Overview

overview

10

Static

static

10

AsyncClient.exe

windows10-2004-x64

10

AsyncClient.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    11/05/2026, 00:40

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General

  • Target
    AsyncClient.exe
  • Size 45KB
  • Sample260511-a1ggaagy3x
  • SHA256 09804471e752d9e9fbe2baf057bc9a16219dfb8653ee88e01062b48557eeaf72
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdiscoveryasyncratrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • zeroswap.io:6606

  • zeroswap.io:7707

  • zeroswap.io:8808

  • zeroswap.io:443

  • zeroswap.io:80

  • zeroswap.io:22

  • zeroswap.io:53

  • pixelio.io:6606

  • pixelio.io:7707

  • pixelio.io:8808

  • pixelio.io:443

  • pixelio.io:80

  • pixelio.io:22

  • pixelio.io:53

  • finui.io:6606

  • finui.io:7707

  • finui.io:8808

  • finui.io:443

  • finui.io:80

  • finui.io:22

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
  • 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:4456

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        memory/4456-0-0x0000000000D80000-0x0000000000D92000-memory.dmp
        Download

        memory/4456-1-0x0000000005810000-0x0000000005820000-memory.dmp
        Download

        memory/4456-2-0x00000000056B0000-0x0000000005746000-memory.dmp
        Download

        memory/4456-3-0x0000000005810000-0x0000000005820000-memory.dmp
        Download