Overview

overview

10

Static

static

10

4b767fac98...e6.exe

windows10-2004-x64

10

4b767fac98...e6.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 23:34

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General

  • Target
    4b767fac98191dd727620e5c8d6cceaa8a1e8b5d5a55055afb4b9624b4f48be6.exe
  • Size 426KB
  • Sample260702-3kt2nac16n
  • SHA256 4b767fac98191dd727620e5c8d6cceaa8a1e8b5d5a55055afb4b9624b4f48be6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
dclientdefense_evasionexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.0.7

Botnet

  • Dclient

C2

  • beber.mex.com:1604

  • beber.mex.com:4782

  • beber.mex.com:8080

  • beber.mex.com:88

  • beber.mex.com:44

  • beber.mex.com:80

  • beber.mex.com:4040

  • beber.mex.com:22

  • beber.mex.com:3389

  • beber.mex.com:443

  • beber.mex.com:25

  • beber.mex.com:587

  • beber.mex.com:465

  • beber.mex.com:1433

  • beber.mex.com:3306

  • beber.mex.com:5432

  • beber.mex.com:6379

  • beber.mex.com:27017

  • beber.mex.com:445

  • beber.mex.com:139

Mutex

  • uyderzefjevytbh

Attributes
  • delay

    1

  • install

    true

  • install_file

    Dclient.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b767fac98191dd727620e5c8d6cceaa8a1e8b5d5a55055afb4b9624b4f48be6.exe
    "C:\Users\Admin\AppData\Local\Temp\4b767fac98191dd727620e5c8d6cceaa8a1e8b5d5a55055afb4b9624b4f48be6.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5792
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Dclient" /tr '"C:\Users\Admin\AppData\Roaming\Dclient.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:6032
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Dclient" /tr '"C:\Users\Admin\AppData\Roaming\Dclient.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2092
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD32A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1132
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1604
      • C:\Users\Admin\AppData\Roaming\Dclient.exe
        "C:\Users\Admin\AppData\Roaming\Dclient.exe"
        3⤵
        • Executes dropped EXE
        PID:4912
  • C:\Users\Admin\AppData\Roaming\Dclient.exe
    "C:\Users\Admin\AppData\Roaming\Dclient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3752

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpD32A.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmpD32A.tmp.bat
        • Size 151B
        • SHA256 64f7be723ca410660d2b605b66c6ac15f4ab53c121ca57ed1cf4aff9f82a6a9c
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        Dclient.exe
        • Path C:\Users\Admin\AppData\Roaming\Dclient.exe
        • Size 426KB
        • SHA256 4b767fac98191dd727620e5c8d6cceaa8a1e8b5d5a55055afb4b9624b4f48be6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5792-1-0x00007FF9F88DF000-0x00007FF9F88E0000-memory.dmp
        Download

        memory/5792-0-0x00000000007C0000-0x0000000000830000-memory.dmp
        Download

        memory/5792-2-0x00007FF9F8750000-0x00007FF9F90F4000-memory.dmp
        Download

        memory/5792-3-0x00007FF9F8750000-0x00007FF9F90F4000-memory.dmp
        Download

        memory/5792-7-0x00007FF9F8750000-0x00007FF9F90F4000-memory.dmp
        Download