Analysis

  • max time kernel
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/10/2026, 15:22

General

  • Target
    2026-09-30_451460287fbb20934914b8e928e613e4_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 1.7MB
  • Sample261001-sr38ssvbjd
  • SHA256 657fa3fc32435e321e515514aa5b197f07db9135bb680be3658c3d2e879631b8
  • 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 1 IoCs
  • Process spawned unexpected child process 12 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • Detects executables packed with SmartAssembly 5 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 12 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 5 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 2 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 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 1 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • System policy modification 1 TTPs 3 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\2026-09-30_451460287fbb20934914b8e928e613e4_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-30_451460287fbb20934914b8e928e613e4_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • 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
    • System policy modification
    PID:2688
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:2616
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/$Recycle.Bin/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:5744
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Documents and Settings/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6724
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/PerfLogs/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6760
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6796
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Program Files (x86)/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:4668
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/ProgramData/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6844
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Recovery/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6868
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/System Volume Information/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6920
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Users/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6964
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6996
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:/Windows.old/'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:6292
    • C:\Windows.old\fontdrvhost.exe
      "C:\Windows.old\fontdrvhost.exe"
      2⤵
        PID:1172
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Windows.old\fontdrvhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4336
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows.old\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2452
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Windows.old\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4640
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3992
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4708
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1320
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 10 /tr "'C:\Users\Default\StartMenuExperienceHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3356
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Default\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3232
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 14 /tr "'C:\Users\Default\StartMenuExperienceHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4232
    • C:\Program Files\dotnet\shared\Microsoft.NETCore.App\csrss.exe
      "C:\Program Files\dotnet\shared\Microsoft.NETCore.App\csrss.exe"
      1⤵
        PID:2076
      • C:\Windows.old\fontdrvhost.exe
        "C:\Windows.old\fontdrvhost.exe"
        1⤵
          PID:1228
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "ShellHostS" /sc MINUTE /mo 14 /tr "'C:\Windows.old\ShellHost.exe'" /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:5368
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "ShellHost" /sc ONLOGON /tr "'C:\Windows.old\ShellHost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3272
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "ShellHostS" /sc MINUTE /mo 14 /tr "'C:\Windows.old\ShellHost.exe'" /rl HIGHEST /f
          1⤵
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:5620
        • C:\Windows.old\ShellHost.exe
          "C:\Windows.old\ShellHost.exe"
          1⤵
            PID:2996

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                __PSScriptPolicyTest_4ktdcc54.kxk.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4ktdcc54.kxk.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512 TLSH

                fontdrvhost.exe

                • Path C:\Windows.old\fontdrvhost.exe
                • Size 1.7MB
                • SHA256 657fa3fc32435e321e515514aa5b197f07db9135bb680be3658c3d2e879631b8
                • MD5 SHA1 SHA512 SSDEEP TLSH

                memory/2688-0-0x0000000074F82000-0x0000000074F83000-memory.dmp

                memory/2688-1-0x00000000053D0000-0x000000000564C000-memory.dmp

                memory/2688-2-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-3-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-4-0x0000000005650000-0x0000000005C0A000-memory.dmp

                memory/2688-5-0x0000000005C10000-0x0000000005E8A000-memory.dmp

                memory/2688-7-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-9-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-40-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-60-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-53-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-99-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-123-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-131-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-130-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-127-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-125-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-121-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-119-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-117-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-115-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-113-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-112-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-109-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-107-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-105-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-103-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-101-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-95-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-93-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-91-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-89-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-87-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-83-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-81-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-79-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-77-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-98-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-85-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-75-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-73-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-71-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-69-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-67-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-65-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-55-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-52-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-49-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-47-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-63-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-61-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-57-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-46-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-43-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-41-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-37-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-35-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-31-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-33-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-23-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-22-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-17-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-13-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-11-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-29-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-27-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-25-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-19-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-15-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-6-0x0000000005C10000-0x0000000005E84000-memory.dmp

                memory/2688-1664-0x0000000074F82000-0x0000000074F83000-memory.dmp

                memory/2688-1665-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-5228-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-5229-0x0000000002B00000-0x0000000002B1C000-memory.dmp

                memory/2688-5230-0x0000000002B30000-0x0000000002B80000-memory.dmp

                memory/2688-5232-0x00000000065F0000-0x0000000006600000-memory.dmp

                memory/2688-5231-0x0000000002B90000-0x0000000002B98000-memory.dmp

                memory/2688-5233-0x0000000006650000-0x0000000006666000-memory.dmp

                memory/2688-5234-0x0000000006630000-0x0000000006638000-memory.dmp

                memory/2688-5235-0x0000000006670000-0x0000000006680000-memory.dmp

                memory/2688-5236-0x00000000066C0000-0x00000000066CA000-memory.dmp

                memory/2688-5237-0x00000000069F0000-0x00000000069FC000-memory.dmp

                memory/2688-5238-0x0000000006A00000-0x0000000006A12000-memory.dmp

                memory/2688-5239-0x0000000006A30000-0x0000000006F5C000-memory.dmp

                memory/2688-5240-0x0000000006FC0000-0x0000000006FCC000-memory.dmp

                memory/2688-5241-0x0000000006FD0000-0x0000000006FDC000-memory.dmp

                memory/2688-5243-0x00000000073A0000-0x00000000073A8000-memory.dmp

                memory/2688-5244-0x00000000073B0000-0x00000000073BC000-memory.dmp

                memory/2688-5242-0x0000000007390000-0x000000000739A000-memory.dmp

                memory/2688-5246-0x00000000073C0000-0x0000000007452000-memory.dmp

                memory/2688-5245-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-5247-0x00000000074A0000-0x00000000074AC000-memory.dmp

                memory/2688-5249-0x0000000007610000-0x0000000007676000-memory.dmp

                memory/2688-6869-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-7492-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/2688-20671-0x0000000074F70000-0x000000007572C000-memory.dmp

                memory/4668-13024-0x0000000004F80000-0x0000000004FB6000-memory.dmp

                memory/4668-15092-0x0000000005790000-0x0000000005DDA000-memory.dmp

                memory/4668-16576-0x0000000005720000-0x0000000005786000-memory.dmp

                memory/4668-16997-0x0000000005F50000-0x00000000062AB000-memory.dmp

                memory/6292-16510-0x0000000005120000-0x0000000005142000-memory.dmp

                memory/6760-19792-0x00000000061A0000-0x00000000061BE000-memory.dmp

                memory/6760-19955-0x0000000006610000-0x000000000665C000-memory.dmp