DarkGate - Autoit3.EXE File Creation By Uncommon Process

testmedium
Log-Quelle: windows · file_eventAutor Micah BabinskiDatum 2023-10-15
01

Beschreibung

Was dies ist, in Kürze.

Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe. This activity has been associated with DarkGate malware, which uses Autoit3.exe to execute shellcode that performs process injection and connects to the DarkGate command-and-control server. Curl, KeyScramblerLogon, and these other processes consitute non-standard and suspicious ways to retrieve the Autoit3 executable.

02

Tags

attack.command-and-controlattack.executionattack.t1105attack.t1059detection.emerging-threats
03

Regelquelle (YAML)

title: DarkGate - Autoit3.EXE File Creation By Uncommon Process
id: 1a433e1d-03d2-47a6-8063-ece992cf4e73
status: test
description: |
    Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe.
    This activity has been associated with DarkGate malware, which uses Autoit3.exe to execute shellcode that performs
    process injection and connects to the DarkGate command-and-control server. Curl, KeyScramblerLogon, and these other
    processes consitute non-standard and suspicious ways to retrieve the Autoit3 executable.
references:
    - https://github.security.telekom.com/2023/08/darkgate-loader.html
    - https://www.kroll.com/en/insights/publications/cyber/microsoft-teams-used-as-initial-access-for-darkgate-malware
    - https://github.com/pr0xylife/DarkGate/tree/main
author: Micah Babinski
date: 2023-10-15
tags:
    - attack.command-and-control
    - attack.execution
    - attack.t1105
    - attack.t1059
    - detection.emerging-threats
logsource:
    category: file_event
    product: windows
detection:
    selection:
        Image|endswith:
            - '\Autoit3.exe'
            - '\curl.exe'
            - '\ExtExport.exe'
            - '\KeyScramblerLogon.exe'
            - '\wmprph.exe'
        TargetFilename|endswith: '\Autoit3.exe'
    condition: selection
falsepositives:
    - Unknown
level: medium
04

erkennt Techniken (2)

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

05

Referenzen

Externe Belege — Patches, Meldungen, Analysen.