Analysis

  • max time kernel
    145s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/10/2026, 17:04

General

  • Target
    2026-10-02_1402c0e60b52db313522028577dd2999_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample261003-vlflnavtex
  • SHA256 43812998e440b805ec6629f5008c8408c34edc8d447dcd45ef0ed9e6273a2086
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Process spawned unexpected child process 6 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • UAC bypass 3 TTPs 6 IoCs
  • Detects executables packed with SmartAssembly 7 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 3 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 6 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\2026-10-02_1402c0e60b52db313522028577dd2999_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-02_1402c0e60b52db313522028577dd2999_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4188
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2026-10-02_1402c0e60b52db313522028577dd2999_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:756
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows Sidebar\SecurityHealthService.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:6164
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Windows NT\fontdrvhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:6172
    • C:\Program Files\Windows NT\fontdrvhost.exe
      "C:\Program Files\Windows NT\fontdrvhost.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:7028
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\302a9cf3-1bdc-43ac-bf52-9ec2bddbf345.vbs"
        3⤵
        • Executes a VBScript file via the Windows Script Host.
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        PID:3416
        • C:\Program Files\Windows NT\fontdrvhost.exe
          "C:\Program Files\Windows NT\fontdrvhost.exe"
          4⤵
            PID:6412
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\efd18f54-9dc8-46ed-b018-688467c79b7b.vbs"
          3⤵
          • Executes a VBScript file via the Windows Script Host.
          • System Location Discovery: System Language Discovery
          PID:3092
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Sidebar\SecurityHealthService.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5740
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthService" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\SecurityHealthService.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2296
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Sidebar\SecurityHealthService.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5580
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows NT\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\Windows NT\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3168
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows NT\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:996
    • C:\Program Files\Windows Sidebar\SecurityHealthService.exe
      "C:\Program Files\Windows Sidebar\SecurityHealthService.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2452
    • C:\Program Files\Windows NT\fontdrvhost.exe
      "C:\Program Files\Windows NT\fontdrvhost.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1636
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:672

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            fontdrvhost.exe

            • Path C:\Program Files\Windows NT\fontdrvhost.exe
            • Size 2.0MB
            • SHA256 43812998e440b805ec6629f5008c8408c34edc8d447dcd45ef0ed9e6273a2086
            • MD5 SHA1 SHA512 SSDEEP TLSH

            SecurityHealthService.exe

            • Path C:\Program Files\Windows Sidebar\SecurityHealthService.exe
            • Size 2.0MB
            • SHA256 d3c0448e228e38dbb7ffee2e5fd564e798ed56844163d29e0efeef1a445cc207
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 21KB
            • SHA256 a2487731d570d2cbb512d71ae99d178963b06c0071685aadb4effebcfe23abe1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 21KB
            • SHA256 649dab4af802dc6207a069dd179e371db68b972c58b596da789cdadc314c3289
            • MD5 SHA1 SHA512 SSDEEP TLSH

            302a9cf3-1bdc-43ac-bf52-9ec2bddbf345.vbs

            • Path C:\Users\Admin\AppData\Local\Temp\302a9cf3-1bdc-43ac-bf52-9ec2bddbf345.vbs
            • Size 719B
            • SHA256 18db651fe26f9cb76e1d6f1d9c140a2b66c31b35652e495e22f72610eeb0e460
            • MD5 SHA1 SHA512 TLSH

            __PSScriptPolicyTest_xvthqsnh.rn2.psm1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xvthqsnh.rn2.psm1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            efd18f54-9dc8-46ed-b018-688467c79b7b.vbs

            • Path C:\Users\Admin\AppData\Local\Temp\efd18f54-9dc8-46ed-b018-688467c79b7b.vbs
            • Size 495B
            • SHA256 965cbc4b7026054b394139eaea30940058287f060a3254bab730202349ba8338
            • MD5 SHA1 SHA512 TLSH

            memory/756-9115-0x0000000002750000-0x0000000002786000-memory.dmp

            memory/756-15738-0x000000006FDF0000-0x000000006FE3C000-memory.dmp

            memory/756-15747-0x0000000007690000-0x0000000007726000-memory.dmp

            memory/4188-10-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-5230-0x0000000002B50000-0x0000000002B6C000-memory.dmp

            memory/4188-8-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-36-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-85-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-132-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-125-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-116-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-114-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-112-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-110-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-108-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-106-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-104-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-102-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-100-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-98-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-96-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-94-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-92-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-90-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-88-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-86-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-82-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-80-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-78-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-76-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-74-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-72-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-70-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-68-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-66-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-64-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-61-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-62-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-56-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-54-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-52-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-50-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-58-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-48-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-45-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-46-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-42-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-40-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-38-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-32-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-30-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-28-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-24-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-18-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-16-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-14-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-12-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-5-0x00000000052E0000-0x0000000005596000-memory.dmp

            memory/4188-7-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-35-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-126-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-22-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-20-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-3-0x0000000005870000-0x0000000005E2A000-memory.dmp

            memory/4188-130-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-26-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-122-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-120-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-118-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-1384-0x0000000074B92000-0x0000000074B93000-memory.dmp

            memory/4188-1388-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-5229-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-128-0x00000000052E0000-0x0000000005591000-memory.dmp

            memory/4188-5231-0x0000000002B80000-0x0000000002BD0000-memory.dmp

            memory/4188-5233-0x0000000006620000-0x0000000006630000-memory.dmp

            memory/4188-5232-0x0000000002BE0000-0x0000000002BE8000-memory.dmp

            memory/4188-5235-0x0000000006670000-0x0000000006678000-memory.dmp

            memory/4188-5234-0x0000000006630000-0x0000000006646000-memory.dmp

            memory/4188-5236-0x0000000006680000-0x0000000006692000-memory.dmp

            memory/4188-5237-0x00000000066C0000-0x00000000066C8000-memory.dmp

            memory/4188-5238-0x0000000006E10000-0x0000000006E20000-memory.dmp

            memory/4188-5239-0x0000000006E30000-0x0000000006EC2000-memory.dmp

            memory/4188-5240-0x0000000006DF0000-0x0000000006DFA000-memory.dmp

            memory/4188-5241-0x0000000006E00000-0x0000000006E08000-memory.dmp

            memory/4188-5242-0x0000000006EF0000-0x0000000006EFC000-memory.dmp

            memory/4188-5243-0x0000000006F00000-0x0000000006F08000-memory.dmp

            memory/4188-5245-0x0000000006F20000-0x0000000006F32000-memory.dmp

            memory/4188-5246-0x0000000006F70000-0x000000000749C000-memory.dmp

            memory/4188-5247-0x0000000007630000-0x000000000763C000-memory.dmp

            memory/4188-5248-0x0000000007650000-0x000000000765C000-memory.dmp

            memory/4188-5249-0x0000000007660000-0x000000000766C000-memory.dmp

            memory/4188-5250-0x0000000007680000-0x000000000768C000-memory.dmp

            memory/4188-5251-0x0000000007690000-0x0000000007698000-memory.dmp

            memory/4188-5253-0x0000000007A30000-0x0000000007A3E000-memory.dmp

            memory/4188-5256-0x0000000007A80000-0x0000000007A8A000-memory.dmp

            memory/4188-5257-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-5258-0x0000000007AB0000-0x0000000007ABC000-memory.dmp

            memory/4188-5255-0x0000000007A70000-0x0000000007A78000-memory.dmp

            memory/4188-5254-0x0000000007A60000-0x0000000007A68000-memory.dmp

            memory/4188-5252-0x0000000007B70000-0x0000000007B7A000-memory.dmp

            memory/4188-5260-0x0000000007AD0000-0x0000000007B36000-memory.dmp

            memory/4188-7635-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-8294-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-0-0x0000000074B92000-0x0000000074B93000-memory.dmp

            memory/4188-1-0x00000000055B0000-0x0000000005868000-memory.dmp

            memory/4188-16237-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-2-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-4-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/4188-6-0x0000000074B80000-0x000000007533C000-memory.dmp

            memory/6164-15729-0x0000000006680000-0x00000000069DB000-memory.dmp

            memory/6164-10554-0x0000000005BF0000-0x000000000623A000-memory.dmp

            memory/6164-14389-0x0000000006270000-0x0000000006292000-memory.dmp

            memory/6164-15741-0x000000006FDF0000-0x000000006FE3C000-memory.dmp

            memory/6164-14540-0x0000000006390000-0x00000000063F6000-memory.dmp

            memory/6172-15731-0x0000000005DE0000-0x0000000005E2C000-memory.dmp

            memory/6172-15744-0x0000000007700000-0x0000000007D7C000-memory.dmp

            memory/6172-15746-0x0000000007110000-0x000000000711A000-memory.dmp

            memory/6172-15745-0x00000000070A0000-0x00000000070BA000-memory.dmp

            memory/6172-15730-0x0000000005DB0000-0x0000000005DCE000-memory.dmp

            memory/6172-15732-0x0000000006340000-0x0000000006376000-memory.dmp

            memory/6172-15737-0x0000000006FD0000-0x0000000007073000-memory.dmp

            memory/6172-15736-0x00000000063A0000-0x00000000063C0000-memory.dmp

            memory/6172-15733-0x000000006FDF0000-0x000000006FE3C000-memory.dmp

            memory/7028-20975-0x0000000008D00000-0x0000000008D12000-memory.dmp