Analysis

  • max time kernel
    35s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 02:09

General

  • Target
    x425da171a3cde63b7f9fec8de1bf4a8ed05c5f1050ae34bca27d42edb3848de9.exe
  • Size 1.7MB
  • Sample260709-cljdfabx7j
  • SHA256 425da171a3cde63b7f9fec8de1bf4a8ed05c5f1050ae34bca27d42edb3848de9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DcRat 28 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 27 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 4 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 1 IoCs
  • 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 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 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\x425da171a3cde63b7f9fec8de1bf4a8ed05c5f1050ae34bca27d42edb3848de9.exe
    "C:\Users\Admin\AppData\Local\Temp\x425da171a3cde63b7f9fec8de1bf4a8ed05c5f1050ae34bca27d42edb3848de9.exe"
    1⤵
    • Family: DcRat
    • Modifies WinLogon for persistence
    • UAC bypass
    • 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:1464
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3312
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1848
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Users\Public\Libraries\smss.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1824
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Users\Public\Libraries\smss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4428
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Users\Public\Libraries\smss.exe'" /rl HIGHEST /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4872
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "ShellHostS" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Downloads\ShellHost.exe'" /f
    1⤵
    • Family: DcRat
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2648
  • C:\Recovery\WindowsRE\StartMenuExperienceHost.exe
    "C:\Recovery\WindowsRE\StartMenuExperienceHost.exe"
    1⤵
      PID:4928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "ShellHost" /sc ONLOGON /tr "'C:\Users\Public\Downloads\ShellHost.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 "ShellHostS" /sc MINUTE /mo 11 /tr "'C:\Users\Public\Downloads\ShellHost.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2392
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\Users\Default\AppData\spoolsv.exe'" /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1740
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Default\AppData\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5132
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 9 /tr "'C:\Users\Default\AppData\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1088
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Start Menu\WUDFHost.exe'" /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5496
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\Users\Admin\Start Menu\WUDFHost.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5828
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\Start Menu\WUDFHost.exe'" /rl HIGHEST /f
      1⤵
      • Family: DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5700
    • C:\Users\Public\Libraries\smss.exe
      "C:\Users\Public\Libraries\smss.exe"
      1⤵
        PID:5656
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Users\Admin\dllhost.exe'" /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2116
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Admin\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3508
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2316
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ShellHostS" /sc MINUTE /mo 12 /tr "'C:\Windows\DiagTrack\Scenarios\ShellHost.exe'" /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1396
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ShellHost" /sc ONLOGON /tr "'C:\Windows\DiagTrack\Scenarios\ShellHost.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:6804
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ShellHostS" /sc MINUTE /mo 8 /tr "'C:\Windows\DiagTrack\Scenarios\ShellHost.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:6536
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Default\RuntimeBroker.exe'" /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4108
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5412
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Users\Default\RuntimeBroker.exe'" /rl HIGHEST /f
        1⤵
        • Family: DcRat
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4732
      • C:\Users\Default\RuntimeBroker.exe
        "C:\Users\Default\RuntimeBroker.exe"
        1⤵
          PID:3344
        • C:\Windows\DiagTrack\Scenarios\ShellHost.exe
          "C:\Windows\DiagTrack\Scenarios\ShellHost.exe"
          1⤵
            PID:6152
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\ctfmon.exe'" /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:6524
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "ctfmon" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\ctfmon.exe'" /rl HIGHEST /f
            1⤵
            • Family: DcRat
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:2672
          • C:\Users\Admin\Start Menu\WUDFHost.exe
            "C:\Users\Admin\Start Menu\WUDFHost.exe"
            1⤵
              PID:6488
            • C:\Users\Admin\dllhost.exe
              "C:\Users\Admin\dllhost.exe"
              1⤵
                PID:5152
              • C:\Windows\system32\sihost.exe
                sihost.exe
                1⤵
                  PID:2500
                • C:\Users\Public\Downloads\ShellHost.exe
                  "C:\Users\Public\Downloads\ShellHost.exe"
                  1⤵
                    PID:3160
                  • C:\Windows\system32\schtasks.exe
                    schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\ctfmon.exe'" /rl HIGHEST /f
                    1⤵
                    • Family: DcRat
                    • Process spawned unexpected child process
                    • Scheduled Task/Job: Scheduled Task
                    PID:8052
                  • C:\Users\Default\AppData\spoolsv.exe
                    "C:\Users\Default\AppData\spoolsv.exe"
                    1⤵
                      PID:6100
                    • C:\Program Files (x86)\Common Files\Java\Java Update\ctfmon.exe
                      "C:\Program Files (x86)\Common Files\Java\Java Update\ctfmon.exe"
                      1⤵
                        PID:5716

                      Network

                            MITRE ATT&CK Enterprise v16

                            Replay Monitor

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                            Downloads

                            StartMenuExperienceHost.exe

                            • Path C:\Recovery\WindowsRE\StartMenuExperienceHost.exe
                            • Size 1.7MB
                            • SHA256 425da171a3cde63b7f9fec8de1bf4a8ed05c5f1050ae34bca27d42edb3848de9
                            • MD5 SHA1 SHA512 SSDEEP TLSH

                            memory/1464-0-0x0000000074B82000-0x0000000074B83000-memory.dmp

                            memory/1464-1-0x0000000005690000-0x000000000590C000-memory.dmp

                            memory/1464-2-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-3-0x0000000005910000-0x0000000005ECA000-memory.dmp

                            memory/1464-4-0x0000000005410000-0x000000000568A000-memory.dmp

                            memory/1464-7-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-32-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-50-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-47-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-48-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-66-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-68-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-86-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-84-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-82-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-80-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-78-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-76-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-74-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-72-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-70-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-64-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-62-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-60-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-58-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-56-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-54-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-52-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-44-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-42-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-40-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-38-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-36-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-34-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-29-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-28-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-23-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-21-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-19-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-17-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-31-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-25-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-13-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-10-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-5-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-15-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-11-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-9-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-110-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-114-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-120-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-133-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-129-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-126-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-124-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-130-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-122-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-118-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-116-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-112-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-108-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-106-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-100-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-94-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-104-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-102-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-99-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-96-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-92-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-90-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-88-0x0000000005410000-0x0000000005684000-memory.dmp

                            memory/1464-1430-0x0000000074B82000-0x0000000074B83000-memory.dmp

                            memory/1464-1440-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-5229-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-5230-0x0000000002500000-0x000000000251C000-memory.dmp

                            memory/1464-5231-0x0000000002530000-0x0000000002580000-memory.dmp

                            memory/1464-5232-0x0000000002590000-0x0000000002598000-memory.dmp

                            memory/1464-5233-0x00000000064C0000-0x00000000064D0000-memory.dmp

                            memory/1464-5234-0x0000000006520000-0x0000000006536000-memory.dmp

                            memory/1464-5235-0x0000000006500000-0x0000000006508000-memory.dmp

                            memory/1464-5236-0x0000000006550000-0x0000000006560000-memory.dmp

                            memory/1464-5237-0x0000000006590000-0x000000000659A000-memory.dmp

                            memory/1464-5238-0x00000000068C0000-0x00000000068CC000-memory.dmp

                            memory/1464-5239-0x00000000068D0000-0x00000000068E2000-memory.dmp

                            memory/1464-5240-0x0000000006900000-0x0000000006E2C000-memory.dmp

                            memory/1464-5241-0x0000000006E90000-0x0000000006E9C000-memory.dmp

                            memory/1464-5242-0x0000000006EA0000-0x0000000006EAC000-memory.dmp

                            memory/1464-5245-0x0000000007280000-0x000000000728C000-memory.dmp

                            memory/1464-5246-0x0000000007290000-0x0000000007322000-memory.dmp

                            memory/1464-5247-0x0000000007350000-0x000000000735C000-memory.dmp

                            memory/1464-5244-0x0000000007270000-0x0000000007278000-memory.dmp

                            memory/1464-5243-0x0000000007160000-0x000000000716A000-memory.dmp

                            memory/1464-5248-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-5250-0x00000000073A0000-0x0000000007406000-memory.dmp

                            memory/1464-7040-0x0000000074B70000-0x000000007532C000-memory.dmp

                            memory/1464-7662-0x0000000074B70000-0x000000007532C000-memory.dmp