All Rules Have Been Deleted From The Windows Firewall Configuration

Severity: high
Author: frack113, Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects when a all the rules have been deleted from the Windows Defender Firewall configuration

MITRE ATT&CK coverage

Tactic	Techniques
Defense Evasion	`T1562.004` Impair Defenses: Disable or Modify System Firewall

Event coverage

Provider	Event ID	Title
Windows-Firewall-With-Advanced-Security	2033
Windows-Firewall-With-Advanced-Security	2059

Stages and Predicates

Stage 1: `selection`

Stage 2: `not 1 of filter_main_svchost`

ModifyingApplication|endswith: ':\Windows\System32\svchost.exe'

Stage 3: `not 1 of filter_optional_msmpeng`

ModifyingApplication|contains: ':\ProgramData\Microsoft\Windows Defender\Platform\'
ModifyingApplication|contains: '\MsMpEng.exe'

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.

Field	Kind	Values
`ModifyingApplication`	ends_with	`:\Windows\System32\svchost.exe`
`ModifyingApplication`	match	`:\ProgramData\Microsoft\Windows Defender\Platform\` `\MsMpEng.exe`