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
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 10:43

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260810-mr79vs1zdv
  • SHA256 a62fc9b8df2abe3f8c8b9da94887016e098378e29642d444d4d2f46544cf8fa2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultcommand_and_controldiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • ee-88.uk.com:6606

  • ee-88.uk.com:7707

  • ee-88.uk.com:8808

  • ee-88.uk.com:443

  • ee-88.uk.com:80

  • ee-88.uk.com:8844

  • ee-88.uk.com:22

  • ee-88.uk.com: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
  • Outbound SSH connection to public host 2 TTPs 1 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

    command_and_control
  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
    1⤵
    • Outbound SSH connection to public host
    • Unexpected DNS network traffic destination
    • System Location Discovery: System Language Discovery
    PID:3332

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/3332-0-0x0000000074A92000-0x0000000074A93000-memory.dmp
        Download

        memory/3332-1-0x00000000006D0000-0x00000000006E2000-memory.dmp
        Download

        memory/3332-2-0x0000000074A80000-0x000000007523C000-memory.dmp
        Download

        memory/3332-3-0x0000000074A92000-0x0000000074A93000-memory.dmp
        Download

        memory/3332-4-0x0000000074A80000-0x000000007523C000-memory.dmp
        Download