

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The 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.*
endgame-*

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
Elastic Endgame

Version: 102 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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process where event.type == "start" and process.name : "fltMC.exe"
and process.args : "unload"

Threat mapping

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Framework: MITRE ATT&CK^TM

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

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Version 102 (8.6.0 release)

Formatting only

Version 101 (8.5.0 release)

Updated query, changed from:

process where event.type in ("start", "process_started") and
process.name : "fltMC.exe" and process.args : "unload"

Version 11 (8.4.0 release)

Updated query, changed from:

process where event.type in ("start", "process_started") and
process.name : "fltMC.exe" and process.args : "unload"

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

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