Overview

overview

10

Static

static

3

loader.exe

windows10-2004-x64

10

loader.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    59s
  • max time network
    8s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 22:32

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General

  • Target
    loader.exe
  • Size 11.9MB
  • Sample260604-2f7xaagz2j
  • SHA256 7ad5e6f6f565ef6a1e271c658b2c16647153fd7b1da54b8cd35b126597d7579e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasionpersistence

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Loads dropped DLL 24 IoCs
  • Drops file in System32 directory 2 IoCs
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\loader.exe
    "C:\Users\Admin\AppData\Local\Temp\loader.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Users\Admin\AppData\Local\Temp\loader.exe
      C:\Users\Admin\AppData\Local\Temp\loader.exe
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "taskkill /f /im explorer.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2776
        • C:\Windows\system32\taskkill.exe
          taskkill /f /im explorer.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4864

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        _bz2.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_bz2.pyd
        • Size 82KB
        • SHA256 02d772c03704fe243c8de2672c210a5804d075c1f75e738d6130a173d08dfcde
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ctypes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_ctypes.pyd
        • Size 121KB
        • SHA256 bc3b83d2dc9e2f0e6386ed952384c6cf48f6eed51129a50dfd5ef6cbbc0a8fb3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _decimal.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_decimal.pyd
        • Size 247KB
        • SHA256 a28c543976aa4b6d37da6f94a280d72124b429f458d0d57b7dbcf71b4bea8f73
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _hashlib.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_hashlib.pyd
        • Size 63KB
        • SHA256 e47e76d70d508b62924fe480f30e615b12fdd7745c0aac68a2cddabd07b692ae
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _lzma.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_lzma.pyd
        • Size 155KB
        • SHA256 34130d8abe27586ee315262d69af4e27429b7eab1f3131ea375c2bb62cf094be
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _queue.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_queue.pyd
        • Size 31KB
        • SHA256 2ad02d49691a629f038f48fcdee46a07c4fcc2cb0620086e7b09ac11915ae6b7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _socket.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_socket.pyd
        • Size 81KB
        • SHA256 b38e66e6ee413e5955ef03d619cadd40fca8be035b43093d2342b6f3739e883e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ssl.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_ssl.pyd
        • Size 173KB
        • SHA256 a4ce52a9e0daddbbe7a539d1a7eda787494f2173ddcc92a3faf43b7cf597452b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _tkinter.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_tkinter.pyd
        • Size 62KB
        • SHA256 06ea475cbb786bd1db1c1bbd62546446e571f717303fcf868148e15612a04a65
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _uuid.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_uuid.pyd
        • Size 24KB
        • SHA256 bb418e91e543c998d11f9e65fd2a4899b09407ff386e059a88fe2a16aed2556b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _wmi.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\_wmi.pyd
        • Size 35KB
        • SHA256 79adca5037d9145309d3bd19f7a26f7bb7da716ee86e01073c6f2a9681e33dad
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libcrypto-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\libcrypto-3.dll
        • Size 4.9MB
        • SHA256 2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libffi-8.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libssl-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\libssl-3.dll
        • Size 771KB
        • SHA256 41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        loader.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\loader.dll
        • Size 19.1MB
        • SHA256 cca5bc5876704cde82f673359f5da59ae6c3bec2ac622208b2277c31342223fc
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python312.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\python312.dll
        • Size 6.6MB
        • SHA256 e7890e38256f04ee0b55ac5276bbf3ac61392c3a3ce150bb5497b709803e17ce
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        select.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\select.pyd
        • Size 30KB
        • SHA256 bc71fbdfd1441d62dd86d33ff41b35dc3cc34875f625d885c58c8dc000064dab
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _speedups.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\simplejson\_speedups.pyd
        • Size 45KB
        • SHA256 66e72d2344e428b472810b3cf0685560bfddfea2c6b078dc2118073986407a10
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tcl86t.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl86t.dll
        • Size 1.7MB
        • SHA256 28b61545d3a53460f41c20dacf0e0df2ba687a5c85f9ed5c34dbfc7ed2f23e3e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        msgcat-1.6.1.tm
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl8\8.5\msgcat-1.6.1.tm
        • Size 34KB
        • SHA256 6774519f179872ec5292523f2788b77b2b839e15665037e097a0d4edddd1c6fb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        auto.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\auto.tcl
        • Size 21KB
        • SHA256 517204ee436d08efc287abc97433c3bffcaf42ec6592a3009b9fd3b985ad772c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cp1252.enc
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        pkgIndex.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\http1.0\pkgIndex.tcl
        • Size 746B
        • SHA256 77265723959c092897c2449c5b7768ca72d0efcd8c505bddbb7a84f6aa401339
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        init.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\init.tcl
        • Size 25KB
        • SHA256 7a103a85413988456c2ad615c879bbcb4d91435bcfbbe23393e0eb52b56af6e2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pkgIndex.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\opt0.4\pkgIndex.tcl
        • Size 620B
        • SHA256 6a4abd2c519a745325c26fb23be7bbf95252d653a24806eb37fd4aa6a6479afe
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        package.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\package.tcl
        • Size 23KB
        • SHA256 f46ab61cdebe3aa45fa7e61a48930d64a0d0e7e94d04d6bf244f48c36cafe948
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tclIndex
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\tclIndex
        • Size 5KB
        • SHA256 ddf7e42def37888ad0a564aa4f8ca95f4eec942cebebfca851d35515104d5c89
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tm.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tcl\tm.tcl
        • Size 11KB
        • SHA256 4b7ed9fd2363d6876092db3f720cbddf97e72b86b519403539ba96e1c815ed8f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tk86t.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk86t.dll
        • Size 1.5MB
        • SHA256 23a195e1e3922215148e1e09a249b4fe017a73b3564af90b0f6fd4d9e5dda4da
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        button.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\button.tcl
        • Size 21KB
        • SHA256 1f5dd8d81b26f16e772e92fd2a22accb785004d0ed3447e54f87005d9c6a07a5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        entry.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\entry.tcl
        • Size 18KB
        • SHA256 65ba33a1e0b21e8e074780a51189cee6fd9926c85273e9e7633987fc212a17b2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        icons.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\icons.tcl
        • Size 10KB
        • SHA256 1264940e62b9a37967925418e9d0dc0befd369e8c181b9bab3d1607e3cc14b85
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        listbox.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\listbox.tcl
        • Size 14KB
        • SHA256 47c75f9f8348bf8f2c086c57b97b73741218100ca38d10b8abdf2051c95b9801
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        menu.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\menu.tcl
        • Size 38KB
        • SHA256 312af944a276cdbf1ee00757ef141595670984f7f13e19922c25643a040f5339
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        panedwindow.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\panedwindow.tcl
        • Size 5KB
        • SHA256 aa4f87e41ac8297f51150f2a9f787607690d01793456b93f0939c54d394731f9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pkgIndex.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\pkgIndex.tcl
        • Size 376B
        • SHA256 a5d208887a94832328c3a33928a80f3b46aa205c20db4f050a47d940e94071b4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tk.tcl
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\tk\tk.tcl
        • Size 23KB
        • SHA256 1d5e7518afc1382e36bf13fc5196c8a7cd93a4e9d24acf445522564245a489b0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        unicodedata.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\unicodedata.pyd
        • Size 1.1MB
        • SHA256 2480a78815f619a631210e577e733c9bafecb7f608042e979423c5850ee390ff
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vcruntime140.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\vcruntime140.dll
        • Size 106KB
        • SHA256 a8f950b4357ec12cfccddc9094cca56a3d5244b95e09ea6e9a746489f2d58736
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zlib1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_2636_220757_wm0nrichb-Y\zlib1.dll
        • Size 141KB
        • SHA256 c89c8a2fcf11d8191c7690027055431906aae827fc7f443f0908ad062e7e653e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/768-1018-0x00007FFAF40C0000-0x00007FFAF40EA000-memory.dmp
        Download

        memory/768-1016-0x00007FF766800000-0x00007FF76740B000-memory.dmp
        Download

        memory/768-1017-0x000001F4D34A0000-0x000001F4D4810000-memory.dmp
        Download

        memory/2636-1015-0x00007FF766800000-0x00007FF76740B000-memory.dmp
        Download