Overview

overview

10

Static

static

10

RtkAudUService64.exe

windows10-2004-x64

10

RtkAudUService64.exe

windows10-ltsc_2021-x64

10

RtkAudUService64.exe

windows11-21h2-x64

10

RtkAudUService64.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    17/07/2026, 03:20

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General

  • Target
    RtkAudUService64.exe
  • Size 3.1MB
  • Sample260717-dvrxlsat4k
  • SHA256 5df08ff9a4de8c024cce41d13a21eaf56bed82f827deeb00b2d4b546d5a63ddf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
fortnite pcsquasarspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Fortnite Pcs

C2

  • JamesBearden-53641.portmap.host:4782

  • JamesBearden-53641.portmap.host:53641

Mutex

  • f31d57c5-315c-4952-a613-e8990565c44b

Attributes
  • encryption_key

    2642F12F8A5328F2C727793C1BC395780006B27B

  • install_name

    RtkAudUService64.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Realtek HD Audio Universal Service

  • subdirectory

    C:\Windows\System32\DriverStore\FileRepository\realtekservice.inf_amd64_550508a90a3c9a47

Signatures

  • Family: Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RtkAudUService64.exe
    "C:\Users\Admin\AppData\Local\Temp\RtkAudUService64.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:560

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/560-0-0x0000000000420000-0x0000000000744000-memory.dmp
        Download

        memory/560-1-0x000000001B440000-0x000000001B450000-memory.dmp
        Download

        memory/560-2-0x000000001B440000-0x000000001B450000-memory.dmp
        Download