Resubmissions

18/08/2026, 22:47

260818-2ql3katwes8

18/08/2026, 03:47

260818-eckagsvhmg8

Analysis

  • user interaction
    yes
  • max time kernel
    170s
  • max time network
    174s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/08/2026, 03:47

General

  • Target
    Dahlia v2.0.exe
  • Size 22.9MB
  • Sample260818-eckagsvhmg
  • SHA256 434e18412e9c3745ec3e2dd0cdf9d206b02624c1c103e62fca3b99d8645820ff
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Executes a command shell one-liner 1 TTPs 5 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of WriteProcessMemory 13 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Dahlia v2.0.exe
    "C:\Users\Admin\AppData\Local\Temp\Dahlia v2.0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5244
    • C:\Users\Admin\AppData\Local\Temp\Dahlia v2.0.exe
      "C:\Users\Admin\AppData\Local\Temp\Dahlia v2.0.exe"
      2⤵
      • Creates a file in the Startup directory
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:3952
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
        • Executes a command shell one-liner
        PID:4736
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c taskkill /F /IM "winsys.exe" /T > NUL 2>&1
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1876
        • C:\Windows\system32\taskkill.exe
          taskkill /F /IM "winsys.exe" /T
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2544
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -c "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\SystemCore'; Add-MpPreference -ExclusionExtension '.exe'"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2660
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "schtasks /create /tn "WindowsSystemCore" /tr "\"C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe\"" /sc onlogon /rl HIGHEST /f"
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4812
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "WindowsSystemCore" /tr "\"C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe\"" /sc onlogon /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3424
      • C:\Windows\SYSTEM32\wscript.exe
        wscript C:\Users\Admin\AppData\Local\Temp\vanish.vbs
        3⤵
        • Deletes itself
        • Executes a VBScript file via the Windows Script Host.
        PID:2896
      • C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
        C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:5980
        • C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
          C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:3052
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c "ver"
            5⤵
            • Executes a command shell one-liner
            PID:4628
  • C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
    "C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe
      "C:\Users\Admin\AppData\Roaming\SystemCore\winsys.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2236
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c "ver"
        3⤵
        • Executes a command shell one-liner
        PID:4116

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        euc-cn.enc

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI43282\_tcl_data\encoding\euc-cn.enc
        • Size 84KB
        • SHA256 1700af47dc012a48cec89cf1dfae6d1d0d2f40ed731eff6ca55296a055a11c00
        • MD5 SHA1 SHA512 SSDEEP TLSH

        81d243bd2c585b0f4821__mypyc.cp311-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\81d243bd2c585b0f4821__mypyc.cp311-win_amd64.pyd
        • Size 189KB
        • SHA256 9d2de25359dcfecaeacfb66cb9884972e56fbc143282eb71133c2419b2d3d0df
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _imaging.cp311-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\PIL\_imaging.cp311-win_amd64.pyd
        • Size 2.2MB
        • SHA256 7334f1a36c66ae8969ec0c47984a5485ded66b920185b3d00a48ab72d441e8e2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SDL2.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\SDL2.dll
        • Size 2.4MB
        • SHA256 2e4e823b46e95a29ad4ce4e7134417b0cd60145fefe606920ef6dc0ebcfb0021
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SDL2_image.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\SDL2_image.dll
        • Size 122KB
        • SHA256 1e364af75fee0c83506fbdfd4d5b0e386c4e9c6a33ddbddac61ddb131e360194
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SDL2_mixer.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\SDL2_mixer.dll
        • Size 285KB
        • SHA256 2a0fc5e9f72c2eaec3240cb82b7594a58ccda609485981f256b94d0a4dd8d6f8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SDL2_ttf.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\SDL2_ttf.dll
        • Size 1.5MB
        • SHA256 fcdfabdfce868eb33f7514025ff59c1bb6c418f1bcd6ace2300a9cd4053e1d63
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\VCRUNTIME140.dll
        • Size 116KB
        • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _asyncio.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_asyncio.pyd
        • Size 63KB
        • SHA256 55cbeaa0a6d5678b4ff611b5166829b1a07b84b97e72e35263216703d98332ef
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_bz2.pyd
        • Size 82KB
        • SHA256 ab34b804da5b8e814b2178754d095a4e8aead77eefd3668da188769392cdb5f4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_ctypes.pyd
        • Size 121KB
        • SHA256 b75560db79ba6fb56c393a4886eedd72e60df1e2f7f870fe2e356d08155f367b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_decimal.pyd
        • Size 247KB
        • SHA256 080d0fbbff68d17b670110c95210347be7b8ab7c385f956f123a66dc2f434ab3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_hashlib.pyd
        • Size 63KB
        • SHA256 30adfb86513282e59d7e27968e1ff6686e43b8559994a50c17be66d0789f82b3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_lzma.pyd
        • Size 155KB
        • SHA256 64ba475a28781dca81180a1b8722a81893704f8d8fac0b022c846fdcf95b15b9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _multiprocessing.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_multiprocessing.pyd
        • Size 33KB
        • SHA256 bc7dc19f52a0521f1a9998c47facc27917f560a739fbcf57e322290f7c6973af
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _overlapped.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_overlapped.pyd
        • Size 50KB
        • SHA256 9215dbd5b09ed064f6e57fca57e16880566bd30f93bbdb15f45fa07a779c2ed4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_queue.pyd
        • Size 31KB
        • SHA256 2bfd8459ba01c741d676f79ee96802fb2c29cb30f50301d67fde8bbce8e7e7d4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_socket.pyd
        • Size 77KB
        • SHA256 8956b11c07d08d289425e7240b8fa37841a27c435617dbbd02bfe3f9405f422b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_ssl.pyd
        • Size 172KB
        • SHA256 bca1f490c9f7ba25cbbb4b39785dda8aa651123e22d4e7edc299b218c8157a81
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cp1252.enc

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_tcl_data\encoding\cp1252.enc
        • Size 1KB
        • SHA256 741859cf238c3a63bbb20ec6ed51e46451372bb221cfff438297d261d0561c2e
        • MD5 SHA1 SHA512 TLSH

        _tkinter.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_tkinter.pyd
        • Size 62KB
        • SHA256 652645a21f6cdb07358b29b4535f8e978f445856aed995fbb9f741c871c62162
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _uuid.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\_uuid.pyd
        • Size 24KB
        • SHA256 51cb69267f77c094d687af5b80c560eaf325d0990304baf20242d477d8b156a1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\base_library.zip
        • Size 1.4MB
        • SHA256 65b3d962cd6c199ad2e9a569487075e891160eac4b00ef819739fcef6bdf200b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cd.cp311-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\charset_normalizer\cd.cp311-win_amd64.pyd
        • Size 10KB
        • SHA256 b9a8e69aef5994ad69a7434879f84a96a92c7473e60a8b82903cfe97ae3d0b29
        • MD5 SHA1 SHA512 SSDEEP TLSH

        freetype.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\freetype.dll
        • Size 639KB
        • SHA256 1c487392d6d06970ba3c7b52705881f1fb069f607243499276c2f0c033c7df6f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icon.ico

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\icon.ico
        • Size 278KB
        • SHA256 4cd0ab683b720e086fd03ba6db517ace09bf30c6203db020a31d393495f50338
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libcrypto-3.dll
        • Size 4.9MB
        • SHA256 2a234b5aa20c3faecf725bbb54fb33f3d94543f78fa7045408e905593e49960a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-8.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libjpeg-9.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libjpeg-9.dll
        • Size 238KB
        • SHA256 3a224af540c96574800f5e9acf64b2cdfb9060e727919ec14fbd187a9b5bfe69
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libmodplug-1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libmodplug-1.dll
        • Size 259KB
        • SHA256 0c1a9032812ec4c20003a997423e67b71ecb5e59d62cdc18a5bf591176a9010e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libogg-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libogg-0.dll
        • Size 25KB
        • SHA256 57abc4f6a9accdd08bf9a2b022a66640cc626a5bd4dac6c7c4f06a5df61ee1fe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libopus-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libopus-0.dll
        • Size 359KB
        • SHA256 771cae79410f7fcc4f993a105a18c4ed9e8cbddd6f807a42228d95f575808806
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libopusfile-0.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libopusfile-0.dll
        • Size 45KB
        • SHA256 ccaaca81810bd2d1cab4692b4253a639f8d5516996db0e24d881efd3efdcc6a4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libpng16-16.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libpng16-16.dll
        • Size 206KB
        • SHA256 e688b4a4d18f4b6ccc99c6ca4980f51218cb825610775192d9b60b2f05eff2d5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libssl-3.dll
        • Size 771KB
        • SHA256 41ad1a04ca27a7959579e87fbbda87c93099616a64a0e66260c983381c5570d1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libtiff-5.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libtiff-5.dll
        • Size 422KB
        • SHA256 ebfe97ac5ef26b94945af3db5ffd110a4b8e92dc02559bf81ccb33f0d5ebce95
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libwebp-7.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\libwebp-7.dll
        • Size 437KB
        • SHA256 9a53563b6058f70f2725029b7dd2fe96f869c20e8090031cd303e994dfe07b50
        • MD5 SHA1 SHA512 SSDEEP TLSH

        portmidi.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\portmidi.dll
        • Size 41KB
        • SHA256 c9f8d9043ac1570b10f104f2d00aec791f56261c84ee40773be73d0a3822e013
        • MD5 SHA1 SHA512 SSDEEP TLSH

        pyexpat.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\pyexpat.pyd
        • Size 193KB
        • SHA256 35134cca2dcf7c2b7e592b677833322b6b72a6a88afcd3935afe5907a282e89e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python311.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\python311.dll
        • Size 5.5MB
        • SHA256 5ecda62f6fd2822355c560412f6d90be46a7f763f0ffeec9854177904632ac2d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\select.pyd
        • Size 29KB
        • SHA256 e7fe45baef9cee192c65fcfce1790ccb6f3f9b81e86df82c08f838e86275af02
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tcl86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\tcl86t.dll
        • Size 1.8MB
        • SHA256 a91781fe13548b89817462b00058a75fb0b607ec8ce99d265719ced573ade7b6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tk86t.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\tk86t.dll
        • Size 1.5MB
        • SHA256 20139f4c327711baf18289584fa0c8112f7bb3ba55475bded21f3d107672ed94
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\unicodedata.pyd
        • Size 1.1MB
        • SHA256 71d27537eb1e6de76fd145da4fdcbc379dc54de7854c99b2e61aae00109c13d0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        voice.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\voice.mp3
        • Size 815KB
        • SHA256 ed98b6077575df678dab42b2e1e49617ab36f443b1013ead3b3cb741173000a9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        zlib1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI52442\zlib1.dll
        • Size 106KB
        • SHA256 b1f58a17f3bfd55523e7bef685acf5b32d1c2a6f25abdcd442681266fd26ab08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2236-3131-0x00007FFE7BF10000-0x00007FFE7C17C000-memory.dmp

        memory/2660-1095-0x000001B7233F0000-0x000001B723412000-memory.dmp

        memory/2660-1100-0x000001B723490000-0x000001B7234AE000-memory.dmp

        memory/2660-1101-0x000001B723730000-0x000001B7237E2000-memory.dmp

        memory/2660-1102-0x000001B7234B0000-0x000001B7234BA000-memory.dmp

        memory/3052-3130-0x00007FFE828B0000-0x00007FFE82B1C000-memory.dmp

        memory/3952-1076-0x00007FFE88EF0000-0x00007FFE8915C000-memory.dmp

        memory/3952-1119-0x00007FFE88EF0000-0x00007FFE8915C000-memory.dmp