Overview

overview

7

Static

static

3

WindowsSec...te.exe

windows10-2004-x64

7

WindowsSec...te.exe

windows10-ltsc_2021-x64

7

WindowsSec...te.exe

windows11-21h2-x64

7

WindowsSec...te.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 04:22

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General

  • Target
    WindowsSecurityUpdate.exe
  • Size 20.4MB
  • Sample261102-ezheeag16p
  • SHA256 b2554e082276071647b40d6aa202a8917540836258897f5fde0b999b01ddacb0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
discoveryexecutionpersistence

Malware Config

Signatures

  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Executes a command shell one-liner 1 TTPs 3 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

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

    discovery
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

    persistenceexecution
  • Suspicious use of WriteProcessMemory 9 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:4408
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2848
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2240
  • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:6032
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:860
  • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
    C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1516
    • C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
      C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:5568
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4748
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "WindowsSecurityHost" /tr ""C:\Users\Admin\AppData\Local\Temp\WindowsSecurityUpdate.exe"" /sc onlogon /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4788

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        _imaging.cp315-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\PIL\_imaging.cp315-win_amd64.pyd
        • Size 2.5MB
        • SHA256 c01521704ce6cb263f4dfe468c5d3971ad8529582f0b49504384b86558232d37
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\VCRUNTIME140.dll
        • Size 174KB
        • SHA256 d1f4225df2cd877dbf130d5668a021dce3f94118455ff5ec952061c30afc9ce7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140_1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 a7146c08f89fe5b04541ab507cdb59ff7b44534d4ba3c668a426c6450a03434e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _asyncio.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_asyncio.pyd
        • Size 76KB
        • SHA256 823d73d89b646eecbd0b44fa07715bec8ba6ee1deff25b554eabac21b421ae4e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _bz2.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_bz2.pyd
        • Size 84KB
        • SHA256 a57ad7b6355659277ab3048ecb8878b713305cf7a566cebed90319d333d44941
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ctypes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_ctypes.pyd
        • Size 140KB
        • SHA256 0dab147f138b1c2294727c0c411b1313f798a9d0bf12b827b3c243c4fea628d1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _hashlib.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_hashlib.pyd
        • Size 71KB
        • SHA256 1aed3affa3bf88fb4ed1c1294fd23a4dae4c0c2378e139ae2d19b5f68ebac022
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _lzma.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_lzma.pyd
        • Size 167KB
        • SHA256 a3163ce72075f46e8d4f2e84c7bd6c30b354cfc9af77145ecd8f07cd758b07a8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _overlapped.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_overlapped.pyd
        • Size 56KB
        • SHA256 060b4a531d8cc8ca88ee1aaa1b7b14df1812c63573dd863acfc28e248a07b252
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _queue.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_queue.pyd
        • Size 35KB
        • SHA256 ebce600509f8fcc45ca264775b70d1a7848300b1669eff6babab5a1244195d3f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _socket.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_socket.pyd
        • Size 86KB
        • SHA256 95d9fec06c9dc9c61ce3335bd83160851bce90f936615a9ba564ecedd3e76e7c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ssl.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_ssl.pyd
        • Size 194KB
        • SHA256 3941ff2e737757468b5d5c4c4c3a848019ce0e85a9ad32b8deb8d5cf5df93e56
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _uuid.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_uuid.pyd
        • Size 27KB
        • SHA256 8e2bdb3e095cad538540c4941cbce3f279b86c8d8d7cdb8b00f42567d01e8668
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _wmi.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_wmi.pyd
        • Size 38KB
        • SHA256 25643fe7a149c2d36f6a3b18638e3dac3a20a7a198e8b8215d37e30b28ab6244
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _zstd.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\_zstd.pyd
        • Size 494KB
        • SHA256 65f7f0b0f204ea3fd9ea53a3d6f54e2f7f802188ee1a1ba1b1cdf3674684993d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        base_library.zip
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\base_library.zip
        • Size 1.2MB
        • SHA256 7de5233567d6fd8ad31032cba1e8ae7db6eebb42162273b360bd9791922bbf5a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libcrypto-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\libcrypto-3.dll
        • Size 5.7MB
        • SHA256 75495fe0e079ab00d49be740d3c710a0b94e3f74f9648cb7cc9f768fc7f52319
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libffi-8.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libssl-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\libssl-3.dll
        • Size 1.2MB
        • SHA256 8957182a9c385bfd9f3f790921de2ddc614cf91f99edbed4e9e5446a46504e32
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\python3.dll
        • Size 74KB
        • SHA256 03538664aa98aea3732c8345f8229e9c5deb26532b3e652fa3d9f757b867e46c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python315.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\python315.dll
        • Size 7.5MB
        • SHA256 62507168f11f1a9bb6c6982322e0320477cf703a7382bdbe608a124a457126b1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python3t.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\python3t.dll
        • Size 74KB
        • SHA256 d996e71c3aea06e48c060c86ce2a8593862e44365220b89619ebe7cb865c49ea
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        select.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\select.pyd
        • Size 32KB
        • SHA256 641c4d2365d15ba1da857fd783b64ef67624077cc50ff3bd8566fe484b109342
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Lorem ipsum.txt
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
        • Size 1KB
        • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ucrtbase.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\ucrtbase.dll
        • Size 1.3MB
        • SHA256 2e5fb14b7bf8540278f3614a12f0226e56a7cc9e64b81cbd976c6fcf2f71cbfb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        speedups.cp315-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\websockets\speedups.cp315-win_amd64.pyd
        • Size 10KB
        • SHA256 bf68a5931c1d3197c7e00ea63035a05213167935aac45fe71b03aae623c2b7e1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        INSTALLER
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013582\werkzeug-3.1.9.dist-info\INSTALLER
        • Size 4B
        • SHA256 ceebae7b8927a3227e5303cf5e0f1f7b34bb542ad7250ac03fbcde36ec2f1508
        • MD5 SHA1 SHA512
        Submit Download