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
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/06/2026, 01:53

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General

  • Target
    AsyncClient.exe
  • Size 46KB
  • Sample260625-ca3ypsgy2w
  • SHA256 2b14ef0f0d9ad037442b09dff0a660cc37d5eff653f70366597259dbcca40178
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 123b-jp.com:6606

  • 123b-jp.com:7707

  • 123b-jp.com:8808

  • 123b-jp.com:443

  • 123b-jp.com:80

  • 123b-jp.com:8844

  • 123b-jp.com:22

  • 123b-jp.com:53

  • hsu.cn.com:6606

  • hsu.cn.com:7707

  • hsu.cn.com:8808

  • hsu.cn.com:443

  • hsu.cn.com:80

  • hsu.cn.com:8844

  • hsu.cn.com:22

  • hsu.cn.com:53

  • lisavicky.com.tw:6606

  • lisavicky.com.tw:7707

  • lisavicky.com.tw:8808

  • lisavicky.com.tw:443

Mutex

  • FtTRmAL1FxCo

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
  • 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:5504

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/5504-0-0x00000000748B2000-0x00000000748B3000-memory.dmp
        Download

        memory/5504-1-0x00000000004B0000-0x00000000004C2000-memory.dmp
        Download

        memory/5504-2-0x00000000748A0000-0x000000007505C000-memory.dmp
        Download

        memory/5504-3-0x00000000748B2000-0x00000000748B3000-memory.dmp
        Download

        memory/5504-4-0x00000000748A0000-0x000000007505C000-memory.dmp
        Download