Analysis

  • max time kernel
    149s
  • max time network
    124s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/07/2026, 17:18

General

  • Target
    x15d3d6ae7b5506ef55baf5e32cf1e16d3b179e0e2edfe6a62955af662733b253.exe
  • Size 2.0MB
  • Sample260705-vvp7fsas2n
  • SHA256 15d3d6ae7b5506ef55baf5e32cf1e16d3b179e0e2edfe6a62955af662733b253
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DcRat 25 IoCs

    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 24 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • 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 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 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\x15d3d6ae7b5506ef55baf5e32cf1e16d3b179e0e2edfe6a62955af662733b253.exe
    "C:\Users\Admin\AppData\Local\Temp\x15d3d6ae7b5506ef55baf5e32cf1e16d3b179e0e2edfe6a62955af662733b253.exe"
    1⤵
    • Family: DcRat
    • 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:4432
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\ctfmon.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ctfmon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\ctfmon.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5940
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\ctfmon.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2704
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:728
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:52
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:908
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\Local Settings\dllhost.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2424
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\Local Settings\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Local Settings\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5028
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 14 /tr "'C:\Windows.old\SecurityHealthService.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3204
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthService" /sc ONLOGON /tr "'C:\Windows.old\SecurityHealthService.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 9 /tr "'C:\Windows.old\SecurityHealthService.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4580
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows NT\Accessories\services.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4224
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Program Files\Windows NT\Accessories\services.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:252
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows NT\Accessories\services.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:120
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3592
  • C:\Windows.old\SecurityHealthService.exe
    "C:\Windows.old\SecurityHealthService.exe"
    1⤵
      PID:1992
    • C:\Users\Admin\Local Settings\dllhost.exe
      "C:\Users\Admin\Local Settings\dllhost.exe"
      1⤵
        PID:3016
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2368
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4808
      • C:\Program Files\Windows NT\Accessories\services.exe
        "C:\Program Files\Windows NT\Accessories\services.exe"
        1⤵
          PID:2932
        • C:\Recovery\WindowsRE\explorer.exe
          "C:\Recovery\WindowsRE\explorer.exe"
          1⤵
            PID:1284
          • C:\Recovery\WindowsRE\ctfmon.exe
            "C:\Recovery\WindowsRE\ctfmon.exe"
            1⤵
              PID:6488
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
              1⤵
              • Family: DcRat
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:252
            • C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe
              "C:\Program Files (x86)\Microsoft.NET\RedistList\Idle.exe"
              1⤵
                PID:7828
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\spoolsv.exe'" /rl HIGHEST /f
                1⤵
                • Family: DcRat
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:6992
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 14 /tr "'C:\Windows.old\ctfmon.exe'" /f
                1⤵
                • Family: DcRat
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:4912
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "ctfmon" /sc ONLOGON /tr "'C:\Windows.old\ctfmon.exe'" /rl HIGHEST /f
                1⤵
                • Family: DcRat
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:6508
              • C:\Windows\system32\schtasks.exe
                schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 6 /tr "'C:\Windows.old\ctfmon.exe'" /rl HIGHEST /f
                1⤵
                • Family: DcRat
                • Process spawned unexpected child process
                • Scheduled Task/Job: Scheduled Task
                PID:6616

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

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                    Downloads

                    SecurityHealthService.exe

                    • Path C:\Windows.old\SecurityHealthService.exe
                    • Size 2.0MB
                    • SHA256 15d3d6ae7b5506ef55baf5e32cf1e16d3b179e0e2edfe6a62955af662733b253
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    memory/4432-0-0x0000000074472000-0x0000000074473000-memory.dmp

                    memory/4432-1-0x00000000055E0000-0x0000000005898000-memory.dmp

                    memory/4432-2-0x00000000058A0000-0x0000000005E5A000-memory.dmp

                    memory/4432-4-0x0000000005320000-0x00000000055D6000-memory.dmp

                    memory/4432-3-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-5-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-6-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-7-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-22-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-32-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-20-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-17-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-14-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-18-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-10-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-11-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-13-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-54-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-40-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-38-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-36-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-34-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-30-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-28-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-27-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-24-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-78-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-88-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-92-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-128-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-132-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-130-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-126-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-124-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-122-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-120-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-118-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-116-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-114-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-112-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-110-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-108-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-106-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-104-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-102-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-100-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-98-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-96-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-94-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-91-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-86-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-84-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-82-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-80-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-76-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-74-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-72-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-70-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-67-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-68-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-64-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-62-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-60-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-58-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-56-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-52-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-50-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-49-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-46-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-44-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-42-0x0000000005320000-0x00000000055D1000-memory.dmp

                    memory/4432-2028-0x0000000074472000-0x0000000074473000-memory.dmp

                    memory/4432-2029-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-5229-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-5230-0x0000000002C40000-0x0000000002C5C000-memory.dmp

                    memory/4432-5231-0x0000000002C70000-0x0000000002CC0000-memory.dmp

                    memory/4432-5232-0x0000000002CD0000-0x0000000002CD8000-memory.dmp

                    memory/4432-5233-0x0000000006530000-0x0000000006540000-memory.dmp

                    memory/4432-5234-0x0000000006570000-0x0000000006586000-memory.dmp

                    memory/4432-5235-0x00000000069A0000-0x00000000069A8000-memory.dmp

                    memory/4432-5236-0x0000000006AF0000-0x0000000006B02000-memory.dmp

                    memory/4432-5237-0x00000000069B0000-0x00000000069B8000-memory.dmp

                    memory/4432-5238-0x0000000006A50000-0x0000000006A60000-memory.dmp

                    memory/4432-5239-0x0000000006C10000-0x0000000006CA2000-memory.dmp

                    memory/4432-5240-0x0000000006A40000-0x0000000006A4A000-memory.dmp

                    memory/4432-5241-0x0000000006A10000-0x0000000006A18000-memory.dmp

                    memory/4432-5242-0x0000000006A70000-0x0000000006A7C000-memory.dmp

                    memory/4432-5243-0x0000000006A90000-0x0000000006A98000-memory.dmp

                    memory/4432-5245-0x0000000006AA0000-0x0000000006AB2000-memory.dmp

                    memory/4432-5246-0x0000000006CB0000-0x00000000071DC000-memory.dmp

                    memory/4432-5247-0x0000000007230000-0x000000000723C000-memory.dmp

                    memory/4432-5248-0x0000000007250000-0x000000000725C000-memory.dmp

                    memory/4432-5249-0x0000000007260000-0x000000000726C000-memory.dmp

                    memory/4432-5250-0x0000000007280000-0x000000000728C000-memory.dmp

                    memory/4432-5253-0x0000000007640000-0x000000000764E000-memory.dmp

                    memory/4432-5256-0x00000000077D0000-0x00000000077DA000-memory.dmp

                    memory/4432-5255-0x0000000007680000-0x0000000007688000-memory.dmp

                    memory/4432-5254-0x0000000007670000-0x0000000007678000-memory.dmp

                    memory/4432-5257-0x0000000007690000-0x000000000769C000-memory.dmp

                    memory/4432-5252-0x0000000007630000-0x000000000763A000-memory.dmp

                    memory/4432-5251-0x0000000007290000-0x0000000007298000-memory.dmp

                    memory/4432-5258-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-5260-0x0000000007700000-0x0000000007766000-memory.dmp

                    memory/4432-5261-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-6944-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-7417-0x0000000074460000-0x0000000074C1C000-memory.dmp

                    memory/4432-7797-0x0000000074460000-0x0000000074C1C000-memory.dmp