Overview

overview

7

Static

static

3

RtkAudUpdater64.exe

windows10-ltsc_2021-x64

RtkAudUpdater64.exe

windows11-ltsc_2024-x64

Analysis

  • max time kernel
    25s
  • max time network
    39s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 22:19

Sharing

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Errors

Reason
Machine shutdown

General

  • Target
    RtkAudUpdater64.exe
  • Size 83.7MB
  • Sample260629-18vxrahx2k
  • SHA256 80364e04bae58a64ca475ed23eb2638982a7d3c284a79bc55530723ad890e7c2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Loads dropped DLL 64 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RtkAudUpdater64.exe
    "C:\Users\Admin\AppData\Local\Temp\RtkAudUpdater64.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Users\Admin\AppData\Local\Temp\RtkAudUpdater64.exe
      "C:\Users\Admin\AppData\Local\Temp\RtkAudUpdater64.exe"
      2⤵
      • Drops startup file
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4516

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        81d243bd2c585b0f4821__mypyc.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\81d243bd2c585b0f4821__mypyc.cp314-win_amd64.pyd
        • Size 211KB
        • SHA256 ab64835b63093c31975df2692756c8008e7ec190e4aa86f15a713bcc62e1d432
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140_1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _bz2.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_bz2.pyd
        • Size 85KB
        • SHA256 d28c3dd1c22bfb8a6e8a6a9c2359842b797d08e878ecb7805f60e86a45589d11
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ctypes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_ctypes.pyd
        • Size 139KB
        • SHA256 25d9b0be550d428fecc697ca20450343a7c3ce77c9f5283e9aecfd188d609250
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _hashlib.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_hashlib.pyd
        • Size 67KB
        • SHA256 36ce760b9fac53fe51755f30a68d86f5fde89bf1b66c65c19e04aa3afa404ac2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _lzma.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_lzma.pyd
        • Size 157KB
        • SHA256 5f7003f9f0256e36351ca2810b3485db28579b08e4d1d65f6f211fcd1136f395
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _queue.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_queue.pyd
        • Size 35KB
        • SHA256 bb53357b4e91ac23ed4061f15ff3e5e91a5b3be1cbb0c6cf294521ae5b4efa1c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _socket.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_socket.pyd
        • Size 85KB
        • SHA256 25ac83cac32ed0d67b2cc9672ce64cb53f0a29a75b14c276e901023ff43da5f9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ssl.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_ssl.pyd
        • Size 186KB
        • SHA256 5c07572df2913618cfb851b608cb5f74d740fcce5c3f2e63dc0a2ba39ab35dad
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _wmi.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_wmi.pyd
        • Size 39KB
        • SHA256 0ab1fbcf18c95d70343012feb1aad61e1ba95aaed5b4a08e57fc5990e8a9a452
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _zstd.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\_zstd.pyd
        • Size 491KB
        • SHA256 262aea62a994920daf152a10bdc0ca83a8b1c0874e71db23734862431de182c6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        base_library.zip
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\base_library.zip
        • Size 1.3MB
        • SHA256 f2263be87b43883fa3daf009159e6dc859f44bc590e93ad0f753ddd5a43f8bc1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cd.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\charset_normalizer\cd.cp314-win_amd64.pyd
        • Size 10KB
        • SHA256 da3ce780d6d58ae8c6920b99f806f64d58a1b33f4a01382861b01b50549199f8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libcrypto-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\libcrypto-3.dll
        • Size 6.0MB
        • SHA256 53c529145339fb042a3dcd3a09c2d7753204f8b4fc79d99e0d31e69a33985958
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libffi-8.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libssl-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\libssl-3.dll
        • Size 1.3MB
        • SHA256 b17a87979862d19241edc4318f967e24c3ec356ed6c2368f561179fab2311001
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        SDL2.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\SDL2.dll
        • Size 1.5MB
        • SHA256 b37740a72a7a9706216df9f0134894bb7a850b356fd149398c67d874cbcfacb4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        base.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\base.cp314-win_amd64.pyd
        • Size 30KB
        • SHA256 dbeba2308ca3aee498c57fffccca5dba546605953f13354a354c7132021410ac
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        bufferproxy.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\bufferproxy.cp314-win_amd64.pyd
        • Size 18KB
        • SHA256 d3a77c2dbc800f0ad9c028207832b17a8c0a43545bc0ef49e38ae1fcfc461292
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        color.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\color.cp314-win_amd64.pyd
        • Size 40KB
        • SHA256 a64a77862c91148bde0d937fd5a092a9533ded781941d509bc83bf702546942b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        constants.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\constants.cp314-win_amd64.pyd
        • Size 51KB
        • SHA256 1b73ae04df76b0bee2e849cb1b36bce67297eb3fb891fce19143a0641c7e3052
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        display.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\display.cp314-win_amd64.pyd
        • Size 48KB
        • SHA256 187bb838a5c8ea5f9a370185f890da4fb6488524c130fe5a05fbb6f74df5c037
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        math.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\math.cp314-win_amd64.pyd
        • Size 74KB
        • SHA256 f2cbf0841b100c0565a9fde6b7cd82c6a193a02a2e382b9595049e344c3f3b1b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rect.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\rect.cp314-win_amd64.pyd
        • Size 70KB
        • SHA256 a58bb13e91c7c0b16d204c2e7344323d283a3bf34d3bc1132f64fec061c6cd6f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        rwobject.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\rwobject.cp314-win_amd64.pyd
        • Size 18KB
        • SHA256 4a749f6de806c07c7af5a5de727f7ff0ef105b95cefaae9a33c47397eeab469a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        surface.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\pygame\surface.cp314-win_amd64.pyd
        • Size 238KB
        • SHA256 38898a715739a49b3a4d38a24a8b8888d26478493f7c2269b8a15a2f814fb995
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python3.DLL
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\python3.DLL
        • Size 72KB
        • SHA256 22c6e46d8bd563cdb072650901461ef68be2ea6cb1e80af859559d9395a27e39
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python314.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\python314.dll
        • Size 6.5MB
        • SHA256 fde89cdb5c2d08ae65de7ef4abca1876c93ba3796002f5ac0bf7e4d4f5a94da0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        select.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\select.pyd
        • Size 32KB
        • SHA256 fab1b4cee101359d82d72061b83cff1855337b3677b9fe01cd69f7548f4c496e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Lorem ipsum.txt
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\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\_MEI11402\ucrtbase.dll
        • Size 1.1MB
        • SHA256 c04daeba7e7c4b711d33993ab4c51a2e087f98f4211aea0dcb3a216656ba0ab7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        unicodedata.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI11402\unicodedata.pyd
        • Size 741KB
        • SHA256 0d4f124b2d6622d276d777f7106972219f9b310edb5df8149c253da7c013d6d8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download