Compressed File Creation Via Tar.EXE

testlow
Log-Quelle: windows · process_creationAutor Nasreddine Bencherchali (Nextron Systems), AdmU3Datum 2023-12-19
01

Beschreibung

Was dies ist, in Kürze.

Detects execution of "tar.exe" in order to create a compressed file. Adversaries may abuse various utilities to compress or encrypt data before exfiltration.

02

Tags

attack.collectionattack.exfiltrationattack.t1560attack.t1560.001
03

Regelquelle (YAML)

title: Compressed File Creation Via Tar.EXE
id: 418a3163-3247-4b7b-9933-dcfcb7c52ea9
status: test
description: |
    Detects execution of "tar.exe" in order to create a compressed file.
    Adversaries may abuse various utilities to compress or encrypt data before exfiltration.
references:
    - https://unit42.paloaltonetworks.com/chromeloader-malware/
    - https://lolbas-project.github.io/lolbas/Binaries/Tar/
    - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/cicada-apt10-japan-espionage
author: Nasreddine Bencherchali (Nextron Systems), AdmU3
date: 2023-12-19
tags:
    - attack.collection
    - attack.exfiltration
    - attack.t1560
    - attack.t1560.001
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\tar.exe'
        - OriginalFileName: 'bsdtar'
    selection_create:
        CommandLine|contains:
            - '-c'
            - '-r'
            - '-u'
    condition: all of selection_*
falsepositives:
    - Likely
level: low
04

erkennt Techniken (2)

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

05

Referenzen

Externe Belege — Patches, Meldungen, Analysen.