Antivirus Filter Driver Disallowed On Dev Drive - Registry

Severity: high
Author: @kostastsale, Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects activity that indicates a user disabling the ability for Antivirus mini filter to inspect a "Dev Drive".

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1562.001` Impair Defenses: Disable or Modify Tools

Event coverage

Provider	Event ID	Title
Sysmon	13	RegistryEvent (Value Set)

Stages and Predicates

Stage 1: `selection`

Details: 'DWORD (0x00000000)'
TargetObject|endswith: '\FilterManager\FltmgrDevDriveAllowAntivirusFilter'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.