Analysis

  • geolocation tags

    eueuropefrfrance
  • max time kernel
    899s
  • max time network
    552s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/10/2026, 19:37

General

  • Target
    Extreme Injector v3.exe
  • Size 1.9MB
  • Sample261027-yb7tyaed44
  • SHA256 b65f40618f584303ca0bcf9b5f88c233cc4237699c0c4bf40ba8facbe8195a46
  • MD5 SHA1 SHA512 SSDEEP TLSH

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.

  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 42 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.

  • Uses Volume Shadow Copy WMI provider

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

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe
    "C:\Users\Admin\AppData\Local\Temp\Extreme Injector v3.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    PID:4820
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1044
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4628
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        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 FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:5596
    • 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: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:1880
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:5124

      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 599B
            • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
            • MD5 SHA1 SHA512 TLSH

            memory/4656-75-0x000001C583D60000-0x000001C583D80000-memory.dmp

            memory/4656-68-0x000001C583E40000-0x000001C583F40000-memory.dmp

            memory/4656-106-0x000001C594280000-0x000001C5942A0000-memory.dmp

            memory/4656-67-0x000001C583A20000-0x000001C583A40000-memory.dmp

            memory/4656-61-0x000001C5801E0000-0x000001C5802E0000-memory.dmp

            memory/4820-23-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-26-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-9-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-10-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-11-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-12-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-13-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-14-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-15-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-16-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-17-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-18-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-19-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-20-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-21-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-22-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-0-0x00007FF866A6F000-0x00007FF866A70000-memory.dmp

            memory/4820-24-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-25-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-7-0x000000001F280000-0x000000001F2BC000-memory.dmp

            memory/4820-27-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-28-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-29-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-30-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-31-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-32-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-33-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-34-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-35-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-36-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-39-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-6-0x000000001BC90000-0x000000001BCA2000-memory.dmp

            memory/4820-5-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-4-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-3-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-2-0x00007FF8668E0000-0x00007FF867284000-memory.dmp

            memory/4820-1-0x0000000000DD0000-0x0000000000FB6000-memory.dmp

            memory/4820-220-0x00007FF8668E0000-0x00007FF867284000-memory.dmp