Overview

overview

10

Static

static

10

System.exe

windows10-2004-x64

10

System.exe

windows11-ltsc_2024-x64

10

Analysis

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

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/08/2026, 17:55

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General

  • Target
    System.exe
  • Size 63KB
  • Sample260809-whtjsasgrb
  • SHA256 2bacc73b133acd79185f75edd32b60f24bb23d9ad08125ccc36cbd2d389ce2e4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
venom clientsdefense_evasionexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 5.0.5

Botnet

  • Venom Clients

C2

  • windows-services.linkpc.net:4449

Mutex

  • Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    true

  • install_file

    System.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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 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\System.exe
    "C:\Users\Admin\AppData\Local\Temp\System.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1080
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp942D.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:628
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2880
      • C:\Users\Admin\AppData\Roaming\System.exe
        "C:\Users\Admin\AppData\Roaming\System.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1620
  • C:\Users\Admin\AppData\Roaming\System.exe
    "C:\Users\Admin\AppData\Roaming\System.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1180

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        System.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System.exe.log
        • Size 425B
        • SHA256 b8f7e4ed81764db56b9c09050f68c5a26af78d8a5e2443e75e0e1aa7cd2ccd76
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tmp942D.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp942D.tmp.bat
        • Size 150B
        • SHA256 2b07033452a6bfc53aaa1b345246bc9fcbb924a2a2b21b6c2febe20d35f751c9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        System.exe
        • Path C:\Users\Admin\AppData\Roaming\System.exe
        • Size 63KB
        • SHA256 2bacc73b133acd79185f75edd32b60f24bb23d9ad08125ccc36cbd2d389ce2e4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2908-0-0x0000000000580000-0x0000000000596000-memory.dmp
        Download

        memory/2908-1-0x000000001B240000-0x000000001B250000-memory.dmp
        Download