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
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/07/2026, 04:29

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260723-e3748swtev
  • SHA256 104b9fb1f0899e1de91f204ec788877bcae22f52d7ad328eac36d8d19e24abcd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 123b123b.cc:6606

  • 123b123b.cc:7707

  • 123b123b.cc:8808

  • 123b123b.cc:443

  • 123b123b.cc:80

  • 123b123b.cc:8844

  • 123b123b.cc:22

  • 123b123b.cc:53

  • 123b1.org:6606

  • 123b1.org:7707

  • 123b1.org:8808

  • 123b1.org:443

  • 123b1.org:80

  • 123b1.org:8844

  • 123b1.org:22

  • 123b1.org:53

Mutex

  • 84kT3O6kMHgN

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

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
    PID:4284

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/4284-0-0x0000000000790000-0x00000000007A2000-memory.dmp
        Download

        memory/4284-1-0x0000000005290000-0x00000000052A0000-memory.dmp
        Download