Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-02-2025 21:31

General

  • Target

    WmiPrvSE.exe

  • Size

    1.8MB

  • MD5

    b5c4fa68d74ab47092a46241d6b10a16

  • SHA1

    e754f10c51933c1ef98782fbf695e8f21198fe7e

  • SHA256

    20e9dafaa42a6b6122ecc150622cf8aabe7a324527df144561de5ba0b486ab2a

  • SHA512

    3ab67cb936cab9eb89bb8275309cbc5f56d7f03e554b5cc7bd54305c282b6e8a0feb4af8c1ebc7073d63c371444751c522b030748b4d57c28a768fd6cfdb5293

  • SSDEEP

    24576:xoGjZgFKRWhFSJVRNkiPmfqbvi5iqOlK565cvugnpQS2/DS7w0KksrSTkdu+vNph:xav+RxbvikJj4npQS2/DSs6YVz7sD

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 18 IoCs

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

  • 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
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 9 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 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 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\WmiPrvSE.exe
    "C:\Users\Admin\AppData\Local\Temp\WmiPrvSE.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:2976
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\FtYfu7TQyM.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5000
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:2388
        • C:\Windows\system32\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          3⤵
            PID:3900
          • C:\Windows\DiagTrack\Scenarios\MicrosoftEdgeUpdate.exe
            "C:\Windows\DiagTrack\Scenarios\MicrosoftEdgeUpdate.exe"
            3⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3864
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Mail\MicrosoftEdgeUpdate.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3668
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdate" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Mail\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4704
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Mail\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4916
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 5 /tr "'C:\Program Files\WindowsPowerShell\taskhostw.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:924
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\taskhostw.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4848
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 11 /tr "'C:\Program Files\WindowsPowerShell\taskhostw.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1000
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 8 /tr "'C:\Windows\DiagTrack\Scenarios\MicrosoftEdgeUpdate.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4836
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdate" /sc ONLOGON /tr "'C:\Windows\DiagTrack\Scenarios\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3012
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "MicrosoftEdgeUpdateM" /sc MINUTE /mo 8 /tr "'C:\Windows\DiagTrack\Scenarios\MicrosoftEdgeUpdate.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3376
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Program Files\dotnet\SppExtComObj.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4124
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\dotnet\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3720
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Program Files\dotnet\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4680
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 7 /tr "'C:\Program Files\WindowsPowerShell\Configuration\Schema\upfc.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3564
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Configuration\Schema\upfc.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:952
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "upfcu" /sc MINUTE /mo 13 /tr "'C:\Program Files\WindowsPowerShell\Configuration\Schema\upfc.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4420
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\AppData\Local\Temp\WmiPrvSE.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3880
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\WmiPrvSE.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3076
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\AppData\Local\Temp\WmiPrvSE.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4516
      • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
        "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY4ODkiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxOTM2NTgwOTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MjAwMDExMTMyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
        1⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        PID:3444

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Program Files (x86)\Windows Mail\MicrosoftEdgeUpdate.exe

        Filesize

        1.8MB

        MD5

        b5c4fa68d74ab47092a46241d6b10a16

        SHA1

        e754f10c51933c1ef98782fbf695e8f21198fe7e

        SHA256

        20e9dafaa42a6b6122ecc150622cf8aabe7a324527df144561de5ba0b486ab2a

        SHA512

        3ab67cb936cab9eb89bb8275309cbc5f56d7f03e554b5cc7bd54305c282b6e8a0feb4af8c1ebc7073d63c371444751c522b030748b4d57c28a768fd6cfdb5293

      • C:\Users\Admin\AppData\Local\Temp\FtYfu7TQyM.bat

        Filesize

        230B

        MD5

        e3b5de98cb38c10b1ab9116f2152e60d

        SHA1

        f3fe7030a07ce89e33fbb833b258e7500b6613f0

        SHA256

        0d77fddf9f1eaa37a0ccc86c686d6281d7386060835ae581bc9a9f1891ee4588

        SHA512

        4e32900ec16002d76cbac41f61f6e48d9d53a29ea06fc0a0c6112ebb29508d84936bfa38d59a9d30ac6ace9c7ba1150767828d28626f5dc9757fac6676603940

      • memory/2976-10-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-14-0x000000001B230000-0x000000001B248000-memory.dmp

        Filesize

        96KB

      • memory/2976-4-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-6-0x000000001AED0000-0x000000001AEDE000-memory.dmp

        Filesize

        56KB

      • memory/2976-7-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-9-0x000000001B210000-0x000000001B22C000-memory.dmp

        Filesize

        112KB

      • memory/2976-0-0x00007FF86A6B3000-0x00007FF86A6B5000-memory.dmp

        Filesize

        8KB

      • memory/2976-3-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-12-0x000000001B280000-0x000000001B2D0000-memory.dmp

        Filesize

        320KB

      • memory/2976-11-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-23-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-2-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-25-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-28-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-34-0x00007FF86A6B0000-0x00007FF86B171000-memory.dmp

        Filesize

        10.8MB

      • memory/2976-1-0x0000000000100000-0x00000000002D2000-memory.dmp

        Filesize

        1.8MB