Overview

overview

8

Static

static

3

WindowsUpdate.exe

windows11-21h2-x64

8

WindowsUpdate.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    899s
  • max time network
    874s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/06/2026, 11:20

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General

  • Target
    WindowsUpdate.exe
  • Size 8.8MB
  • Sample260620-nfjb2aew3j
  • SHA256 e045994c0cd2dac50c620ada1ae794d5969b7a1b135e380c34ad0ba47edcb950
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 31 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 9 IoCs

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

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
    "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
          PID:6088
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "whoami"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5752
          • C:\Windows\system32\whoami.exe
            whoami
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2632
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "whoami"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:5904
          • C:\Windows\system32\whoami.exe
            whoami
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:5428
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "whoami"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:960
          • C:\Windows\system32\whoami.exe
            whoami
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4788
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:2824
      • C:\Windows\System32\SecurityHealthHost.exe
        \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
        1⤵
          PID:3916

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              81d243bd2c585b0f4821__mypyc.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\81d243bd2c585b0f4821__mypyc.cp310-win_amd64.pyd
              • Size 211KB
              • SHA256 5b80e8963c54771f2d923eb0469a7a293cabf172bdcff8ef2f28804948c4ec8c
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              VCRUNTIME140.dll
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\VCRUNTIME140.dll
              • Size 95KB
              • SHA256 9d2b40f0395cc5d1b4d5ea17b84970c29971d448c37104676db577586d4ad1b1
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _asyncio.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_asyncio.pyd
              • Size 63KB
              • SHA256 a9a99a2b847e46c0efce7fcfefd27f4bce58baf9207277c17bffd09ef4d274e5
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _bz2.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_bz2.pyd
              • Size 81KB
              • SHA256 62173a8fadd4bf4dd71ab89ea718754aa31620244372f0c5bbbae102e641a60e
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _ctypes.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_ctypes.pyd
              • Size 120KB
              • SHA256 1ea3dd3df393fa9b27bf6595be4ac859064cd8ef9908a12378a6021bba1cb177
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _decimal.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_decimal.pyd
              • Size 248KB
              • SHA256 9aac010a424c757c434c460c3c0a6515d7720966ab64bad667539282a17b4133
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _hashlib.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_hashlib.pyd
              • Size 63KB
              • SHA256 caa4d2f8795e9a55e128409cc016e2cc5c694cb026d7058fc561e4dd131ed1c9
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _lzma.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_lzma.pyd
              • Size 154KB
              • SHA256 60793c8592193cfbd00fd3e5263be4315d650ba4f9e4fda9c45a10642fd998be
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _multiprocessing.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_multiprocessing.pyd
              • Size 33KB
              • SHA256 7581edea33c1db0a49b8361e51e6291688601640e57d75909fb2007b2104fa4c
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _overlapped.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_overlapped.pyd
              • Size 48KB
              • SHA256 2ebbb0583259528a5178dd37439a64affcb1ab28cf323c6dc36a8c30362aa992
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _queue.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_queue.pyd
              • Size 30KB
              • SHA256 925f05255f4aae0997dc4ec94d900fd15950fd840685d5b8aa755427c7422b14
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _socket.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_socket.pyd
              • Size 77KB
              • SHA256 e6deb751039cd5424a139708475ce83f9c042d43e650765a716cb4a924b07e4f
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _ssl.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_ssl.pyd
              • Size 156KB
              • SHA256 d2a7999e234e33828888ad455baa6ab101d90323579abc1095b8c42f0f723b6f
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _uuid.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\_uuid.pyd
              • Size 24KB
              • SHA256 990586f2a2ba00d48b59bdd03d3c223b8e9fb7d7fab6d414bac2833eb1241ca2
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _http_parser.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\aiohttp\_http_parser.cp310-win_amd64.pyd
              • Size 246KB
              • SHA256 de24c4e0feb441a3a4bca74f96ab6473d4083ecf8f1e4459cf34ce7b749337b0
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _http_writer.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\aiohttp\_http_writer.cp310-win_amd64.pyd
              • Size 44KB
              • SHA256 42a946ba2bd91c31066ed2c152fc11d136e3ef8cae53be0b41103216789bb49e
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              mask.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\aiohttp\_websocket\mask.cp310-win_amd64.pyd
              • Size 33KB
              • SHA256 d5707a13b7ed678b4bb923a8adaae87dcf3e7ebcf61ff5fbbc5b543295ac5028
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              reader_c.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\aiohttp\_websocket\reader_c.cp310-win_amd64.pyd
              • Size 138KB
              • SHA256 b673c2f01faca093efa87e8fabca459dc5791d196103a022131d134ed2ea2149
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              base_library.zip
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\base_library.zip
              • Size 859KB
              • SHA256 1e557486c10f5834918cecab42425ff29e8068ed079e1d8dac0390de4ab6aab9
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              cd.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\charset_normalizer\cd.cp310-win_amd64.pyd
              • Size 10KB
              • SHA256 54ed1a662d7b02ac19d8227badf17a2d6924395474c1cce5a2314eacf4f544a0
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _frozenlist.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\frozenlist\_frozenlist.cp310-win_amd64.pyd
              • Size 66KB
              • SHA256 3df48e9b4341e6e4960b353d24c7ad8a010db1993879ac27fd68ce2e9486064d
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              libcrypto-1_1.dll
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\libcrypto-1_1.dll
              • Size 3.3MB
              • SHA256 9b7b4a0ad212095a8c2e35c71694d8a1764cd72a829e8e17c8afe3a55f147939
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              libffi-7.dll
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\libffi-7.dll
              • Size 32KB
              • SHA256 f60dd9f2fcbd495674dfc1555effb710eb081fc7d4cae5fa58c438ab50405081
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              libssl-1_1.dll
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\libssl-1_1.dll
              • Size 688KB
              • SHA256 d74ce01319ae6f54483a19375524aa39d9f5fd91f06cf7df238ca25e043130fd
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _multidict.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\multidict\_multidict.cp310-win_amd64.pyd
              • Size 77KB
              • SHA256 722e3bc918b47b78e0e560864bd870b51af33f7dfdf77b54f2a99b3c5009ed94
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _helpers_c.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\propcache\_helpers_c.cp310-win_amd64.pyd
              • Size 59KB
              • SHA256 088272923be8a13a8acdaa9848e7a1b730e4d26a2782f7d3fb73791bb0a87f09
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _psutil_windows.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\psutil\_psutil_windows.pyd
              • Size 69KB
              • SHA256 0035450801bd7d938e9e146c5ec28e619cb5a5f4a18cdc53ac7e9734c7f94f78
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              pyexpat.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\pyexpat.pyd
              • Size 194KB
              • SHA256 4a2d59993bce76790c6d923af81bf404f8e2cb73552e320113663b14cf78748c
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              python3.DLL
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\python3.DLL
              • Size 64KB
              • SHA256 dc909eb798a23ba8ee9f8e3f307d97755bc0d2dc0cb342cedae81fbbad32a8a9
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              python310.dll
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\python310.dll
              • Size 4.3MB
              • SHA256 14b06796f288bc6599e458fb23a944ab0c843e9868058f02a91d4606533505ed
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              select.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\select.pyd
              • Size 29KB
              • SHA256 db85f2f94d4994283e1055057372594538ae11020389d966e45607413851d9e9
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              unicodedata.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\unicodedata.pyd
              • Size 1.1MB
              • SHA256 1fb2d66c056f69e8bbdd8c6c910e72697874dae680264f8fb4b4df19af98aa2e
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              _quoting_c.cp310-win_amd64.pyd
              • Path C:\Users\Admin\AppData\Local\Temp\_MEI10442\yarl\_quoting_c.cp310-win_amd64.pyd
              • Size 79KB
              • SHA256 5be7a62498bd6aa1ce55e98354ecda798f5461f1a19f0d641c205835cfaabfe7
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download