fltMC.exe

Unloads a driver used by security agents

Use Defense evasion

fltMC.exe unload SysmonDrv

Evidence

Upstream reference

Environment

Local host

Context

admin

Native

Tamper

MITRE

T1562.001

Detection

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_fltmc_unload_driver_sysmon.yml

Elastic: github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/defense_evasion_via_filter_manager.toml

Splunk: github.com/splunk/security_content/blob/18f63553a9dc1a34122fa123deae2b2f9b9ea391/detections/endpoint/unload_sysmon_filter_driver.yml

IOC: 4688 events with fltMC.exe

Refs

www.darkoperator.com/blog/2018/10/5/operating-offensively-against-sysmon

lolbas-project.github.io/lolbas/Binaries/fltMC/