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
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/06/2026, 05:16

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260623-fx9ljsax61
  • SHA256 b3f58b72b1fac5e01aa6a1755797d5c761656023a2a14d4bf8229ab651531de6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • fkpq.cn.com:6606

  • fkpq.cn.com:7707

  • fkpq.cn.com:8808

  • fkpq.cn.com:443

  • fkpq.cn.com:53

  • fkpq.cn.com:22

  • kittenopvangnoordholland.nl:6606

  • kittenopvangnoordholland.nl:7707

  • kittenopvangnoordholland.nl:8808

  • kittenopvangnoordholland.nl:443

  • kittenopvangnoordholland.nl:53

  • kittenopvangnoordholland.nl:22

  • andema.in:6606

  • andema.in:7707

  • andema.in:8808

  • andema.in:443

  • andema.in:53

  • andema.in:22

  • ibopecontact.com.co:6606

  • ibopecontact.com.co:7707

Mutex

  • OFWpGUWwQg4F

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:5940

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/5940-0-0x0000000074792000-0x0000000074793000-memory.dmp
        Download

        memory/5940-1-0x0000000000170000-0x0000000000182000-memory.dmp
        Download

        memory/5940-2-0x0000000074780000-0x0000000074F3C000-memory.dmp
        Download

        memory/5940-3-0x0000000074792000-0x0000000074793000-memory.dmp
        Download

        memory/5940-4-0x0000000074780000-0x0000000074F3C000-memory.dmp
        Download