Forfiles Command Execution

testmedium
Log-Quelle: windows · process_creationAutor Tim Rauch, Elastic, E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.communityDatum 2022-06-14
01

Beschreibung

Was dies ist, in Kürze.

Detects the execution of "forfiles" with the "/c" flag. While this is an expected behavior of the tool, it can be abused in order to proxy execution through it with any binary. Can be used to bypass application whitelisting.

02

Tags

attack.executionattack.t1059
03

Regelquelle (YAML)

title: Forfiles Command Execution
id: 9aa5106d-bce3-4b13-86df-3a20f1d5cf0b
related:
    - id: a85cf4e3-56ee-4e79-adeb-789f8fb209a8
      type: obsolete
    - id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02
      type: obsolete
status: test
description: |
    Detects the execution of "forfiles" with the "/c" flag.
    While this is an expected behavior of the tool, it can be abused in order to proxy execution through it with any binary.
    Can be used to bypass application whitelisting.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Forfiles/
    - https://pentestlab.blog/2020/07/06/indirect-command-execution/
author: Tim Rauch, Elastic, E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2022-06-14
modified: 2024-03-05
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\forfiles.exe'
        - OriginalFileName: 'forfiles.exe'
    selection_cli:
        CommandLine|contains|windash: ' -c '
    condition: all of selection_*
falsepositives:
    - Legitimate use via a batch script or by an administrator.
level: medium
04

erkennt Techniken (1)

ATT&CK-Techniken, die dies ermöglicht oder abbildet.

05

Referenzen

Externe Belege — Patches, Meldungen, Analysen.