Analysis

  • max time kernel
    48s
  • max time network
    123s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/07/2026, 02:22

General

  • Target
    xec0fffe2972959072c17aedfb71b921c9f50dc5fa617963942d68166ae0ff8ba.exe
  • Size 2.0MB
  • Sample260708-ctnccsat5q
  • SHA256 ec0fffe2972959072c17aedfb71b921c9f50dc5fa617963942d68166ae0ff8ba
  • 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.

  • Modifies WinLogon for persistence 2 TTPs 5 IoCs
  • Process spawned unexpected child process 15 IoCs

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

  • UAC bypass 3 TTPs 3 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 10 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 15 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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\xec0fffe2972959072c17aedfb71b921c9f50dc5fa617963942d68166ae0ff8ba.exe
    "C:\Users\Admin\AppData\Local\Temp\xec0fffe2972959072c17aedfb71b921c9f50dc5fa617963942d68166ae0ff8ba.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:5744
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 12 /tr "'C:\Windows\Microsoft.NET\dwm.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5712
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\Microsoft.NET\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2524
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 7 /tr "'C:\Windows\Microsoft.NET\dwm.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4228
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\sihost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1060
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihost" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3312
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sihosts" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\sihost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1468
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Videos\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5156
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Default\Videos\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3564
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 12 /tr "'C:\Users\Default\Videos\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:2884
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Documents\My Pictures\StartMenuExperienceHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5840
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHost" /sc ONLOGON /tr "'C:\Users\Admin\Documents\My Pictures\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:1512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "StartMenuExperienceHostS" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Documents\My Pictures\StartMenuExperienceHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3988
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:3472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:5512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Scheduled Task/Job: Scheduled Task
    PID:4936
  • C:\Users\Admin\Documents\My Pictures\StartMenuExperienceHost.exe
    "C:\Users\Admin\Documents\My Pictures\StartMenuExperienceHost.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:524
  • C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\sihost.exe
    "C:\Program Files (x86)\WindowsPowerShell\Configuration\Schema\sihost.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4560
  • C:\Users\Default\Videos\StartMenuExperienceHost.exe
    "C:\Users\Default\Videos\StartMenuExperienceHost.exe"
    1⤵
      PID:6920
    • C:\Windows\Microsoft.NET\dwm.exe
      "C:\Windows\Microsoft.NET\dwm.exe"
      1⤵
        PID:6388
      • C:\Recovery\WindowsRE\RuntimeBroker.exe
        "C:\Recovery\WindowsRE\RuntimeBroker.exe"
        1⤵
          PID:1980

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              StartMenuExperienceHost.exe

              • Path C:\Users\Admin\Pictures\StartMenuExperienceHost.exe
              • Size 2.0MB
              • SHA256 ec0fffe2972959072c17aedfb71b921c9f50dc5fa617963942d68166ae0ff8ba
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/5744-0-0x0000000074342000-0x0000000074343000-memory.dmp

              memory/5744-1-0x0000000005620000-0x00000000058D8000-memory.dmp

              memory/5744-2-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-3-0x00000000058E0000-0x0000000005E9A000-memory.dmp

              memory/5744-5-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-4-0x0000000005360000-0x0000000005616000-memory.dmp

              memory/5744-43-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-50-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-56-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-110-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-132-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-130-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-128-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-126-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-124-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-122-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-120-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-118-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-116-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-108-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-106-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-104-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-102-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-100-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-96-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-88-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-86-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-84-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-82-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-80-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-78-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-76-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-72-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-70-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-68-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-66-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-64-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-62-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-60-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-58-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-54-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-52-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-113-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-114-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-99-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-94-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-91-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-92-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-75-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-48-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-46-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-40-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-39-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-36-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-34-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-32-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-30-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-28-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-26-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-20-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-16-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-14-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-10-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-7-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-44-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-23-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-24-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-19-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-12-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-8-0x0000000005360000-0x0000000005611000-memory.dmp

              memory/5744-6-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-1724-0x0000000074342000-0x0000000074343000-memory.dmp

              memory/5744-1727-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-5229-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-5230-0x0000000004D30000-0x0000000004D4C000-memory.dmp

              memory/5744-5231-0x0000000004D60000-0x0000000004DB0000-memory.dmp

              memory/5744-5232-0x0000000004DC0000-0x0000000004DC8000-memory.dmp

              memory/5744-5233-0x0000000006770000-0x0000000006780000-memory.dmp

              memory/5744-5234-0x0000000006780000-0x0000000006796000-memory.dmp

              memory/5744-5235-0x00000000067C0000-0x00000000067C8000-memory.dmp

              memory/5744-5236-0x00000000067D0000-0x00000000067E2000-memory.dmp

              memory/5744-5237-0x0000000006F60000-0x0000000006F68000-memory.dmp

              memory/5744-5238-0x0000000006810000-0x0000000006820000-memory.dmp

              memory/5744-5239-0x0000000006FA0000-0x0000000007032000-memory.dmp

              memory/5744-5240-0x0000000007050000-0x000000000705A000-memory.dmp

              memory/5744-5241-0x0000000006F80000-0x0000000006F88000-memory.dmp

              memory/5744-5242-0x0000000007060000-0x000000000706C000-memory.dmp

              memory/5744-5243-0x0000000007080000-0x0000000007088000-memory.dmp

              memory/5744-5245-0x0000000007090000-0x00000000070A2000-memory.dmp

              memory/5744-5246-0x00000000070E0000-0x000000000760C000-memory.dmp

              memory/5744-5247-0x0000000007660000-0x000000000766C000-memory.dmp

              memory/5744-5249-0x0000000007690000-0x000000000769C000-memory.dmp

              memory/5744-5248-0x0000000007680000-0x000000000768C000-memory.dmp

              memory/5744-5250-0x00000000076B0000-0x00000000076BC000-memory.dmp

              memory/5744-5251-0x0000000007A60000-0x0000000007A68000-memory.dmp

              memory/5744-5254-0x0000000007AA0000-0x0000000007AA8000-memory.dmp

              memory/5744-5255-0x0000000007AB0000-0x0000000007AB8000-memory.dmp

              memory/5744-5256-0x0000000007AC0000-0x0000000007ACA000-memory.dmp

              memory/5744-5257-0x0000000007AF0000-0x0000000007AFC000-memory.dmp

              memory/5744-5258-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-5253-0x0000000007A70000-0x0000000007A7E000-memory.dmp

              memory/5744-5252-0x00000000076C0000-0x00000000076CA000-memory.dmp

              memory/5744-5260-0x0000000007B20000-0x0000000007B86000-memory.dmp

              memory/5744-7336-0x0000000074330000-0x0000000074AEC000-memory.dmp

              memory/5744-7950-0x0000000074330000-0x0000000074AEC000-memory.dmp