Overview

overview

10

Static

static

3

d28b8c8854...a9.exe

windows10-2004-x64

10

d28b8c8854...a9.exe

windows11-ltsc_2024-x64

5

Fibrolitic.ps1

windows10-2004-x64

8

Fibrolitic.ps1

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/07/2026, 03:44

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General

  • Target
    Fibrolitic.ps1
  • Size 53KB
  • Sample260713-eamb3abx2j
  • SHA256 2a07a75f46c3581a3d4c8476ccd99d5bfc245068e8ccf8c63062c8ad454f2667
  • 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 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 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\Fibrolitic.ps1
    1⤵
    • Command and Scripting Interpreter: PowerShell
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2892
  • C:\Windows\system32\userinit.exe
    C:\Windows\system32\userinit.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:6040
    • 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:1972
  • 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:2724
  • 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:5696

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

        memory/2724-203-0x000001CCBA1F0000-0x000001CCBA624000-memory.dmp
        Download

        memory/2892-22-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-23-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-6-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-10-0x000001B437290000-0x000001B437342000-memory.dmp
        Download

        memory/2892-9-0x000001B437270000-0x000001B43728E000-memory.dmp
        Download

        memory/2892-11-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-12-0x000001B437350000-0x000001B43735A000-memory.dmp
        Download

        memory/2892-13-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-14-0x000001B4374D0000-0x000001B4374EE000-memory.dmp
        Download

        memory/2892-15-0x000001B4374B0000-0x000001B4374BA000-memory.dmp
        Download

        memory/2892-24-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-18-0x000001B4374F0000-0x000001B4374F6000-memory.dmp
        Download

        memory/2892-19-0x000001B437500000-0x000001B43750A000-memory.dmp
        Download

        memory/2892-17-0x000001B4374C0000-0x000001B4374C8000-memory.dmp
        Download

        memory/2892-20-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-21-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-5-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-0-0x00007FFCD4BFF000-0x00007FFCD4C00000-memory.dmp
        Download

        memory/2892-16-0x000001B437510000-0x000001B43752C000-memory.dmp
        Download

        memory/2892-26-0x000001B4374C0000-0x000001B4374E4000-memory.dmp
        Download

        memory/2892-25-0x000001B4374C0000-0x000001B4374EA000-memory.dmp
        Download

        memory/2892-27-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-28-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-29-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-30-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-31-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-4-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/2892-1-0x000001B41EC80000-0x000001B41ECA2000-memory.dmp
        Download

        memory/2892-202-0x00007FFCD4A70000-0x00007FFCD5414000-memory.dmp
        Download

        memory/5696-64-0x0000025802E10000-0x0000025802F10000-memory.dmp
        Download

        memory/5696-71-0x0000025802C10000-0x0000025802C30000-memory.dmp
        Download

        memory/5696-63-0x0000025802940000-0x0000025802960000-memory.dmp
        Download

        memory/5696-52-0x00000258001E0000-0x00000258002E0000-memory.dmp
        Download

        memory/5696-98-0x0000025814190000-0x00000258141B0000-memory.dmp
        Download