Detection rules › Sigma

Folder Removed From Exploit Guard ProtectedFolders List - Registry

Severity
high
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects the removal of folders from the "ProtectedFolders" list of of exploit guard. This could indicate an attacker trying to launch an encryption process or trying to manipulate data inside of the protected folder

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1562.001 Impair Defenses: Disable or Modify Tools

Event coverage

ProviderEvent IDTitle
Sysmon14RegistryEvent (Key and Value Rename)

Stages and Predicates

Stage 1: selection

EventType: DeleteValue
TargetObject|contains: 'SOFTWARE\Microsoft\Windows Defender\Windows Defender Exploit Guard\Controlled Folder Access\ProtectedFolders'

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.

FieldKindValues
EventTypeeq
  • DeleteValue corpus 5 (sigma 4, splunk 1)
TargetObjectmatch
  • SOFTWARE\Microsoft\Windows Defender\Windows Defender Exploit Guard\Controlled Folder Access\ProtectedFolders