Analysis

  • max time kernel
    113s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-02-2025 21:53

General

  • Target

    386bd2b2a1d1899d13aad65caeee2270a062d4aba942420b4c6f3772f98330b6.exe

  • Size

    1.1MB

  • MD5

    b1aef8e00d2f8831202653cdfe252500

  • SHA1

    06355ce7ff6d4703687e6bbc42453ab54ead44a4

  • SHA256

    386bd2b2a1d1899d13aad65caeee2270a062d4aba942420b4c6f3772f98330b6

  • SHA512

    66deed8db457ae1804c9b04b6009fffc15aa7d68f2aed8fec2e027f238e363b3dd7782096c2f512136a7cbf94e30f675621f62fd5fb6b4af72267b4efc9b4f76

  • SSDEEP

    24576:lR1EqyxFq++j7VH84qrBPMKg4hBBmPdBYgmZ:pE/WD4hBkPd2

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Dcrat family
  • Process spawned unexpected child process 30 IoCs

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

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Downloads MZ/PE file 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 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\386bd2b2a1d1899d13aad65caeee2270a062d4aba942420b4c6f3772f98330b6.exe
    "C:\Users\Admin\AppData\Local\Temp\386bd2b2a1d1899d13aad65caeee2270a062d4aba942420b4c6f3772f98330b6.exe"
    1⤵
    • Checks computer location settings
    • 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:4012
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\viTb1hTMbD.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3360
      • C:\Windows\system32\w32tm.exe
        w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
        3⤵
          PID:1700
        • C:\Windows\assembly\GAC_MSIL\explorer.exe
          "C:\Windows\assembly\GAC_MSIL\explorer.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4220
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:772
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2292
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\csrss.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3616
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 11 /tr "'C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\backgroundTaskHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1016
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4856
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 14 /tr "'C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\backgroundTaskHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3824
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 11 /tr "'C:\Users\Default User\MicrosoftEdgeUpdate.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:432
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MicrosoftEdgeUpdate" /sc ONLOGON /tr "'C:\Users\Default User\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3308
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3640
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Windows\assembly\GAC_MSIL\explorer.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\assembly\GAC_MSIL\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3488
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "explorere" /sc MINUTE /mo 6 /tr "'C:\Windows\assembly\GAC_MSIL\explorer.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4808
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1240
    • 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:220
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3276
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Google\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2060
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Google\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Google\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3924
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 8 /tr "'C:\Program Files\dotnet\swidtag\OfficeClickToRun.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2836
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\dotnet\swidtag\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4628
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 11 /tr "'C:\Program Files\dotnet\swidtag\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4052
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 14 /tr "'C:\Users\Public\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3556
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Users\Public\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:812
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Users\Public\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:412
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MusNotification" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4572
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "MusNotificationM" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\MusNotification.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5100
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 6 /tr "'C:\Program Files\Crashpad\reports\OfficeClickToRun.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4776
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Program Files\Crashpad\reports\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:456
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 10 /tr "'C:\Program Files\Crashpad\reports\OfficeClickToRun.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3880
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4NjAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODIxNjMwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0ODkwNTk3NTYwIi8-PC9hcHA-PC9yZXF1ZXN0Pg
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:3848

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Recovery\WindowsRE\RuntimeBroker.exe

      Filesize

      1.1MB

      MD5

      b1aef8e00d2f8831202653cdfe252500

      SHA1

      06355ce7ff6d4703687e6bbc42453ab54ead44a4

      SHA256

      386bd2b2a1d1899d13aad65caeee2270a062d4aba942420b4c6f3772f98330b6

      SHA512

      66deed8db457ae1804c9b04b6009fffc15aa7d68f2aed8fec2e027f238e363b3dd7782096c2f512136a7cbf94e30f675621f62fd5fb6b4af72267b4efc9b4f76

    • C:\Users\Admin\AppData\Local\Temp\viTb1hTMbD.bat

      Filesize

      206B

      MD5

      8728a621efc4fea362c6e48ec6fcf567

      SHA1

      9d80cafd48ee6214309b2753f8a5561b2e513f25

      SHA256

      ac9d89e4afa43b62df83293c654144eed446711badcaaf5c66181210328772e0

      SHA512

      603d4dc2eef0b7706fe8b777db81d93eae5db98e82edddaf27b605e00d9ec3a562a5b6421c6353b95b2df430b018c8ea4cb85e25ed906b69cb13b93cce0c3b15

    • memory/4012-0-0x00007FF8BD903000-0x00007FF8BD905000-memory.dmp

      Filesize

      8KB

    • memory/4012-1-0x0000000000E30000-0x0000000000F56000-memory.dmp

      Filesize

      1.1MB

    • memory/4012-2-0x00007FF8BD900000-0x00007FF8BE3C1000-memory.dmp

      Filesize

      10.8MB

    • memory/4012-3-0x0000000001720000-0x000000000173C000-memory.dmp

      Filesize

      112KB

    • memory/4012-5-0x0000000001750000-0x0000000001766000-memory.dmp

      Filesize

      88KB

    • memory/4012-4-0x000000001BB30000-0x000000001BB80000-memory.dmp

      Filesize

      320KB

    • memory/4012-32-0x00007FF8BD900000-0x00007FF8BE3C1000-memory.dmp

      Filesize

      10.8MB