Analysis

  • max time kernel
    8s
  • max time network
    40s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/07/2024, 21:49

General

  • Target
    Crystal.exe
  • Size 102.4MB
  • Sample240701-1pre8a1hmg
  • SHA256 b5409eaa14a7767b885091c5545a7ccaa9a1a76573c8c1e25abf0355d0ecc8f6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Enumerates VirtualBox DLL files 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Crystal.exe
    "C:\Users\Admin\AppData\Local\Temp\Crystal.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2828
    • C:\Users\Admin\AppData\Local\Temp\Crystal.exe
      "C:\Users\Admin\AppData\Local\Temp\Crystal.exe"
      2⤵
      • Enumerates VirtualBox DLL files
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3576
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "Add-MpPreference -ExclusionPath \"C:\Users\Admin\PyApps\""
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4624
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Users\Admin\PyApps\activate.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1392
        • C:\Windows\system32\attrib.exe
          attrib +s +h .
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:1388
        • C:\Users\Admin\PyApps\Application.exe
          "Application.exe"
          4⤵
          • Executes dropped EXE
          PID:3548
          • C:\Users\Admin\PyApps\Application.exe
            "Application.exe"
            5⤵
              PID:4376
              • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                powershell -Command "Add-MpPreference -ExclusionPath \"C:\Users\Admin\PyApps\""
                6⤵
                • Command and Scripting Interpreter: PowerShell
                PID:4496
          • C:\Windows\system32\taskkill.exe
            taskkill /f /im "Crystal.exe"
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:4256
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x49c 0x4cc
      1⤵
        PID:3104

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            SDL2.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\SDL2.dll
            • Size 2.4MB
            • SHA256 520d0459b91efa32fbccf9027a9ca1fc5aae657e679ce8e90f179f9cf5afd279
            • MD5 SHA1 SHA512 SSDEEP

            SDL2_image.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\SDL2_image.dll
            • Size 122KB
            • SHA256 1e364af75fee0c83506fbdfd4d5b0e386c4e9c6a33ddbddac61ddb131e360194
            • MD5 SHA1 SHA512 SSDEEP

            SDL2_mixer.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\SDL2_mixer.dll
            • Size 285KB
            • SHA256 2a0fc5e9f72c2eaec3240cb82b7594a58ccda609485981f256b94d0a4dd8d6f8
            • MD5 SHA1 SHA512 SSDEEP

            SDL2_ttf.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\SDL2_ttf.dll
            • Size 1.5MB
            • SHA256 fcdfabdfce868eb33f7514025ff59c1bb6c418f1bcd6ace2300a9cd4053e1d63
            • MD5 SHA1 SHA512 SSDEEP

            VCRUNTIME140.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\VCRUNTIME140.dll
            • Size 116KB
            • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
            • MD5 SHA1 SHA512 SSDEEP

            VCRUNTIME140_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\VCRUNTIME140_1.dll
            • Size 48KB
            • SHA256 a113f192195f245f17389e6ecbed8005990bcb2476ddad33f7c4c6c86327afe5
            • MD5 SHA1 SHA512 SSDEEP

            _asyncio.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_asyncio.pyd
            • Size 69KB
            • SHA256 5bebeb765ab9ef045bc5515166360d6f53890d3ad6fc360c20222d61841410b6
            • MD5 SHA1 SHA512 SSDEEP

            _bz2.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_bz2.pyd
            • Size 83KB
            • SHA256 3ed0e5058d370fb14aa5469d81f96c5685559c054917c7280dd4125f21d25f62
            • MD5 SHA1 SHA512 SSDEEP

            _cffi_backend.cp312-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_cffi_backend.cp312-win_amd64.pyd
            • Size 178KB
            • SHA256 d8a76d1e31bbd62a482dea9115fc1a109cb39af4cf6d1323409175f3c93113a7
            • MD5 SHA1 SHA512 SSDEEP

            _ctypes.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_ctypes.pyd
            • Size 122KB
            • SHA256 74e0e8384f6c2503215f4cf64c92efe7257f1aec44f72d67ad37dc8ba2530bc1
            • MD5 SHA1 SHA512 SSDEEP

            _decimal.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_decimal.pyd
            • Size 251KB
            • SHA256 b8221d1c9e2c892dd6227a6042d1e49200cd5cb82adbd998e4a77f4ee0e9abf1
            • MD5 SHA1 SHA512 SSDEEP

            _elementtree.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_elementtree.pyd
            • Size 130KB
            • SHA256 4869325e5cffbd13d3cc02dc78226478adfb51a802b52ff65b5adfacff3511f1
            • MD5 SHA1 SHA512 SSDEEP

            _hashlib.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_hashlib.pyd
            • Size 64KB
            • SHA256 fd77a5756a17ec0788989f73222b0e7334dd4494b8c8647b43fe554cf3cfb354
            • MD5 SHA1 SHA512 SSDEEP

            _lzma.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_lzma.pyd
            • Size 156KB
            • SHA256 7bf9ff61babebd90c499a8ed9b62141f947f90d87e0bbd41a12e99d20e06954a
            • MD5 SHA1 SHA512 SSDEEP

            _multiprocessing.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_multiprocessing.pyd
            • Size 34KB
            • SHA256 3c34031b464e7881d8f9d182f7387a86b883581fd020280ec56c1e3ec6f4cc2d
            • MD5 SHA1 SHA512 SSDEEP

            _overlapped.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_overlapped.pyd
            • Size 54KB
            • SHA256 d5f89859609371393d379b5ffd98e5b552078050e8b02a8e2900fa9b4ee8ff91
            • MD5 SHA1 SHA512 SSDEEP

            _queue.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_queue.pyd
            • Size 31KB
            • SHA256 dbdabb5fe0ccbc8b951a2c6ec033551836b072cab756aaa56b6f22730080d173
            • MD5 SHA1 SHA512 SSDEEP

            _socket.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_socket.pyd
            • Size 81KB
            • SHA256 b102522c23dac2332511eb3502466caf842d6bcd092fbc276b7b55e9cc01b085
            • MD5 SHA1 SHA512 SSDEEP

            _sqlite3.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_sqlite3.pyd
            • Size 122KB
            • SHA256 ee0e9b0a0af6a98d5e8ad5b9878688d2089f35978756196222b9d45f49168a9d
            • MD5 SHA1 SHA512 SSDEEP

            _ssl.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_ssl.pyd
            • Size 174KB
            • SHA256 a5d361707f7a2a2d726b20770e8a6fc25d753be30bcbcbbb683ffee7959557c2
            • MD5 SHA1 SHA512 SSDEEP

            _tkinter.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_tkinter.pyd
            • Size 64KB
            • SHA256 a1c74836bad3d9b0aaec8dccd92e552b5ad583bfea7ef21cd40713a265d94f7e
            • MD5 SHA1 SHA512 SSDEEP

            _uuid.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_uuid.pyd
            • Size 25KB
            • SHA256 acbf831004fb8b8d5340fe5debd9814c49bd282dd765c78faeb6bb5116288c78
            • MD5 SHA1 SHA512 SSDEEP

            _wmi.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\_wmi.pyd
            • Size 36KB
            • SHA256 752fb80edb51f45d3cc1c046f3b007802432b91aef400c985640d6b276a67c12
            • MD5 SHA1 SHA512 SSDEEP

            base_library.zip

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\base_library.zip
            • Size 1.3MB
            • SHA256 c611943f0aeb3292d049437cb03500cc2f8d12f23faf55e644bca82f43679bc0
            • MD5 SHA1 SHA512 SSDEEP

            md.cp312-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\charset_normalizer\md.cp312-win_amd64.pyd
            • Size 10KB
            • SHA256 ecf12e2c0a00c0ed4e2343ea956d78eed55e5a36ba49773633b2dfe7b04335c0
            • MD5 SHA1 SHA512 SSDEEP

            crypto_clipper.json

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\crypto_clipper.json
            • Size 273B
            • SHA256 02f7483fb15deb93cb11d7b00d1b5c38e5cae16643c5c79a268776fe5494a600
            • MD5 SHA1 SHA512

            freetype.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\freetype.dll
            • Size 639KB
            • SHA256 1c487392d6d06970ba3c7b52705881f1fb069f607243499276c2f0c033c7df6f
            • MD5 SHA1 SHA512 SSDEEP

            libcrypto-3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libcrypto-3.dll
            • Size 5.0MB
            • SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
            • MD5 SHA1 SHA512 SSDEEP

            libffi-8.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libffi-8.dll
            • Size 38KB
            • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
            • MD5 SHA1 SHA512 SSDEEP

            libjpeg-9.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libjpeg-9.dll
            • Size 238KB
            • SHA256 3a224af540c96574800f5e9acf64b2cdfb9060e727919ec14fbd187a9b5bfe69
            • MD5 SHA1 SHA512 SSDEEP

            libmodplug-1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libmodplug-1.dll
            • Size 259KB
            • SHA256 0c1a9032812ec4c20003a997423e67b71ecb5e59d62cdc18a5bf591176a9010e
            • MD5 SHA1 SHA512 SSDEEP

            libogg-0.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libogg-0.dll
            • Size 25KB
            • SHA256 57abc4f6a9accdd08bf9a2b022a66640cc626a5bd4dac6c7c4f06a5df61ee1fe
            • MD5 SHA1 SHA512 SSDEEP

            libopus-0.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libopus-0.dll
            • Size 359KB
            • SHA256 771cae79410f7fcc4f993a105a18c4ed9e8cbddd6f807a42228d95f575808806
            • MD5 SHA1 SHA512 SSDEEP

            libopus-0.x64.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libopus-0.x64.dll
            • Size 431KB
            • SHA256 c84da836e8d92421ac305842cfe5a724898ed09d340d46b129e210bdc9448131
            • MD5 SHA1 SHA512 SSDEEP

            libopusfile-0.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libopusfile-0.dll
            • Size 45KB
            • SHA256 ccaaca81810bd2d1cab4692b4253a639f8d5516996db0e24d881efd3efdcc6a4
            • MD5 SHA1 SHA512 SSDEEP

            libpng16-16.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libpng16-16.dll
            • Size 206KB
            • SHA256 e688b4a4d18f4b6ccc99c6ca4980f51218cb825610775192d9b60b2f05eff2d5
            • MD5 SHA1 SHA512 SSDEEP

            libssl-3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libssl-3.dll
            • Size 768KB
            • SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
            • MD5 SHA1 SHA512 SSDEEP

            libtiff-5.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libtiff-5.dll
            • Size 422KB
            • SHA256 ebfe97ac5ef26b94945af3db5ffd110a4b8e92dc02559bf81ccb33f0d5ebce95
            • MD5 SHA1 SHA512 SSDEEP

            libwebp-7.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\libwebp-7.dll
            • Size 437KB
            • SHA256 9a53563b6058f70f2725029b7dd2fe96f869c20e8090031cd303e994dfe07b50
            • MD5 SHA1 SHA512 SSDEEP

            portmidi.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\portmidi.dll
            • Size 41KB
            • SHA256 c9f8d9043ac1570b10f104f2d00aec791f56261c84ee40773be73d0a3822e013
            • MD5 SHA1 SHA512 SSDEEP

            pyexpat.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\pyexpat.pyd
            • Size 197KB
            • SHA256 efd6099b1a6efdadd988d08dce0d8a34bd838106238250bccd201dc7dcd9387f
            • MD5 SHA1 SHA512 SSDEEP

            python3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\python3.dll
            • Size 66KB
            • SHA256 5146005c36455e7ede4b8ecc0dc6f6fa8ea6b4a99fedbabc1994ae27dfab9d1b
            • MD5 SHA1 SHA512 SSDEEP

            python312.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\python312.dll
            • Size 6.6MB
            • SHA256 21700f0bad5769a1b61ea408dc0a140ffd0a356a774c6eb0cc70e574b929d2e2
            • MD5 SHA1 SHA512 SSDEEP

            select.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\select.pyd
            • Size 30KB
            • SHA256 411d6f538bdbaf60f1a1798fa8aa7ed3a4e8fcc99c9f9f10d21270d2f3742019
            • MD5 SHA1 SHA512 SSDEEP

            sqlite3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\sqlite3.dll
            • Size 1.5MB
            • SHA256 7ef475d27f9634f6a75e88959e003318d7eb214333d25bdf9be1270fa0308c82
            • MD5 SHA1 SHA512 SSDEEP

            tcl86t.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\tcl86t.dll
            • Size 1.7MB
            • SHA256 3d2769e69d611314d517fc9aad688a529670af94a7589f728107180ae105218f
            • MD5 SHA1 SHA512 SSDEEP

            tk86t.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\tk86t.dll
            • Size 1.5MB
            • SHA256 b30576b60aee548838243601952a05b70a9fc937f5a607f6b1413cd5ed04d900
            • MD5 SHA1 SHA512 SSDEEP

            unicodedata.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\unicodedata.pyd
            • Size 1.1MB
            • SHA256 bc2cf23b7b7491edcf03103b78dbaf42afd84a60ea71e764af9a1ddd0fe84268
            • MD5 SHA1 SHA512 SSDEEP

            zlib1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI28282\zlib1.dll
            • Size 106KB
            • SHA256 b1f58a17f3bfd55523e7bef685acf5b32d1c2a6f25abdcd442681266fd26ab08
            • MD5 SHA1 SHA512 SSDEEP

            __PSScriptPolicyTest_yhrghygh.egr.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yhrghygh.egr.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512

            memory/4624-1316-0x00007FFDA4B13000-0x00007FFDA4B15000-memory.dmp

            memory/4624-1322-0x000001BC78680000-0x000001BC786A2000-memory.dmp

            memory/4624-1327-0x00007FFDA4B10000-0x00007FFDA55D1000-memory.dmp

            memory/4624-1328-0x00007FFDA4B10000-0x00007FFDA55D1000-memory.dmp

            memory/4624-1331-0x00007FFDA4B10000-0x00007FFDA55D1000-memory.dmp