.. /fltMC.exe

Star

Paths:

• C:\Windows\System32\fltMC.exe

Resources:

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

Acknowledgements:

• Carlos Perez (@Carlos_Perez)

Detections:

• Sigma: proc_creation_win_fltmc_unload_driver_sysmon.yml
• Elastic: defense_evasion_via_filter_manager.toml
• Splunk: unload_sysmon_filter_driver.yml
• IOC: 4688 events with fltMC.exe

Tamper

1. Unloads a driver used by security agents

   fltMC.exe unload SysmonDrv

   Use case

   Defense evasion

   Privileges required

   Admin

   Operating systems

   Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11

   ATT&CK® technique

   T1562.001: Disable or Modify Tools