Overview

overview

8

Static

static

3

WindowsUpdate.exe

windows10-2004-x64

7

WindowsUpdate.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    900s
  • max time network
    895s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    11/07/2026, 14:29

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    WindowsUpdate.exe
  • Size 18.7MB
  • Sample260711-rtj29set3v
  • SHA256 6b380ff151d0323a0db5825af8ae4ab18a5430483a748cf5488200b5cd884348
  • 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
  • Drops startup file 1 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Contacts third-party web service commonly abused for C2 1 TTPs 13 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.

  • 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 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 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\WindowsUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2736
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5736
  • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
    C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5848
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2268
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3448
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:5868
      • 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:3664
    • 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:3788
    • 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:2928
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:3848

      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

            VCRUNTIME140.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\VCRUNTIME140.dll
            • Size 117KB
            • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            VCRUNTIME140_1.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\VCRUNTIME140_1.dll
            • Size 48KB
            • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _asyncio.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_asyncio.pyd
            • Size 71KB
            • SHA256 675587b1155c875ab27e24302d53f38e41febd3c080bc190c3e4ffbdb51fe76b
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _brotli.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_brotli.cp313-win_amd64.pyd
            • Size 804KB
            • SHA256 67dfa82dcaed04ed3f358d84b18d1375d59126161de92e00164d36087b179d4d
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _bz2.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_bz2.pyd
            • Size 84KB
            • SHA256 b3dd7cea6d03342252834cebcc814af37d850b86d0627fa22b7f6990882f2f8b
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _ctypes.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_ctypes.pyd
            • Size 130KB
            • SHA256 dfa65498c77e71f038883337d2b5ffd92508489e79e6ee5e96ddec4ecf2a7fa1
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _hashlib.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_hashlib.pyd
            • Size 67KB
            • SHA256 1a3010b06c2fcd625dece3dd0883ca060e98b94adc062b06cb1a671cfc3b5caf
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _lzma.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_lzma.pyd
            • Size 155KB
            • SHA256 f20be6a9fee8fb5d53170c4bc24a39b48d3c0ccbe8e2000e60ff7d65b77c6ea1
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _overlapped.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_overlapped.pyd
            • Size 56KB
            • SHA256 626675dc9fc5c74beb72cd278322a8313b68b22161e34473f8b951c238e72185
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _socket.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_socket.pyd
            • Size 84KB
            • SHA256 127a39d2198f17dd9b573904fe7e4040c7c8718753e6c4edee2ff6c35f487fac
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _ssl.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_ssl.pyd
            • Size 177KB
            • SHA256 faf716d309349dbd54efd7fb402bd42ed21a537614ac0da89ed92ba307ecbf15
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _uuid.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_uuid.pyd
            • Size 27KB
            • SHA256 6748c182df6181cff8691da72dbb81f4f7f446ac7482d5dfe671f2b5333aed5d
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _wmi.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\_wmi.pyd
            • Size 38KB
            • SHA256 3be5e14e9a9dc49f099209dee98b9cb5e31ade3b0deab52277026bb14df5bdb6
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _http_parser.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\aiohttp\_http_parser.cp313-win_amd64.pyd
            • Size 243KB
            • SHA256 7887eb2b564ab4be8fdfe427e963eb0f57fd1f5cb4a7d44cf7a916e166c7cf66
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _http_writer.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\aiohttp\_http_writer.cp313-win_amd64.pyd
            • Size 45KB
            • SHA256 d0a67572078cd438ec81c95c4b83a5d0bc449a00829a9471953b323a720dbfcf
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            mask.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\aiohttp\_websocket\mask.cp313-win_amd64.pyd
            • Size 35KB
            • SHA256 4c0d339d53e9139bdde2aed60230ce8f12c85e0c9b0d80895d3628a056887254
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            reader_c.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\aiohttp\_websocket\reader_c.cp313-win_amd64.pyd
            • Size 143KB
            • SHA256 59c329569bbf27c53119f3065a72b1ea6ef3462f8bfface981cf9dd3fd1c08ad
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _audioop.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\audioop\_audioop.pyd
            • Size 48KB
            • SHA256 c9f875e7f6eb8ca8c9dddcf8f875e330f1b831b8ac042cfdb838fb2ae6cd40ef
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            base_library.zip
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\base_library.zip
            • Size 1.3MB
            • SHA256 7defcd030e9f67d91397a4cd65c420e6f8c005e96597dc87327d272715ff4c28
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _frozenlist.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\frozenlist\_frozenlist.cp313-win_amd64.pyd
            • Size 66KB
            • SHA256 06579b025cf431d0d1b5ba34ce585ef35a6ffc5016d53e221dc3020e067c047d
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            libcrypto-3.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\libcrypto-3.dll
            • Size 5.0MB
            • SHA256 ccfffddcd3defb8d899026298af9af43bc186130f8483d77e97c93233d5f27d7
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            libffi-8.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\libffi-8.dll
            • Size 38KB
            • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            libssl-3.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\libssl-3.dll
            • Size 776KB
            • SHA256 007142039f04d04e0ed607bda53de095e5bc6a8a10d26ecedde94ea7d2d7eefe
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _multidict.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\multidict\_multidict.cp313-win_amd64.pyd
            • Size 78KB
            • SHA256 04a6693ccc24d454c897c6e42608c121cb54f11df95a015589833e13f5de4da4
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _helpers_c.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\propcache\_helpers_c.cp313-win_amd64.pyd
            • Size 62KB
            • SHA256 431e731cac6e09e583fe262a9f0b9a31ce43860b1f4411e5cb9032f249d7420c
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _psutil_windows.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\psutil\_psutil_windows.pyd
            • Size 69KB
            • SHA256 0035450801bd7d938e9e146c5ec28e619cb5a5f4a18cdc53ac7e9734c7f94f78
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            python3.DLL
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\python3.DLL
            • Size 70KB
            • SHA256 4ae581aa4e65fef9f92c84c428c990892da538b4d9289592df51fa31fd879770
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            python313.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\python313.dll
            • Size 5.8MB
            • SHA256 41ec4fc4e5bc8b207258590238f7f050b13fdfee84c4a7b1ecff6e945d031a10
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            select.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\select.pyd
            • Size 32KB
            • SHA256 9cc1ef0264060099503592db57ee7d7c1f8d6bea689b2ed125919c7a30b7ab7f
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            ucrtbase.dll
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\ucrtbase.dll
            • Size 1.1MB
            • SHA256 c04daeba7e7c4b711d33993ab4c51a2e087f98f4211aea0dcb3a216656ba0ab7
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            unicodedata.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\unicodedata.pyd
            • Size 695KB
            • SHA256 1989628f16052f9123c5cf603e96490a75fde6228315457556f96a838bf9e904
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            _quoting_c.cp313-win_amd64.pyd
            • Path C:\Users\Admin\AppData\Local\Temp\_MEI27362\yarl\_quoting_c.cp313-win_amd64.pyd
            • Size 84KB
            • SHA256 622c862d21143e8e5272e9a861d4fcc8f3ff742a1b56cf9588dc5781c0533bd9
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/3664-410-0x000000000F630000-0x000000000FEAB000-memory.dmp
            Download

            memory/3664-440-0x000000000F630000-0x000000000FEAB000-memory.dmp
            Download

            memory/3788-267-0x00000294801E0000-0x00000294802E0000-memory.dmp
            Download

            memory/3788-274-0x0000029482A30000-0x0000029482A50000-memory.dmp
            Download

            memory/3788-282-0x0000029482C90000-0x0000029482CB0000-memory.dmp
            Download

            memory/3788-275-0x0000029482E70000-0x0000029482F70000-memory.dmp
            Download

            memory/3788-313-0x0000029494270000-0x0000029494290000-memory.dmp
            Download