Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-2004-x64

10

AsyncClient.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/07/2026, 03:59

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260708-ej7dlaat5z
  • SHA256 9546a51f8b4c4fe70593dce0e9c67c9e772018d12d5d6f6b08dd47ac4292c014
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • happy-birthday-to-you.net/vi-vn/:6606

  • happy-birthday-to-you.net/vi-vn/:7707

  • happy-birthday-to-you.net/vi-vn/:8808

  • happy-birthday-to-you.net/vi-vn/:443

  • happy-birthday-to-you.net/vi-vn/:80

  • happy-birthday-to-you.net/vi-vn/:8844

  • happy-birthday-to-you.net/vi-vn/:22

  • happy-birthday-to-you.net/vi-vn/:53

  • carbay.com.co:6606

  • carbay.com.co:7707

  • carbay.com.co:8808

  • carbay.com.co:443

  • carbay.com.co:80

  • carbay.com.co:8844

  • carbay.com.co:22

  • carbay.com.co:53

Mutex

  • MA2poGKkAtqX

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 1 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:2088

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/2088-0-0x0000000000600000-0x0000000000612000-memory.dmp
        Download

        memory/2088-1-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
        Download

        memory/2088-2-0x0000000004FD0000-0x0000000004FE0000-memory.dmp
        Download