Overview

overview

7

Static

static

3

jester.exe

windows10-2004-x64

7

jester.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    17/08/2026, 15:32

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General

  • Target
    jester.exe
  • Size 19.0MB
  • Sample260817-sy2njstygs
  • SHA256 73a396f575939babb27e851aa006929f0ea848c6a97142b27ec50077832ba0fa
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 17 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jester.exe
    "C:\Users\Admin\AppData\Local\Temp\jester.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5512
    • C:\Users\Admin\AppData\Local\Temp\jester.exe
      "C:\Users\Admin\AppData\Local\Temp\jester.exe"
      2⤵
      • Loads dropped DLL
      PID:1348

Network

        MITRE ATT&CK Matrix

        Replay Monitor

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        Downloads

        _raw_aes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\Crypto\Cipher\_raw_aes.pyd
        • Size 34KB
        • SHA256 520b343e44b5633bbc4fdcecc705a7f2eb6e55d082a1f3e4723ada9d7e5ea97d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _raw_aesni.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\Crypto\Cipher\_raw_aesni.pyd
        • Size 15KB
        • SHA256 3818873f50418cbecde58150e9bffff7372d2c2067fc0b96ffac9482dfddd603
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _cpuid_c.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\Crypto\Util\_cpuid_c.pyd
        • Size 10KB
        • SHA256 2af984819d9b1f95132520901b355eb85aa24d5efc6fc5ae9e77252ed03b7f4b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _imaging.cp314-win_amd64.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\PIL\_imaging.cp314-win_amd64.pyd
        • Size 2.5MB
        • SHA256 d823c0e3b54035d08703bb427c553c956c2607b79395f2952e17a5447c5f1105
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140_1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _bz2.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_bz2.pyd
        • Size 85KB
        • SHA256 d28c3dd1c22bfb8a6e8a6a9c2359842b797d08e878ecb7805f60e86a45589d11
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ctypes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_ctypes.pyd
        • Size 139KB
        • SHA256 25d9b0be550d428fecc697ca20450343a7c3ce77c9f5283e9aecfd188d609250
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _lzma.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_lzma.pyd
        • Size 157KB
        • SHA256 5f7003f9f0256e36351ca2810b3485db28579b08e4d1d65f6f211fcd1136f395
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cp1252.enc
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_tcl_data\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        _tkinter.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_tkinter.pyd
        • Size 67KB
        • SHA256 a49520e94f19d025a6be6ac7bbb73a7b32442838c62b68c162d44f81d92838ec
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _wmi.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_wmi.pyd
        • Size 39KB
        • SHA256 0ab1fbcf18c95d70343012feb1aad61e1ba95aaed5b4a08e57fc5990e8a9a452
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _zstd.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\_zstd.pyd
        • Size 491KB
        • SHA256 262aea62a994920daf152a10bdc0ca83a8b1c0874e71db23734862431de182c6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        base_library.zip
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\base_library.zip
        • Size 1.3MB
        • SHA256 5133788b63fc0527d505741adbad3d1673068007dbc9fe142cb8b010b2972d4d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libffi-8.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python314.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\python314.dll
        • Size 6.5MB
        • SHA256 fde89cdb5c2d08ae65de7ef4abca1876c93ba3796002f5ac0bf7e4d4f5a94da0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tcl86t.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\tcl86t.dll
        • Size 1.8MB
        • SHA256 224f7121c7d7b963f4767154dd185f62c49c442bf8916d6d4c1c567702ccc7fa
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        tk86t.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\tk86t.dll
        • Size 1.5MB
        • SHA256 39773640fc235b30d1b2a05f7b5eeba6fa9771e10f33f4ccc1649a9d99ff95e8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        zlib1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\_MEI55122\zlib1.dll
        • Size 144KB
        • SHA256 6e39f7a67e52aec08b2382ab03c4e20857139a86a55d24b3deeb4d63f7d02e47
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1348-1034-0x00007FFB16B60000-0x00007FFB16B89000-memory.dmp
        Download