Overview

overview

8

Static

static

3

blocker.exe

windows10-2004-x64

7

blocker.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    899s
  • max time network
    581s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/09/2026, 16:24

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General

  • Target
    blocker.exe
  • Size 7.1MB
  • Sample260913-twstasstdt
  • SHA256 f3e5c1db3bf6e7f9eaa431c25c3bc3b9aba2520689dbd93644aa436eea571669
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarepersistenceransomwarespyware

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
  • Loads dropped DLL 6 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 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.

    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\blocker.exe
    "C:\Users\Admin\AppData\Local\Temp\blocker.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Users\Admin\AppData\Local\Temp\blocker.exe
      "C:\Users\Admin\AppData\Local\Temp\blocker.exe"
      2⤵
      • Loads dropped DLL
      PID:4648
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:5340
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4196
      • 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:4256
    • 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:2452
    • 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:3920
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:2404

      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 607B
            • SHA256 b1f5ddf24eb5347ed1088b92a5a5126de014b4f3cda205f8612b62bb195390aa
            • 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

            VCRUNTIME140.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\VCRUNTIME140.dll
            • Size 174KB
            • SHA256 d1f4225df2cd877dbf130d5668a021dce3f94118455ff5ec952061c30afc9ce7
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _bz2.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\_bz2.pyd
            • Size 84KB
            • SHA256 261545bd24f15a783fc0c82568b766a4ab569dde14507a81701cccf5293e6e54
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _ctypes.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\_ctypes.pyd
            • Size 131KB
            • SHA256 9d6dccb4cd84a44a107f9b06b91c0a44e85766d9bf4debb6abbde8fda7494c2c
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _lzma.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\_lzma.pyd
            • Size 155KB
            • SHA256 ee224aacf5cf9c9974a1b842aac8d89d5d9b7eeebbf4d76619ae0ce4da8ecd96
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            base_library.zip
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\base_library.zip
            • Size 1.3MB
            • SHA256 fc7c832163f74bc6afc33d93a80ab324506cefc4275d2cab278dc8c22b5676dd
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            libffi-8.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\libffi-8.dll
            • Size 38KB
            • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            python313.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000abc2\python313.dll
            • Size 5.9MB
            • SHA256 e820bf024efd2b56bb2b82791e6b6ddc7303f070f8e72cba7637482a8a906238
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/2452-48-0x0000020D801E0000-0x0000020D802E0000-memory.dmp
            Download

            memory/2452-50-0x0000020D801E0000-0x0000020D802E0000-memory.dmp
            Download

            memory/2452-49-0x0000020D801E0000-0x0000020D802E0000-memory.dmp
            Download

            memory/2452-94-0x0000020D84290000-0x0000020D842B0000-memory.dmp
            Download

            memory/2452-60-0x0000020D83E70000-0x0000020D83F70000-memory.dmp
            Download

            memory/2452-67-0x0000020D83DF0000-0x0000020D83E10000-memory.dmp
            Download

            memory/2452-59-0x0000020D83C70000-0x0000020D83C90000-memory.dmp
            Download