Analysis

  • max time kernel
    36s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/06/2026, 02:27

General

  • Target
    xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe
  • Size 1.7MB
  • Sample260629-cxv7dact8j
  • SHA256 a17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8
  • 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 2 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
  • Executes dropped EXE 1 IoCs
  • 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.

  • 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 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe
    "C:\Users\Admin\AppData\Local\Temp\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe"
    1⤵
    • Family: DcRat
    • Modifies WinLogon for persistence
    • UAC bypass
    • 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:3296
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2504
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5592
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:6000
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5844
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1884
  • C:\Recovery\WindowsRE\Idle.exe
    "C:\Recovery\WindowsRE\Idle.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4844
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4696
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\smss.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2332
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\smss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4176
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4952
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2196
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2328
  • C:\Recovery\WindowsRE\smss.exe
    "C:\Recovery\WindowsRE\smss.exe"
    1⤵
      PID:2332
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8x" /sc MINUTE /mo 5 /tr "'C:\Windows\TAPI\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe'" /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8" /sc ONLOGON /tr "'C:\Windows\TAPI\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:364
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8x" /sc MINUTE /mo 9 /tr "'C:\Windows\TAPI\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:6600
    • C:\Windows\TAPI\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe
      "C:\Windows\TAPI\xa17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8.exe"
      1⤵
        PID:1240
      • C:\Recovery\WindowsRE\csrss.exe
        "C:\Recovery\WindowsRE\csrss.exe"
        1⤵
          PID:1432
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\Windows.old\sppsvc.exe'" /f
          1⤵
          • Family: DcRat
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:2012
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows.old\sppsvc.exe'" /rl HIGHEST /f
          1⤵
          • Family: DcRat
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:6988
        • C:\Windows\system32\schtasks.exe
          schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Windows.old\sppsvc.exe'" /rl HIGHEST /f
          1⤵
          • Family: DcRat
          • Process spawned unexpected child process
          • Scheduled Task/Job: Scheduled Task
          PID:3636
        • C:\Windows.old\sppsvc.exe
          "C:\Windows.old\sppsvc.exe"
          1⤵
            PID:7232
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 13 /tr "'C:\Windows.old\winlogon.exe'" /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1172
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows.old\winlogon.exe'" /rl HIGHEST /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:7584
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Windows.old\winlogon.exe'" /rl HIGHEST /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:5592
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 7 /tr "'C:\Windows\SKB\LanguageModels\SecurityHealthService.exe'" /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:6616
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "SecurityHealthService" /sc ONLOGON /tr "'C:\Windows\SKB\LanguageModels\SecurityHealthService.exe'" /rl HIGHEST /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:7108
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "SecurityHealthServiceS" /sc MINUTE /mo 10 /tr "'C:\Windows\SKB\LanguageModels\SecurityHealthService.exe'" /rl HIGHEST /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:7104

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                Idle.exe

                • Path C:\Recovery\WindowsRE\Idle.exe
                • Size 1.7MB
                • SHA256 a17232d7176424425104e50c1884f71683f8685ade42488a3dba071406664bd8
                • MD5 SHA1 SHA512 SSDEEP TLSH

                memory/3296-0-0x0000000074ED2000-0x0000000074ED3000-memory.dmp

                memory/3296-1-0x00000000054A0000-0x000000000571C000-memory.dmp

                memory/3296-2-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-3-0x0000000005720000-0x0000000005CDA000-memory.dmp

                memory/3296-5-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-6-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-4-0x0000000005210000-0x000000000548A000-memory.dmp

                memory/3296-7-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-81-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-132-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-130-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-128-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-126-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-124-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-122-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-120-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-119-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-117-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-115-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-112-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-110-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-108-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-106-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-104-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-102-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-95-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-96-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-92-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-90-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-88-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-84-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-99-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-100-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-87-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-82-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-78-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-77-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-74-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-73-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-70-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-68-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-66-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-64-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-60-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-58-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-56-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-54-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-53-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-50-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-48-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-46-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-44-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-42-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-40-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-38-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-36-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-35-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-32-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-30-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-28-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-26-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-24-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-22-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-20-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-18-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-16-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-14-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-12-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-62-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-10-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-9-0x0000000005210000-0x0000000005484000-memory.dmp

                memory/3296-1966-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-1961-0x0000000074ED2000-0x0000000074ED3000-memory.dmp

                memory/3296-5229-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-5230-0x0000000002B10000-0x0000000002B2C000-memory.dmp

                memory/3296-5231-0x0000000002B40000-0x0000000002B90000-memory.dmp

                memory/3296-5232-0x0000000002BA0000-0x0000000002BA8000-memory.dmp

                memory/3296-5233-0x00000000065F0000-0x0000000006600000-memory.dmp

                memory/3296-5234-0x0000000006650000-0x0000000006666000-memory.dmp

                memory/3296-5235-0x0000000006630000-0x0000000006638000-memory.dmp

                memory/3296-5236-0x0000000006670000-0x0000000006680000-memory.dmp

                memory/3296-5237-0x00000000066C0000-0x00000000066CA000-memory.dmp

                memory/3296-5238-0x00000000069F0000-0x00000000069FC000-memory.dmp

                memory/3296-5239-0x0000000006A00000-0x0000000006A12000-memory.dmp

                memory/3296-5240-0x0000000007D60000-0x000000000828C000-memory.dmp

                memory/3296-5241-0x0000000006A90000-0x0000000006A9C000-memory.dmp

                memory/3296-5242-0x0000000006AA0000-0x0000000006AAC000-memory.dmp

                memory/3296-5243-0x0000000006B70000-0x0000000006B7A000-memory.dmp

                memory/3296-5245-0x0000000006B80000-0x0000000006B8C000-memory.dmp

                memory/3296-5244-0x0000000006B60000-0x0000000006B68000-memory.dmp

                memory/3296-5246-0x0000000008590000-0x0000000008622000-memory.dmp

                memory/3296-5248-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-5247-0x0000000006BD0000-0x0000000006BDC000-memory.dmp

                memory/3296-5250-0x0000000008630000-0x0000000008696000-memory.dmp

                memory/3296-7039-0x0000000074EC0000-0x000000007567C000-memory.dmp

                memory/3296-7538-0x0000000074EC0000-0x000000007567C000-memory.dmp