Analysis

  • max time kernel
    149s
  • max time network
    110s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/07/2026, 07:50

General

  • Target
    08945686ad13debd912ad29a63cb8e2c.exe
  • Size 1.2MB
  • Sample260716-jplrasbw9v
  • SHA256 2500305d3a21671212f9d98de0d4750cdda70afa6f55b4ea3f141932c2b9338f
  • 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
  • SmartAssembly .NET packer 1 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 3 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 3 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\08945686ad13debd912ad29a63cb8e2c.exe
    "C:\Users\Admin\AppData\Local\Temp\08945686ad13debd912ad29a63cb8e2c.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:2296
    • C:\Users\Default\Application Data\services.exe
      "C:\Users\Default\Application Data\services.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2896
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4128
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4424
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Users\Default\Application Data\services.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3772
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\Default\Application Data\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Application Data\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4656
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Templates\upfc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5296
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Users\Default\Templates\upfc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2216
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 5 /tr "'C:\Users\Default\Templates\upfc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4996
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\upfc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1844
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\upfc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3460
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Common Files\Java\Java Update\upfc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4100
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Desktop\fontdrvhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4176
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Users\Default\Desktop\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1356
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 10 /tr "'C:\Users\Default\Desktop\fontdrvhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4392
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\WUDFHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3148
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\WUDFHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1936
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WUDFHostW" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\WUDFHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1420
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3852
  • 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:5204
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4728
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1480
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\WindowsPowerShell\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4024
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\WindowsPowerShell\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5160
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 13 /tr "'C:\Users\Public\Pictures\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5144
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Public\Pictures\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 7 /tr "'C:\Users\Public\Pictures\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1132
  • C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe
    "C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5548
  • C:\Users\Default\Application Data\services.exe
    "C:\Users\Default\Application Data\services.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5100
  • C:\Recovery\WindowsRE\WUDFHost.exe
    "C:\Recovery\WindowsRE\WUDFHost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4936
  • C:\Program Files (x86)\Common Files\Java\Java Update\upfc.exe
    "C:\Program Files (x86)\Common Files\Java\Java Update\upfc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2828
  • C:\Recovery\WindowsRE\dllhost.exe
    "C:\Recovery\WindowsRE\dllhost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3712
  • C:\Users\Default\Desktop\fontdrvhost.exe
    "C:\Users\Default\Desktop\fontdrvhost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2412
  • C:\Users\Default\Templates\upfc.exe
    "C:\Users\Default\Templates\upfc.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3100
  • C:\Program Files (x86)\WindowsPowerShell\csrss.exe
    "C:\Program Files (x86)\WindowsPowerShell\csrss.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4864
  • C:\Recovery\WindowsRE\sihost.exe
    "C:\Recovery\WindowsRE\sihost.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2996
  • C:\Users\Public\Pictures\spoolsv.exe
    "C:\Users\Public\Pictures\spoolsv.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1564

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        winlogon.exe

        • Path C:\Windows\SoftwareDistribution\PostRebootEventCache.V2\winlogon.exe
        • Size 1.2MB
        • SHA256 2500305d3a21671212f9d98de0d4750cdda70afa6f55b4ea3f141932c2b9338f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2296-9-0x0000000002AF0000-0x0000000002AFA000-memory.dmp

        memory/2296-14-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-3-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-4-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-5-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-6-0x0000000001200000-0x000000000120E000-memory.dmp

        memory/2296-7-0x0000000001220000-0x000000000123C000-memory.dmp

        memory/2296-11-0x000000001BDA0000-0x000000001BDAC000-memory.dmp

        memory/2296-10-0x0000000002C70000-0x0000000002C7E000-memory.dmp

        memory/2296-0-0x00007FFCEB4CF000-0x00007FFCEB4D0000-memory.dmp

        memory/2296-2-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-13-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-8-0x000000001BC00000-0x000000001BC50000-memory.dmp

        memory/2296-16-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-17-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-18-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-22-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-23-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-24-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp

        memory/2296-1-0x0000000000740000-0x0000000000878000-memory.dmp

        memory/2296-36-0x00007FFCEB340000-0x00007FFCEBCE4000-memory.dmp