Analysis

  • max time kernel
    148s
  • max time network
    114s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 07:22

General

  • Target
    108b0072f439f8b8e423d814e215645c.exe
  • Size 828KB
  • Sample260810-h7db7syscs
  • SHA256 75bceeb7380ab269e61da5b429ed794131f986ec40bbc3f065bcfd71833638c8
  • 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 11 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of WriteProcessMemory 1 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\108b0072f439f8b8e423d814e215645c.exe
    "C:\Users\Admin\AppData\Local\Temp\108b0072f439f8b8e423d814e215645c.exe"
    1⤵
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Windows.old\SecurityHealthSystray.exe
      "C:\Windows.old\SecurityHealthSystray.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4500
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystray" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3352
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3724
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 7 /tr "'C:\Program Files\Windows Defender Advanced Threat Protection\ja-JP\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:124
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files\Windows Defender Advanced Threat Protection\ja-JP\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1180
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 13 /tr "'C:\Program Files\Windows Defender Advanced Threat Protection\ja-JP\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5720
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Windows\IME\it-IT\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4780
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\IME\it-IT\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2632
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Windows\IME\it-IT\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4508
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\SecurityHealthSystray.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystray" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SecurityHealthSystray.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\SecurityHealthSystray.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:300
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Windows\Logs\NetSetup\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:52
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\Logs\NetSetup\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:708
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 9 /tr "'C:\Windows\Logs\NetSetup\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4528
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Common Files\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4852
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Common Files\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1896
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 14 /tr "'C:\Windows.old\SecurityHealthSystray.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3416
  • 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:4080
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SecurityHealthSystrayS" /sc MINUTE /mo 7 /tr "'C:\Windows.old\SecurityHealthSystray.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Windows.old\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4252
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Windows.old\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3248
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Windows.old\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5756
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 10 /tr "'C:\Users\All Users\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Users\All Users\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5040
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3260
  • C:\Windows\Logs\NetSetup\fontdrvhost.exe
    "C:\Windows\Logs\NetSetup\fontdrvhost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2784
  • C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe
    "C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5504
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Downloads\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2064
  • C:\Recovery\WindowsRE\SecurityHealthSystray.exe
    "C:\Recovery\WindowsRE\SecurityHealthSystray.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2644
  • C:\Program Files (x86)\Common Files\lsass.exe
    "C:\Program Files (x86)\Common Files\lsass.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default\Downloads\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2164
  • C:\Program Files\Windows Defender Advanced Threat Protection\ja-JP\sihost.exe
    "C:\Program Files\Windows Defender Advanced Threat Protection\ja-JP\sihost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:6116
  • C:\Windows\IME\it-IT\RuntimeBroker.exe
    "C:\Windows\IME\it-IT\RuntimeBroker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3052
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Default\Downloads\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3060
  • C:\Windows.old\SecurityHealthSystray.exe
    "C:\Windows.old\SecurityHealthSystray.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3928
  • C:\Windows.old\Idle.exe
    "C:\Windows.old\Idle.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3976
  • C:\Users\All Users\fontdrvhost.exe
    "C:\Users\All Users\fontdrvhost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2096
  • C:\Users\Default\Downloads\RuntimeBroker.exe
    "C:\Users\Default\Downloads\RuntimeBroker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4196

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        SecurityHealthSystray.exe

        • Path C:\Program Files\Windows NT\TableTextService\en-US\SecurityHealthSystray.exe
        • Size 828KB
        • SHA256 75bceeb7380ab269e61da5b429ed794131f986ec40bbc3f065bcfd71833638c8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3980-0-0x00007FFB528AF000-0x00007FFB528B0000-memory.dmp

        memory/3980-1-0x0000000000370000-0x0000000000446000-memory.dmp

        memory/3980-2-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-3-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-4-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-5-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-7-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-8-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-9-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-10-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp

        memory/3980-31-0x00007FFB52720000-0x00007FFB530C4000-memory.dmp