New Generic Credentials Added Via Cmdkey.EXE

testmedium
log source: windows · process_creationauthor frack113, Nasreddine Bencherchali (Nextron Systems)date 2023-02-03
01

description

What this is, in brief.

Detects usage of "cmdkey.exe" to add generic credentials. As an example, this can be used before connecting to an RDP session via command line interface.

02

tags

attack.credential-accessattack.t1003.005
03

rule source (YAML)

title: New Generic Credentials Added Via Cmdkey.EXE
id: b1ec66c6-f4d1-4b5c-96dd-af28ccae7727
status: test
description: |
    Detects usage of "cmdkey.exe" to add generic credentials.
    As an example, this can be used before connecting to an RDP session via command line interface.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1021.001/T1021.001.md#t1021001---remote-desktop-protocol
author: frack113, Nasreddine Bencherchali (Nextron Systems)
date: 2023-02-03
modified: 2024-03-05
tags:
    - attack.credential-access
    - attack.t1003.005
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\cmdkey.exe'
        - OriginalFileName: 'cmdkey.exe'
    selection_cli_generic:
        CommandLine|contains|windash: ' -g' # Generic
    selection_cli_user:
        CommandLine|contains|windash: ' -u' # User
    selection_cli_password:
        CommandLine|contains|windash: ' -p' # Password
    condition: all of selection_*
falsepositives:
    - Legitimate usage for administration purposes
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_cmdkey_adding_generic_creds/info.yml
simulation:
    - type: atomic-red-team
      name: RDP to DomainController
      technique: T1021.001
      atomic_guid: 355d4632-8cb9-449d-91ce-b566d0253d3e
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.