Scripted Diagnostics Turn Off Check Enabled - Registry

Severity: medium
Author: Christopher Peacock @securepeacock, SCYTHE @scythe_io
Source: upstream

Detects enabling TurnOffCheck which can be used to bypass defense of MSDT Follina vulnerability

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 (0x00000001)'
TargetObject|endswith: '\Policies\Microsoft\Windows\ScriptedDiagnostics\TurnOffCheck'

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.