Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    05/05/2026, 04:23

General

  • Target
    2026-05-05_d2a7fe3078a13410165347ba7f75d00c_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample260505-e1by1sct3l
  • SHA256 783f67724fa57765313f3e32b25532ffd065f86d1c23fdc992062b3b4ab8e36d
  • 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 15 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 7 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • 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 15 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 11 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\2026-05-05_d2a7fe3078a13410165347ba7f75d00c_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-05_d2a7fe3078a13410165347ba7f75d00c_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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:5084
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2026-05-05_d2a7fe3078a13410165347ba7f75d00c_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:3600
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Default User\RuntimeBroker.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:3736
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\RuntimeBroker.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:5572
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:5544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\PLA\Reports\System.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:5296
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:1012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\ZHy4obcIXn.bat"
      2⤵
        PID:392
        • C:\Windows\SysWOW64\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          3⤵
            PID:5248
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              4⤵
                PID:6608
            • C:\Windows\PLA\Reports\System.exe
              "C:\Windows\PLA\Reports\System.exe"
              3⤵
                PID:6304
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:5400
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:5952
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4812
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:2872
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:792
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:5552
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1692
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4172
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:5228
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 12 /tr "'C:\Windows\PLA\Reports\System.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:6112
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Windows\PLA\Reports\System.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1044
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\Windows\PLA\Reports\System.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4860
          • C:\Users\Default User\RuntimeBroker.exe
            "C:\Users\Default User\RuntimeBroker.exe"
            1⤵
              PID:4244
            • C:\Recovery\WindowsRE\RuntimeBroker.exe
              "C:\Recovery\WindowsRE\RuntimeBroker.exe"
              1⤵
                PID:5524
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe'" /f
                1⤵
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:1068
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe'" /rl HIGHEST /f
                1⤵
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:5644
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe'" /rl HIGHEST /f
                1⤵
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:3872
              • C:\Windows\PLA\Reports\System.exe
                "C:\Windows\PLA\Reports\System.exe"
                1⤵
                  PID:704
                • C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe
                  "C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe"
                  1⤵
                    PID:6660
                  • C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe
                    "C:\Program Files\Java\jdk-1.8\lib\spoolsv.exe"
                    1⤵
                      PID:6252

                    Network

                          MITRE ATT&CK Enterprise v16

                          Replay Monitor

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                          Downloads

                          csrss.exe

                          • Path C:\Program Files (x86)\Windows Media Player\en-US\csrss.exe
                          • Size 2.0MB
                          • SHA256 783f67724fa57765313f3e32b25532ffd065f86d1c23fdc992062b3b4ab8e36d
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          ZHy4obcIXn.bat

                          • Path C:\Users\Admin\AppData\Local\Temp\ZHy4obcIXn.bat
                          • Size 198B
                          • SHA256 8b266aa2b7226a0bdaa379af42248884156c3ab507ae09b9c07254f6b735737c
                          • MD5 SHA1 SHA512 TLSH

                          __PSScriptPolicyTest_apzvjqua.0dt.ps1

                          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_apzvjqua.0dt.ps1
                          • Size 60B
                          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                          • MD5 SHA1 SHA512 TLSH

                          memory/3600-29400-0x0000000071120000-0x000000007116C000-memory.dmp

                          memory/3736-20363-0x0000000007770000-0x0000000007DEA000-memory.dmp

                          memory/3736-18623-0x0000000071120000-0x000000007116C000-memory.dmp

                          memory/3736-8780-0x0000000005740000-0x00000000057A6000-memory.dmp

                          memory/3736-23946-0x0000000004A60000-0x0000000004A71000-memory.dmp

                          memory/3736-22798-0x00000000073D0000-0x0000000007466000-memory.dmp

                          memory/3736-21386-0x00000000071A0000-0x00000000071AA000-memory.dmp

                          memory/3736-7486-0x00000000023C0000-0x00000000023F6000-memory.dmp

                          memory/3736-20364-0x0000000007130000-0x000000000714A000-memory.dmp

                          memory/3736-18622-0x0000000006D80000-0x0000000006DB4000-memory.dmp

                          memory/3736-30691-0x0000000005F70000-0x0000000005F7E000-memory.dmp

                          memory/3736-18630-0x0000000006D60000-0x0000000006D7E000-memory.dmp

                          memory/3736-19053-0x0000000006DD0000-0x0000000006E74000-memory.dmp

                          memory/3736-7487-0x0000000005040000-0x000000000566A000-memory.dmp

                          memory/3736-10882-0x0000000006210000-0x000000000625C000-memory.dmp

                          memory/3736-10661-0x0000000005710000-0x000000000572E000-memory.dmp

                          memory/3736-8952-0x0000000005820000-0x0000000005B77000-memory.dmp

                          memory/3736-8779-0x00000000056A0000-0x00000000056C2000-memory.dmp

                          memory/5084-120-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-1779-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-13-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-10-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-14-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-6-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-5-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-74-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-40-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-78-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-42-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-44-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-82-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-80-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-76-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-84-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-72-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-70-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-68-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-66-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-64-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-62-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-60-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-58-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-56-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-54-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-52-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-50-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-48-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-46-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-86-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-92-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-90-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-88-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-104-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-94-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-116-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-114-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-112-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-110-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-108-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-18-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-130-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-128-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-126-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-124-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-122-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-118-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-106-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-103-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-100-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-98-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-96-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-16-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-2034-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-2389-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-5231-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-5232-0x0000000002560000-0x000000000257C000-memory.dmp

                          memory/5084-5233-0x0000000002590000-0x00000000025E0000-memory.dmp

                          memory/5084-5235-0x0000000006460000-0x0000000006470000-memory.dmp

                          memory/5084-5234-0x00000000025F0000-0x00000000025F8000-memory.dmp

                          memory/5084-5237-0x00000000064B0000-0x00000000064B8000-memory.dmp

                          memory/5084-5236-0x0000000006470000-0x0000000006486000-memory.dmp

                          memory/5084-5238-0x00000000064C0000-0x00000000064D2000-memory.dmp

                          memory/5084-5239-0x0000000006870000-0x0000000006878000-memory.dmp

                          memory/5084-5241-0x0000000006890000-0x0000000006922000-memory.dmp

                          memory/5084-5240-0x0000000006880000-0x0000000006890000-memory.dmp

                          memory/5084-5242-0x0000000006930000-0x000000000693A000-memory.dmp

                          memory/5084-5243-0x0000000006940000-0x0000000006948000-memory.dmp

                          memory/5084-5244-0x0000000006960000-0x000000000696C000-memory.dmp

                          memory/5084-5245-0x0000000006990000-0x0000000006998000-memory.dmp

                          memory/5084-5247-0x00000000069A0000-0x00000000069B2000-memory.dmp

                          memory/5084-5248-0x0000000007C20000-0x000000000814C000-memory.dmp

                          memory/5084-5249-0x0000000006A40000-0x0000000006A4C000-memory.dmp

                          memory/5084-5250-0x0000000006A60000-0x0000000006A6C000-memory.dmp

                          memory/5084-5251-0x0000000006A70000-0x0000000006A7C000-memory.dmp

                          memory/5084-5252-0x0000000006A90000-0x0000000006A9C000-memory.dmp

                          memory/5084-5253-0x0000000006AA0000-0x0000000006AA8000-memory.dmp

                          memory/5084-5254-0x0000000006B00000-0x0000000006B0A000-memory.dmp

                          memory/5084-5257-0x00000000084E0000-0x00000000084E8000-memory.dmp

                          memory/5084-5260-0x0000000008500000-0x000000000850C000-memory.dmp

                          memory/5084-5259-0x00000000084F0000-0x00000000084FA000-memory.dmp

                          memory/5084-5263-0x0000000008520000-0x0000000008586000-memory.dmp

                          memory/5084-5258-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-5256-0x00000000084D0000-0x00000000084D8000-memory.dmp

                          memory/5084-5255-0x0000000006B10000-0x0000000006B1E000-memory.dmp

                          memory/5084-8153-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-20-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-22-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-24-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-26-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-28-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-34-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-36-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-38-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-30-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-32-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-8-0x0000000005C20000-0x0000000005ED1000-memory.dmp

                          memory/5084-4-0x0000000005C20000-0x0000000005ED6000-memory.dmp

                          memory/5084-3-0x0000000005670000-0x0000000005C16000-memory.dmp

                          memory/5084-2-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-8464-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-0-0x0000000002C40000-0x0000000002C50000-memory.dmp

                          memory/5084-1-0x00000000053B0000-0x0000000005668000-memory.dmp

                          memory/5524-29492-0x0000000006DB0000-0x0000000006DC2000-memory.dmp