Analysis

  • max time kernel
    37s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/07/2026, 01:29

General

  • Target
    2026-07-30_59052c51b89046b79e5ba22212eab828_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 2.0MB
  • Sample260730-bwacvaaa79
  • SHA256 62ea31913081c4f64a85dde7b159a65db2bdddb2914862fee429c577c4c8c2cb
  • 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 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 8 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
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 8 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 2 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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.

  • 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 6 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\2026-07-30_59052c51b89046b79e5ba22212eab828_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-30_59052c51b89046b79e5ba22212eab828_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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:1956
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2026-07-30_59052c51b89046b79e5ba22212eab828_drokbk_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:1824
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\All Users\Packages\winlogon.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:2596
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files\WindowsPowerShell\wininit.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:812
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\backgroundTaskHost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:1964
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\Cookies\SIHClient.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:4124
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows\IdentityCRL\INT\fontdrvhost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      PID:2080
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\wqBpcQR611.bat"
      2⤵
      • Executes a command shell one-liner
      PID:5272
      • C:\Windows\SysWOW64\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:8988
          • C:\Windows\system32\w32tm.exe
            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
            4⤵
              PID:8340
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\Users\All Users\Packages\winlogon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3388
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\All Users\Packages\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1768
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\Packages\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4572
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files\WindowsPowerShell\wininit.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4820
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1732
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 10 /tr "'C:\Program Files\WindowsPowerShell\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:408
      • C:\Users\All Users\Packages\winlogon.exe
        "C:\Users\All Users\Packages\winlogon.exe"
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3496
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\backgroundTaskHost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3836
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:464
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\backgroundTaskHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4308
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SIHClientS" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Cookies\SIHClient.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4960
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SIHClient" /sc ONLOGON /tr "'C:\Users\Admin\Cookies\SIHClient.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4848
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SIHClientS" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Cookies\SIHClient.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2228
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 14 /tr "'C:\Windows\IdentityCRL\INT\fontdrvhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2276
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\IdentityCRL\INT\fontdrvhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4336
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\Windows\IdentityCRL\INT\fontdrvhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1964
      • C:\Windows\IdentityCRL\INT\fontdrvhost.exe
        "C:\Windows\IdentityCRL\INT\fontdrvhost.exe"
        1⤵
          PID:4916
        • C:\Program Files\WindowsPowerShell\wininit.exe
          "C:\Program Files\WindowsPowerShell\wininit.exe"
          1⤵
            PID:5956
          • C:\Users\Admin\Cookies\SIHClient.exe
            "C:\Users\Admin\Cookies\SIHClient.exe"
            1⤵
              PID:3876
            • C:\Recovery\WindowsRE\backgroundTaskHost.exe
              "C:\Recovery\WindowsRE\backgroundTaskHost.exe"
              1⤵
                PID:1764

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

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                    Downloads

                    __PSScriptPolicyTest_d2ieqvgu.5f2.ps1

                    • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d2ieqvgu.5f2.ps1
                    • Size 60B
                    • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                    • MD5 SHA1 SHA512 TLSH

                    wqBpcQR611.bat

                    • Path C:\Users\Admin\AppData\Local\Temp\wqBpcQR611.bat
                    • Size 207B
                    • SHA256 241e71ea55ba85600845170f5c15462b0fb92f0c9e0bc21cbae61052051fbf79
                    • MD5 SHA1 SHA512 TLSH

                    winlogon.exe

                    • Path C:\Users\All Users\Packages\winlogon.exe
                    • Size 2.0MB
                    • SHA256 62ea31913081c4f64a85dde7b159a65db2bdddb2914862fee429c577c4c8c2cb
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    memory/1824-7709-0x0000000003030000-0x0000000003066000-memory.dmp

                    memory/1824-7786-0x00000000057D0000-0x0000000005DF8000-memory.dmp

                    memory/1824-23535-0x0000000006A70000-0x0000000006ABC000-memory.dmp

                    memory/1824-23265-0x0000000006080000-0x000000000609E000-memory.dmp

                    memory/1956-90-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-118-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-78-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-5-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-12-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-18-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-16-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-14-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-11-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-8-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-6-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-26-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-42-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-50-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-48-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-46-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-44-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-40-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-38-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-36-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-34-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-32-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-30-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-24-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-22-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-20-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-28-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-72-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-84-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-120-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-80-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-130-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-128-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-126-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-124-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-122-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-116-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-114-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-112-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-110-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-106-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-104-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-82-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-100-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-98-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-96-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-94-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-92-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-108-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-2-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-88-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-86-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-102-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-3-0x00000000057F0000-0x0000000005D94000-memory.dmp

                    memory/1956-4-0x0000000005270000-0x0000000005526000-memory.dmp

                    memory/1956-76-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-74-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-70-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-68-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-66-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-64-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-62-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-60-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-58-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-56-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-55-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-52-0x0000000005270000-0x0000000005521000-memory.dmp

                    memory/1956-1324-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-1882-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-5227-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-5228-0x0000000002450000-0x000000000246C000-memory.dmp

                    memory/1956-5229-0x0000000002480000-0x00000000024D0000-memory.dmp

                    memory/1956-5231-0x00000000063D0000-0x00000000063E0000-memory.dmp

                    memory/1956-5230-0x00000000024E0000-0x00000000024E8000-memory.dmp

                    memory/1956-5233-0x0000000006840000-0x0000000006848000-memory.dmp

                    memory/1956-5234-0x0000000006990000-0x00000000069A2000-memory.dmp

                    memory/1956-5232-0x0000000006410000-0x0000000006426000-memory.dmp

                    memory/1956-5236-0x00000000068C0000-0x00000000068D0000-memory.dmp

                    memory/1956-5235-0x0000000006860000-0x0000000006868000-memory.dmp

                    memory/1956-5238-0x00000000068D0000-0x00000000068DA000-memory.dmp

                    memory/1956-5237-0x0000000006AA0000-0x0000000006B32000-memory.dmp

                    memory/1956-5239-0x0000000006910000-0x0000000006918000-memory.dmp

                    memory/1956-5240-0x0000000006920000-0x000000000692C000-memory.dmp

                    memory/1956-5243-0x0000000006950000-0x0000000006962000-memory.dmp

                    memory/1956-5241-0x0000000006940000-0x0000000006948000-memory.dmp

                    memory/1956-5244-0x0000000007CE0000-0x000000000820C000-memory.dmp

                    memory/1956-5245-0x0000000008240000-0x000000000824C000-memory.dmp

                    memory/1956-5246-0x0000000008260000-0x000000000826C000-memory.dmp

                    memory/1956-5247-0x0000000008270000-0x000000000827C000-memory.dmp

                    memory/1956-5248-0x0000000008290000-0x000000000829C000-memory.dmp

                    memory/1956-5249-0x0000000008630000-0x0000000008638000-memory.dmp

                    memory/1956-5254-0x00000000086A0000-0x00000000086AA000-memory.dmp

                    memory/1956-5255-0x00000000086B0000-0x00000000086BC000-memory.dmp

                    memory/1956-5253-0x0000000008690000-0x0000000008698000-memory.dmp

                    memory/1956-5252-0x0000000008680000-0x0000000008688000-memory.dmp

                    memory/1956-5251-0x0000000008650000-0x000000000865E000-memory.dmp

                    memory/1956-5250-0x0000000008640000-0x000000000864A000-memory.dmp

                    memory/1956-5258-0x00000000086E0000-0x0000000008746000-memory.dmp

                    memory/1956-5259-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-6842-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-7051-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-0-0x0000000005260000-0x0000000005270000-memory.dmp

                    memory/1956-1-0x0000000005530000-0x00000000057E8000-memory.dmp

                    memory/2596-9379-0x0000000005030000-0x0000000005052000-memory.dmp

                    memory/2596-9380-0x0000000005820000-0x0000000005886000-memory.dmp

                    memory/2596-9689-0x0000000005900000-0x0000000005C54000-memory.dmp