Console CodePage Lookup Via CHCP

Severity: medium
Author: _pete_0, TheDFIRReport
Source: upstream

Detects use of chcp to look up the system locale value as part of host discovery

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1614.001` System Location Discovery: System Language Discovery

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|endswith: 'chcp  '
CommandLine|endswith: 'chcp '
CommandLine|endswith: chcp
or:
ParentCommandLine|contains: ' -c '
ParentCommandLine|contains: ' -k '
ParentCommandLine|contains: ' -r '
Image|endswith: '\chcp.com'
ParentImage|endswith: '\cmd.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.