Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-2004-x64

10

AsyncClient.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/07/2026, 09:29

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260703-lf8ktaev91
  • SHA256 76bdce033e64780b6165eca728d0b170b322e9a7af10d9d165966d0cfb57f1e0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
burggraven.nldiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • burggraven.nl

C2

  • fun88mb5.com:8443

  • fun88mb5.com:81

  • fun88mb5.com:7878

  • fun88mb5.com:8787

  • fun88mb5.com:6789

  • fun88mb5.com:80

  • fun88mb5.com:443

  • fun88mb5.com:2525

  • fun88mb5.com:7777

  • fun88mb5.com:8181

  • fun88mb5.com:8080

  • fun88mb5.com:995

  • fun88mb5.com:465

  • fun88mb5.com:587

  • fun88mb5.com:25

  • fun88mb5.com:21

  • fun88mb5.com:53

  • fun88mb5.com:2929

  • fun88mb5.com:4567

  • fun88mb5.com:5678

Mutex

  • 9oBhywbhGLDV

Attributes
  • delay

    3

  • install

    false

  • install_file

    winrar.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4240

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4240-0-0x0000000074692000-0x0000000074693000-memory.dmp
        Download

        memory/4240-1-0x0000000000AD0000-0x0000000000AE2000-memory.dmp
        Download

        memory/4240-2-0x0000000074680000-0x0000000074E3C000-memory.dmp
        Download

        memory/4240-3-0x0000000074692000-0x0000000074693000-memory.dmp
        Download

        memory/4240-4-0x0000000074680000-0x0000000074E3C000-memory.dmp
        Download