Periodic Backup For System Registry Hives Enabled

Severity: medium
Author: Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects the enabling of the "EnablePeriodicBackup" registry value. Once enabled, The OS will backup System registry hives on restarts to the "C:\Windows\System32\config\RegBack" folder. Windows creates a "RegIdleBackup" task to manage subsequent backups. Registry backup was a default behavior on Windows and was disabled as of "Windows 10, version 1803".

MITRE ATT&CK coverage

Tactic	Techniques
Collection	`T1113` Screen Capture

Event coverage

Provider	Event ID	Title
Sysmon	13	RegistryEvent (Value Set)

Stages and Predicates

Stage 1: `selection`

Details: 'DWORD (0x00000001)'
TargetObject|endswith: '\Control\Session Manager\Configuration Manager\EnablePeriodicBackup'

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.