Overview

overview

8

Static

static

3

0ec8881736...27.exe

windows10-2004-x64

8

0ec8881736...27.exe

windows11-ltsc_2024-x64

8

Caoutchouc.ps1

windows10-2004-x64

8

Caoutchouc.ps1

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    132s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/07/2026, 00:50

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General

  • Target
    Caoutchouc.ps1
  • Size 56KB
  • Sample260727-a69p1stdre
  • SHA256 144ca70bdfab8abe347591eb3e32f2c13e23eaf87a0a668f89c82c782a558609
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwareexecutionpersistenceransomwarespyware

Malware Config

Signatures

  • 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
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

    execution
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 57 IoCs
  • Suspicious use of SendNotifyMessage 39 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 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:\Windows\system32\WindowsPowerShell\v1.0\PowerShell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Caoutchouc.ps1
    1⤵
    • Command and Scripting Interpreter: PowerShell
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:5980
  • C:\Windows\system32\userinit.exe
    C:\Windows\system32\userinit.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4736
    • 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 Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:4540
  • 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:2104
  • 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:4104
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5532

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          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 603B
          • SHA256 b346273b0f3e13afaa9f07d97248343c45a667a5e097d1198a449a4de187aebb
          • 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 599B
          • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/4104-57-0x0000020D801E0000-0x0000020D802E0000-memory.dmp
          Download

          memory/4104-67-0x0000020D83A10000-0x0000020D83A30000-memory.dmp
          Download

          memory/4104-79-0x0000020D83D50000-0x0000020D83D70000-memory.dmp
          Download

          memory/4104-69-0x0000020D93E70000-0x0000020D93F70000-memory.dmp
          Download

          memory/4104-102-0x0000020D941F0000-0x0000020D94210000-memory.dmp
          Download

          memory/4104-56-0x0000020D801E0000-0x0000020D802E0000-memory.dmp
          Download

          memory/4540-222-0x000000000EE30000-0x000000000EEB0000-memory.dmp
          Download

          memory/4540-221-0x000000000EE30000-0x000000000EEB0000-memory.dmp
          Download

          memory/5980-22-0x00000262F90F0000-0x00000262F90FA000-memory.dmp
          Download

          memory/5980-29-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-16-0x00000262F90D0000-0x00000262F90EC000-memory.dmp
          Download

          memory/5980-17-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-18-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-19-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-20-0x00000262F9090000-0x00000262F9098000-memory.dmp
          Download

          memory/5980-23-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-24-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-25-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-0-0x00007FFB11F0F000-0x00007FFB11F10000-memory.dmp
          Download

          memory/5980-26-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-21-0x00000262F90A0000-0x00000262F90A6000-memory.dmp
          Download

          memory/5980-27-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-28-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-31-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-30-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-15-0x00000262F8F70000-0x00000262F8F7A000-memory.dmp
          Download

          memory/5980-33-0x00000262F90C0000-0x00000262F90E4000-memory.dmp
          Download

          memory/5980-32-0x00000262F90C0000-0x00000262F90EA000-memory.dmp
          Download

          memory/5980-34-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-14-0x00000262F90B0000-0x00000262F90CE000-memory.dmp
          Download

          memory/5980-13-0x00000262F8F60000-0x00000262F8F6A000-memory.dmp
          Download

          memory/5980-12-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-11-0x00000262F8FD0000-0x00000262F9082000-memory.dmp
          Download

          memory/5980-10-0x00000262F8FB0000-0x00000262F8FCE000-memory.dmp
          Download

          memory/5980-7-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-6-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-5-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-218-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-219-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download

          memory/5980-3-0x00000262F8F80000-0x00000262F8FA2000-memory.dmp
          Download

          memory/5980-4-0x00007FFB11D80000-0x00007FFB12724000-memory.dmp
          Download