Greedy File Deletion Using Del

testmedium
Log-Quelle: windows · process_creationAutor frack113 , X__Junior (Nextron Systems)Datum 2021-12-02
01

Beschreibung

Was dies ist, in Kürze.

Detects execution of the "del" builtin command to remove files using greedy/wildcard expression. This is often used by malware to delete content of folders that perhaps contains the initial malware infection or to delete evidence.

02

Tags

attack.stealthattack.t1070.004
03

Regelquelle (YAML)

title: Greedy File Deletion Using Del
id: 204b17ae-4007-471b-917b-b917b315c5db
status: test
description: Detects execution of the "del" builtin command to remove files using greedy/wildcard expression. This is often used by malware to delete content of folders that perhaps contains the initial malware infection or to delete evidence.
references:
    - https://www.joesandbox.com/analysis/509330/0/html#1044F3BDBE3BB6F734E357235F4D5898582D
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/erase
author: frack113 , X__Junior (Nextron Systems)
date: 2021-12-02
modified: 2023-09-11
tags:
    - attack.stealth
    - attack.t1070.004
logsource:
    category: process_creation
    product: windows
detection:
    # Example:
    #   del C:\ProgramData\*.dll & exit
    selection_img:
        - Image|endswith: '\cmd.exe'
        - OriginalFileName: 'Cmd.Exe'
    selection_del:
        CommandLine|contains:
            - 'del '
            - 'erase '
    selection_extensions:
        CommandLine|contains:
            - '\\\*.au3'
            - '\\\*.dll'
            - '\\\*.exe'
            - '\\\*.js'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
04

erkennt Techniken (1)

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

05

Referenzen

Externe Belege — Patches, Meldungen, Analysen.