diff --git a/rules/windows/defense_evasion_via_filter_manager.toml b/rules/windows/defense_evasion_via_filter_manager.toml index 8abbc4148..19e1a789a 100644 --- a/rules/windows/defense_evasion_via_filter_manager.toml +++ b/rules/windows/defense_evasion_via_filter_manager.toml @@ -2,7 +2,7 @@ creation_date = "2020/02/18" integration = ["endpoint", "windows", "m365_defender", "system"] maturity = "production" -updated_date = "2025/02/21" +updated_date = "2025/02/24" min_stack_version = "8.14.0" min_stack_comments = "Breaking change at 8.14.0 for the Windows Integration." @@ -124,18 +124,14 @@ type = "eql" query = ''' process where host.os.type == "windows" and event.type == "start" and process.name : "fltMC.exe" and process.args : "unload" and - not - ( - ( - process.executable : "?:\\Program Files (x86)\\ManageEngine\\UEMS_Agent\\bin\\DCFAService64.exe" and - process.args : ("DFMFilter", "DRMFilter") - ) or - ( - process.executable : "?:\\Windows\\SysWOW64\\msiexec.exe" and - process.args : ("BrFilter_*", "BrCow_*") and - user.id : "S-1-5-18" - ) - ) + not process.parent.executable : + ("?:\\Program Files (x86)\\ManageEngine\\UEMS_Agent\\bin\\DCFAService64.exe", + "?:\\Windows\\SysWOW64\\msiexec.exe", + "?:\\Program Files\\Bitdefender\\Endpoint Security\\installer\\installer.exe", + "?:\\Program Files\\Bitdefender\\Endpoint Security\\EPSecurityService.exe", + "?:\\Program Files\\Bitdefender\\Bitdefender Security\\productcfg.exe", + "?:\\Program Files\\Bitdefender\\Bitdefender Security\\bdservicehost.exe", + "?:\\Program Files\\Bitdefender\\EndpointSetupInformation\\{*}\\Installer.exe") '''