Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-2004-x64

10

AsyncClient.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/09/2026, 17:13

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260905-vrexbayfmd
  • SHA256 5a528ce49d373651e7be1d2f9dadd82466bde7adbcb07ea6c7e156be8d816ee7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • mu88.shadiar.co/vi-vn/:6606

  • mu88.shadiar.co/vi-vn/:7707

  • mu88.shadiar.co/vi-vn/:8808

  • mu88.shadiar.co/vi-vn/:443

  • mu88.shadiar.co/vi-vn/:80

  • mu88.shadiar.co/vi-vn/:8844

  • mu88.shadiar.co/vi-vn/:22

  • mu88.shadiar.co/vi-vn/:53

  • mu88.rudrabook.in:6606

  • mu88.rudrabook.in:7707

  • mu88.rudrabook.in:8808

  • mu88.rudrabook.in:443

  • mu88.rudrabook.in:80

  • mu88.rudrabook.in:8844

  • mu88.rudrabook.in:22

  • mu88.rudrabook.in:53

Mutex

  • 4UWs9OPJ8vyg

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

    ratasyncrat
  • Unexpected DNS network traffic destination 2 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
    • Unexpected DNS network traffic destination
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4348

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4348-0-0x00000000742D2000-0x00000000742D3000-memory.dmp
        Download

        memory/4348-1-0x0000000000FC0000-0x0000000000FD2000-memory.dmp
        Download

        memory/4348-2-0x00000000742C0000-0x0000000074A7C000-memory.dmp
        Download

        memory/4348-3-0x00000000742D2000-0x00000000742D3000-memory.dmp
        Download

        memory/4348-4-0x00000000742C0000-0x0000000074A7C000-memory.dmp
        Download