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Potential Password Spraying Attempt Using Dsacls.EXE

Detects possible password spraying attempts using Dsacls

MITRE ATT&CK

defense-evasion

Detection Query

selection_img:
  - Image|endswith: \dsacls.exe
  - OriginalFileName: DSACLS.EXE
selection_cli:
  CommandLine|contains|all:
    - "/user:"
    - "/passwd:"
condition: all of selection*

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2022-06-20

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.t1218

Raw Content

title: Potential Password Spraying Attempt Using Dsacls.EXE
id: bac9fb54-2da7-44e9-988f-11e9a5edbc0c
status: test
description: Detects possible password spraying attempts using Dsacls
references:
    - https://www.ired.team/offensive-security-experiments/active-directory-kerberos-abuse/using-dsacls-to-check-ad-object-permissions#password-spraying-anyone
    - https://ss64.com/nt/dsacls.html
    - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc771151(v=ws.11)
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-06-20
modified: 2023-02-04
tags:
    - attack.defense-evasion
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\dsacls.exe'
        - OriginalFileName: "DSACLS.EXE"
    selection_cli:
        CommandLine|contains|all:
            - '/user:'
            - '/passwd:'
    condition: all of selection*
falsepositives:
    - Legitimate use of dsacls to bind to an LDAP session
level: medium