Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/07/2026, 04:31

General

  • Target
    stage3.exe
  • Size 10.9MB
  • Sample260708-e5fg1abw2r
  • SHA256 830a22ea4eb2ebb8c60c7731fa5175d3a315d023a812aea40147326cc4c8a4dd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: CastleRAT

    CastleRAT is a trojan available in both Python and C variants.

  • Detects C variant of CastleRAT. 26 IoCs
  • Badlisted process makes network request 1 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell to get system information as a root user.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 32 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unexpected DNS network traffic destination 28 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Inno Setup is an open-source installation builder for Windows applications. 2 IoCs

    Inno Setup installer

  • 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 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\stage3.exe
    "C:\Users\Admin\AppData\Local\Temp\stage3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3276
    • C:\Users\Admin\AppData\Local\Temp\is-NWQ39IZZ8Z.tmp\stage3.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-NWQ39IZZ8Z.tmp\stage3.tmp" /SL5="$5027C,10202427,893952,C:\Users\Admin\AppData\Local\Temp\stage3.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:5328
      • C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\pythonw.exe
        "C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\pythonw.exe" "C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\run.pyw"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Unexpected DNS network traffic destination
        • Suspicious use of WriteProcessMemory
        PID:4640
        • C:\Windows\System32\schtasks.exe
          C:\Windows\System32\schtasks.exe /Create /F /TN dcaczhjitqazbalk /XML C:\Users\Admin\AppData\Local\Temp\t.xml
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3724
        • C:\Windows\System32\Wbem\wmic.exe
          wmic process where name='pythonw.exe' get processid,commandline
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5376
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c "ver"
          4⤵
            PID:4896
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -NoProfile -NonInteractive -Command "(Get-CimInstance Win32_OperatingSystem).Caption"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3756
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -NoProfile -NonInteractive -Command "(Get-CimInstance -Namespace root/SecurityCenter2 -ClassName AntiVirusProduct).displayName"
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:252
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -NoProfile -NonInteractive -NoLogo -Command -
            4⤵
            • Badlisted process makes network request
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:1452
            • C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe
              "C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe" "C:\ProgramData\Yk6mcCVKv2MhDGAq\music.pyc"
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:1532
              • C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe
                "C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe" "C:\ProgramData\Yk6mcCVKv2MhDGAq\music.pyc"
                6⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious behavior: AddClipboardFormatListener
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:3820
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
                  7⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2564
    • C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\pythonw.exe
      C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\pythonw.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:3428
    • C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe
      C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:956

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Yk6mcCVKv2MhDGAq.lnk

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq.lnk
          • Size 841B
          • SHA256 191535c03ee51a699db204dcf84e33c5f4df3fa8cf0ef931185a3a1fd4af4353
          • MD5 SHA1 SHA512 TLSH

          SI1VrWfezbAjKDriYc1D9.Jw

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\SI1VrWfezbAjKDriYc1D9.Jw
          • Size 12.2MB
          • SHA256 5f572c6825a96014233e15f897754ff881ed82b5a5fde91dd331a043d055fd77
          • MD5 SHA1 SHA512 SSDEEP TLSH

          VCRUNTIME140.dll

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\VCRUNTIME140.dll
          • Size 117KB
          • SHA256 36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ctypes.pyd

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\_ctypes.pyd
          • Size 128KB
          • SHA256 f63c6c7e71c342084d8f1a108786ca6975a52cefef8be32cc2589e6e2fe060c8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          music.pyc

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\music.pyc
          • Size 144KB
          • SHA256 9e7ed9ee536395a38a9f4094237b6d9b0ebed19cbb703610235d1783f685ddb7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python3.DLL

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\python3.DLL
          • Size 68KB
          • SHA256 a5c6a329698490a035133433928d04368ce6285bb91a9d074fc285de4c9a32a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python313._pth

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\python313._pth
          • Size 80B
          • SHA256 35ddf94682ff9aa713a8d63557242ad00f3f28fdd39337f02c3bda4c0f791577
          • MD5 SHA1 SHA512 TLSH

          python313.dll

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\python313.dll
          • Size 5.8MB
          • SHA256 0c0a66505093b6a4bb3475f716bd3d9552095776f6a124709c13b3f9552c7d99
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python313.zip

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\python313.zip
          • Size 3.6MB
          • SHA256 4141b13fe0ce35edfc1c819f1f3366e1476f99221ef042b270bd6f8ca6aaf35a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          pythonw.exe

          • Path C:\ProgramData\Yk6mcCVKv2MhDGAq\pythonw.exe
          • Size 99KB
          • SHA256 c596446b0fe4a9df90dac9f44150c94b4133fdd9fcd297a295c319c9ec0c7ec6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          VCRUNTIME140.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\VCRUNTIME140.dll
          • Size 116KB
          • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _bz2.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_bz2.pyd
          • Size 82KB
          • SHA256 00b8ca9a338d2b47285c9e56d6d893db2a999b47216756f18439997fb80a56e3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ctypes.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_ctypes.pyd
          • Size 121KB
          • SHA256 c148292328f0aab7863af82f54f613961e7cb95b7215f7a81cafaf45bd4c42b7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _hashlib.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_hashlib.pyd
          • Size 63KB
          • SHA256 87dd0c858620287454fd6d31d52b6a48eddbb2a08e09e8b2d9fdb0b92200d766
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _lzma.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_lzma.pyd
          • Size 155KB
          • SHA256 f5e01b516c2c23035f7703e23569dec26c5616c05a929b2580ae474a5c6722c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _queue.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_queue.pyd
          • Size 31KB
          • SHA256 3f8e7e6aa13b417acc78b63434fb1144e6319a010a9fc376c54d6e69b638fe4c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _socket.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_socket.pyd
          • Size 77KB
          • SHA256 a19e3c7c03ef1b5625790b1c9c42594909311ab6df540fbf43c6aa93300ab166
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ssl.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\_ssl.pyd
          • Size 174KB
          • SHA256 ba5388d6a6557d431e086734a3323621dc447f63ba299b0a815e5837cf869678
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libcrypto-3.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\libcrypto-3.dll
          • Size 5.0MB
          • SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libffi-8.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\libffi-8.dll
          • Size 38KB
          • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libssl-3.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\libssl-3.dll
          • Size 768KB
          • SHA256 2e9fbcd8f7fdc13a5179533239811456554f2b3aa2fb10e1b17be0df81c79006
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python3.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\python3.dll
          • Size 65KB
          • SHA256 db84bc052cfb121fe4db36242ba5f1d2c031b600ef5d8d752cf25b7c02b6bac6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python311._pth

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\python311._pth
          • Size 31B
          • SHA256 5ab6eef584e230b321ff0ecbf7658b4343a7b864c9f96ace02ec10d203f9829b
          • MD5 SHA1 SHA512

          python311.dll

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\python311.dll
          • Size 5.5MB
          • SHA256 0817a2a657a24c0d5fbb60df56960f42fc66b3039d522ec952dab83e2d869364
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python311.zip

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\python311.zip
          • Size 4.1MB
          • SHA256 7d0f59c930e7d3d9352399ea3c95c0272489b3c09a8e95faaedfa8a23e20e5b1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          pythonw.exe

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\pythonw.exe
          • Size 99KB
          • SHA256 d5355e1de2a5195dccb1ba524b146aa7705be71af18d876819756838251b37b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          run.pyw

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\run.pyw
          • Size 125KB
          • SHA256 1ca17239f5bec17ef244fc55357c6d0560337d7cadd1bb61574ab010f14a8d14
          • MD5 SHA1 SHA512 SSDEEP TLSH

          select.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\select.pyd
          • Size 29KB
          • SHA256 bae0974390945520eb99ab32486c6a964691f8f4a028ac408d98fa8fb0db7d90
          • MD5 SHA1 SHA512 SSDEEP TLSH

          unicodedata.pyd

          • Path C:\Users\Admin\AppData\Local\Microsoft\WindowsApps\Microsoft.PythonApp_79jvms427k1qi\unicodedata.pyd
          • Size 1.1MB
          • SHA256 37c68617fa02a2cadced17ef724e2d450ef12a8a37215da789a4679fde1c5c02
          • MD5 SHA1 SHA512 SSDEEP TLSH

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 545804662875039d9ea177eba00f0878173a24490cc6b4759f91fac066fe0329
          • MD5 SHA1 SHA512 TLSH

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 19fa1db91fac8cc77d548e71230cd62d2e0d17640ae5b148c14ec6693eeeb2c3
          • MD5 SHA1 SHA512 TLSH

          __PSScriptPolicyTest_np5mzh1p.jkg.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_np5mzh1p.jkg.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          stage3.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-NWQ39IZZ8Z.tmp\stage3.tmp
          • Size 4.2MB
          • SHA256 100d14ecd815f60a71ebdb71b95c51eaf72fbf9bb132df02fdbe9d1eea869b2a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          t.xml

          • Path C:\Users\Admin\AppData\Local\Temp\t.xml
          • Size 2KB
          • SHA256 9c06176e4024b511580fdbb38a152fd46e73d466d5167a67f7631d2fdc239497
          • MD5 SHA1 SHA512 TLSH

          memory/1452-150-0x000001CE707B0000-0x000001CE707C2000-memory.dmp

          memory/1452-151-0x000001CE58560000-0x000001CE5856A000-memory.dmp

          memory/1452-149-0x000001CE70C70000-0x000001CE70D22000-memory.dmp

          memory/1532-264-0x000001899C590000-0x000001899C736000-memory.dmp

          memory/1532-262-0x000001899C590000-0x000001899C736000-memory.dmp

          memory/1532-263-0x000001899C590000-0x000001899C736000-memory.dmp

          memory/1532-260-0x000001899B880000-0x000001899B881000-memory.dmp

          memory/1532-265-0x000001899C590000-0x000001899C736000-memory.dmp

          memory/1532-261-0x000001899C590000-0x000001899C736000-memory.dmp

          memory/2564-279-0x0000013EBA7A0000-0x0000013EBA7E8000-memory.dmp

          memory/2564-283-0x0000013EBA830000-0x0000013EBA84E000-memory.dmp

          memory/2564-282-0x0000013EBABF0000-0x0000013EBACA2000-memory.dmp

          memory/3276-1-0x0000000000650000-0x0000000000739000-memory.dmp

          memory/3276-90-0x0000000000650000-0x0000000000739000-memory.dmp

          memory/3756-131-0x0000022AF0110000-0x0000022AF013A000-memory.dmp

          memory/3756-130-0x0000022AEFC80000-0x0000022AEFC8A000-memory.dmp

          memory/3756-122-0x0000022AD7AC0000-0x0000022AD7AE2000-memory.dmp

          memory/3756-128-0x0000022AEFCA0000-0x0000022AEFCBE000-memory.dmp

          memory/3756-129-0x0000022AEFED0000-0x0000022AEFF82000-memory.dmp

          memory/3756-132-0x0000022AF0110000-0x0000022AF0134000-memory.dmp

          memory/3820-295-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-293-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-273-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-276-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-275-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-274-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-312-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-301-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-300-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-285-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-287-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-288-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-292-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-297-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-289-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-298-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-294-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-296-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-291-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-272-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/3820-290-0x000002EA6AA50000-0x000002EA6ABF6000-memory.dmp

          memory/5328-86-0x0000000000E00000-0x000000000124C000-memory.dmp

          memory/5328-9-0x0000000003EE0000-0x0000000004020000-memory.dmp

          memory/5328-8-0x0000000003EE0000-0x0000000004020000-memory.dmp

          memory/5328-6-0x0000000002C70000-0x0000000002C71000-memory.dmp