Analysis

  • max time kernel
    123s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 06:50

General

  • Target
    f3c1508784a8783d81099ed498d527c0.exe
  • Size 1.6MB
  • Sample260709-hmfa3aex3y
  • SHA256 f51361ec07e2cc4833c58d706b6da8d4d4982ce8dd60ac89a78ca56c9e553680
  • 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.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 NtSetInformationThreadHideFromDebugger 1 IoCs
  • 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
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 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\f3c1508784a8783d81099ed498d527c0.exe
    "C:\Users\Admin\AppData\Local\Temp\f3c1508784a8783d81099ed498d527c0.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Windows\SYSTEM32\schtasks.exe
      schtasks /create /tn "MicrosoftEdgeUpdateTaskCore" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthService.exe" /sc daily /st 00:01 /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:5248
  • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthService.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthService.exe
    1⤵
    • Executes dropped EXE
    PID:3052
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:472
    • 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 AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:5460
  • 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:3816
  • 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:2972

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

        SecurityHealthService.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthService.exe
        • Size 1.6MB
        • SHA256 f51361ec07e2cc4833c58d706b6da8d4d4982ce8dd60ac89a78ca56c9e553680
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2488-0-0x00007FFFC0EE0000-0x00007FFFC1143000-memory.dmp

        memory/2488-1-0x0000000410000000-0x000000041021A000-memory.dmp

        memory/2488-7-0x0000000410000000-0x000000041021A000-memory.dmp

        memory/2488-8-0x0000000410000000-0x000000041021A000-memory.dmp

        memory/2972-10-0x00000139001E0000-0x00000139002E0000-memory.dmp

        memory/2972-12-0x00000139001E0000-0x00000139002E0000-memory.dmp

        memory/2972-23-0x0000013903930000-0x0000013903950000-memory.dmp

        memory/2972-11-0x00000139001E0000-0x00000139002E0000-memory.dmp

        memory/2972-55-0x0000013914110000-0x0000013914130000-memory.dmp

        memory/2972-33-0x0000013903C70000-0x0000013903C90000-memory.dmp

        memory/2972-25-0x0000013913D90000-0x0000013913E90000-memory.dmp

        memory/3052-6-0x00007FFFC0EE0000-0x00007FFFC1143000-memory.dmp

        memory/5460-201-0x000000000E7C0000-0x000000000E86E000-memory.dmp