Analysis

  • max time kernel
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 21:45

General

  • Target
    0a3e2c2bd38771605cb2eeae9c8cbc62.exe
  • Size 3.0MB
  • Sample260804-1mh13ayxes
  • SHA256 a85a685e8753319479922d6098726906804dca6a518205ed70fd555c5289d743
  • 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.

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Process spawned unexpected child process 30 IoCs

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

  • Executes dropped EXE 10 IoCs
  • SmartAssembly .NET packer 2 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 30 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of WriteProcessMemory 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\0a3e2c2bd38771605cb2eeae9c8cbc62.exe
    "C:\Users\Admin\AppData\Local\Temp\0a3e2c2bd38771605cb2eeae9c8cbc62.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4136
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\bXeiwu6LjD.bat"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:2444
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:3204
        • C:\Windows\Setup\State\dwm.exe
          "C:\Windows\Setup\State\dwm.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:2816
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:412
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:200
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:208
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2752
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2832
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 8 /tr "'C:\Windows.old\SecurityHealthSystray.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1232
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthSystray" /sc ONLOGON /tr "'C:\Windows.old\SecurityHealthSystray.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5704
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 14 /tr "'C:\Windows.old\SecurityHealthSystray.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1432
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Windows\Setup\State\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4316
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\Setup\State\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3464
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\Windows\Setup\State\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4580
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\SendTo\spoolsv.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2928
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Admin\SendTo\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:860
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\SendTo\spoolsv.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5336
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3660
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4880
    • C:\Windows\Setup\State\dllhost.exe
      "C:\Windows\Setup\State\dllhost.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3324
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Photo Viewer\uk-UA\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:6008
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5572
    • C:\Recovery\WindowsRE\dllhost.exe
      "C:\Recovery\WindowsRE\dllhost.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1448
    • C:\Users\Admin\SendTo\spoolsv.exe
      "C:\Users\Admin\SendTo\spoolsv.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:780
    • C:\Program Files (x86)\Windows Photo Viewer\uk-UA\explorer.exe
      "C:\Program Files (x86)\Windows Photo Viewer\uk-UA\explorer.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:6024
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2252
    • C:\Recovery\WindowsRE\dwm.exe
      "C:\Recovery\WindowsRE\dwm.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:5528
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 7 /tr "'C:\Program Files\VideoLAN\VLC\plugins\logger\WUDFHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1776
    • C:\Windows.old\SecurityHealthSystray.exe
      "C:\Windows.old\SecurityHealthSystray.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1076
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\Program Files\VideoLAN\VLC\plugins\logger\WUDFHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3024
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 5 /tr "'C:\Program Files\VideoLAN\VLC\plugins\logger\WUDFHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5244
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Windows\Setup\State\dwm.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3320
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\Setup\State\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5800
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Windows\Setup\State\dwm.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:624
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\upfc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5072
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:940
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\upfc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5804
    • C:\Windows\Setup\State\dwm.exe
      "C:\Windows\Setup\State\dwm.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:776
    • C:\Program Files\VideoLAN\VLC\plugins\logger\WUDFHost.exe
      "C:\Program Files\VideoLAN\VLC\plugins\logger\WUDFHost.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2572
    • C:\Recovery\WindowsRE\upfc.exe
      "C:\Recovery\WindowsRE\upfc.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4528

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          bXeiwu6LjD.bat

          • Path C:\Users\Admin\AppData\Local\Temp\bXeiwu6LjD.bat
          • Size 195B
          • SHA256 5fe39ec90f61d8358c9d57fd0f339e370a32de915e9bf36e43541155002cf28a
          • MD5 SHA1 SHA512 TLSH

          dllhost.exe

          • Path C:\Windows\Setup\State\dllhost.exe
          • Size 3.0MB
          • SHA256 a85a685e8753319479922d6098726906804dca6a518205ed70fd555c5289d743
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4136-37-0x000000001C080000-0x000000001C08C000-memory.dmp

          memory/4136-24-0x0000000002B10000-0x0000000002B1C000-memory.dmp

          memory/4136-4-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-5-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-6-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-7-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-8-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-9-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-10-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-11-0x0000000001110000-0x000000000111E000-memory.dmp

          memory/4136-12-0x00000000011C0000-0x00000000011CE000-memory.dmp

          memory/4136-19-0x0000000002B00000-0x0000000002B12000-memory.dmp

          memory/4136-20-0x0000000002B30000-0x0000000002B3C000-memory.dmp

          memory/4136-31-0x000000001C020000-0x000000001C02C000-memory.dmp

          memory/4136-23-0x000000001BFA0000-0x000000001BFF6000-memory.dmp

          memory/4136-33-0x000000001C040000-0x000000001C04A000-memory.dmp

          memory/4136-27-0x0000000002CF0000-0x0000000002D02000-memory.dmp

          memory/4136-26-0x0000000002CE0000-0x0000000002CE8000-memory.dmp

          memory/4136-32-0x000000001C030000-0x000000001C03C000-memory.dmp

          memory/4136-35-0x000000001C060000-0x000000001C06E000-memory.dmp

          memory/4136-0-0x00007FF8EAB8F000-0x00007FF8EAB90000-memory.dmp

          memory/4136-36-0x000000001C070000-0x000000001C078000-memory.dmp

          memory/4136-3-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-34-0x000000001C050000-0x000000001C05E000-memory.dmp

          memory/4136-22-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

          memory/4136-30-0x000000001C010000-0x000000001C018000-memory.dmp

          memory/4136-29-0x000000001B730000-0x000000001B738000-memory.dmp

          memory/4136-28-0x000000001C540000-0x000000001CA68000-memory.dmp

          memory/4136-25-0x0000000002B20000-0x0000000002B2C000-memory.dmp

          memory/4136-21-0x0000000002CC0000-0x0000000002CC8000-memory.dmp

          memory/4136-18-0x0000000002AF0000-0x0000000002AF8000-memory.dmp

          memory/4136-17-0x0000000001220000-0x0000000001236000-memory.dmp

          memory/4136-16-0x0000000001210000-0x0000000001218000-memory.dmp

          memory/4136-15-0x0000000002C70000-0x0000000002CC0000-memory.dmp

          memory/4136-14-0x00000000011F0000-0x000000000120C000-memory.dmp

          memory/4136-13-0x00000000011E0000-0x00000000011E8000-memory.dmp

          memory/4136-43-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-44-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-45-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-46-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-2-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp

          memory/4136-1-0x0000000000590000-0x000000000089A000-memory.dmp

          memory/4136-65-0x000000001D270000-0x000000001D2EC000-memory.dmp

          memory/4136-66-0x000000001D270000-0x000000001D2EC000-memory.dmp

          memory/4136-67-0x00007FF8EAA00000-0x00007FF8EB3A4000-memory.dmp