CmdID / Rules / Windows

Potential Reconnaissance For Cached Credentials Via Cmdkey.EXE

A Sigma rule for process creation on Windows, by jmallette, Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems).

high 1 ATT&CK technique 1 program it names 1 everyday example trips it

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection_cli:
    CommandLine|contains|windash: ' -l'
  selection_img:
    - Image|endswith: '\cmdkey.exe'
    - OriginalFileName: 'cmdkey.exe'
  condition: all of selection*

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by jmallette, Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems), under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

everyday examples from tldr-pages, CC BY 4.0, each read by CmdID

List all user credentials on the page for cmdkey.exe

cmdkey /listIdentify

The commands LOLBAS or GTFOBins documents for cmdkey.exe trip it too: each is on its program’s page, read by CmdID.

Programs and files it names

their pages here

cmdkey.exe

ATT&CK

the techniques it is tagged with

T1003.005OS Credential Dumping: Cached Domain Credentials

Potential Reconnaissance For Cached Credentials Via Cmdkey.EXE

What it looks for

Command lines that trip it

Programs and files it names

ATT&CK

Other rules for T1003.005 OS Credential Dumping: Cached Domain Credentials