Firewall Configuration Discovery Via Netsh.EXE

Severity: low
Author: frack113, Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'
Source: upstream

Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1016` System Network Configuration Discovery

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

or:
Image|endswith: '\netsh.exe'
OriginalFileName: netsh.exe

Stage 2: `all of selection_cli`

or:
CommandLine|contains: 'config '
CommandLine|contains: 'name=all'
CommandLine|contains: 'rule '
CommandLine|contains: 'state '
CommandLine|contains: 'firewall '
CommandLine|contains: netsh
CommandLine|contains: 'show '

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
`CommandLine`	match	`config` corpus 2 (sigma 2) `firewall` corpus 2 (sigma 2) `name=all` `netsh` `rule` `show` `state`
`Image`	ends_with	`\netsh.exe` corpus 16 (sigma 16)
`OriginalFileName`	eq	`netsh.exe` corpus 14 (sigma 14)