Potential Reconnaissance For Cached Credentials Via Cmdkey.EXE

Severity: high
Author: jmallette, Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
Source: upstream

Detects usage of cmdkey to look for cached credentials on the system

MITRE ATT&CK coverage

Tactic	Techniques
Credential Access	`T1003.005` OS Credential Dumping: Cached Domain Credentials

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_img`

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

Stage 2: `all of selection_cli`

CommandLine|contains: ' -l'

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	`-l`
`Image`	ends_with	`\cmdkey.exe` corpus 3 (sigma 3)
`OriginalFileName`	eq	`cmdkey.exe` corpus 2 (sigma 2)