Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-01-2025 13:26

General

  • Target

    JaffaCakes118_a1d6722720a1d0faa60e5faaa6951e25.exe

  • Size

    2.3MB

  • MD5

    a1d6722720a1d0faa60e5faaa6951e25

  • SHA1

    8d32dba1594189b4b02632e583b2187d82564093

  • SHA256

    08daa6de7fd43737def4dbe0950db36969476afd0fc819ba03d3601a2669f838

  • SHA512

    d5a0fe3841f6fca72af1ebbb092fb32bbd4d29931dcabed881ffe6774b38a7c9595195b38655d497d214bc67f6ae962d25ec5231bad3acab98c564bf46e9fc6b

  • SSDEEP

    49152:UbA300qL5o66QwgVAVph9QBoyycpwgPGdnDq3IEPs:UbV7oh9yycFODq3vPs

Malware Config

Signatures

  • DcRat 11 IoCs

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

  • Dcrat family
  • Process spawned unexpected child process 10 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.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 10 IoCs
  • Drops file in System32 directory 13 IoCs
  • Drops file in Program Files directory 2 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 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 10 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 14 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\JaffaCakes118_a1d6722720a1d0faa60e5faaa6951e25.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a1d6722720a1d0faa60e5faaa6951e25.exe"
    1⤵
    • DcRat
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\brokerDhcp\S0tGSQFMCx6Y.vbe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\brokerDhcp\ZZ2hXACs.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2172
        • C:\brokerDhcp\brokerDhcpdriverref.exe
          "C:\brokerDhcp\brokerDhcpdriverref.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in System32 directory
          • 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:852
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\GNrI1xIskF.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:4648
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:3176
              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost\TextInputHost.exe
                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost\TextInputHost.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3012
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\JpnServiceDS\lsass.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1952
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Windows\System32\Windows.Internal.Signals\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2452
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Windows\System32\netshell\taskhostw.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2680
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\System32\authui\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\brokerDhcp\lsass.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1652
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\ProgramData\Microsoft\AppV\Setup\dwm.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3724
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Windows\System32\mfc120kor\dwm.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1916
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Mozilla Firefox\gmp-clearkey\0.1\csrss.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2884
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Windows\System32\EhStorPwdMgr\fontdrvhost.exe'" /rl HIGHEST /f
      1⤵
      • DcRat
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:660

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\GNrI1xIskF.bat

      Filesize

      268B

      MD5

      909e378765aa3beabe3cbd4aeef794b5

      SHA1

      45a4838b96123f34e5c62633822d54556655eec3

      SHA256

      fcc53531d3e961993a0578ff0497892cd751e61733affbc8f51ca51d4f4c3520

      SHA512

      0edb52373008ec70e378c92638fc67ca5e673e11469c8410876aa366aad0d3817f684da02e98864510370e09918876081d9ac9cf3ef44920f4f161f360aaf67b

    • C:\brokerDhcp\S0tGSQFMCx6Y.vbe

      Filesize

      195B

      MD5

      0272bf47a2ead1950910e1629e35e5b5

      SHA1

      74b43b7ce5697d8bfddd3ed416b03ba61b81fbac

      SHA256

      45547e2ed9186e7405f394fe1e3b58d61106b205d78c3dcbe8f80dd0c8e13fdd

      SHA512

      9a02cb88ef7e8d1ee80e4c5cb6612d933b11ce8f63c6518ebe8a58bfdbd08046666a1ebedd509ad0a1b7652d361fbb610008835a823737cb7421d81e19104465

    • C:\brokerDhcp\ZZ2hXACs.bat

      Filesize

      39B

      MD5

      7336dff7322860e242cf39fd2067a903

      SHA1

      b97bdf53351221778777388168217a736b9670bc

      SHA256

      f875da2b44bb1c16ae7ad33e3ac89f235bd1c85445672e8ee092f1a540fd4cea

      SHA512

      fb5e86ca89e961c5df3d6a0e4e6d30b8ab7f5d4445efa71e7706ce86f3201267a3bd8b45af80d8f5a694e451cd0f0d51a70954e0a5f8d6aec0ee5bc31139a687

    • C:\brokerDhcp\brokerDhcpdriverref.exe

      Filesize

      2.0MB

      MD5

      c07cdd8d27b5b968b06166ceddcfd35a

      SHA1

      419905135ad7276f36edd5654ff50643875d52b3

      SHA256

      6b350fefc7d6ca79ca3e4cef39b4e71e7459d98ef213693ae3cec2c1b1d03863

      SHA512

      01ddba53ed10452aeefde7aa2bcb289d75d5ce90fe0771183d5abc5f3a178d20b5495381084e75e858130bf31dbdd33edf82d51c96d1e4a99ee4c21bf97327ed

    • memory/852-12-0x00007FFB25413000-0x00007FFB25415000-memory.dmp

      Filesize

      8KB

    • memory/852-13-0x0000000000970000-0x0000000000B82000-memory.dmp

      Filesize

      2.1MB

    • memory/3012-43-0x0000000002A90000-0x0000000002A9E000-memory.dmp

      Filesize

      56KB

    • memory/3012-44-0x0000000002AB0000-0x0000000002B06000-memory.dmp

      Filesize

      344KB

    • memory/3012-45-0x0000000002B00000-0x0000000002B0A000-memory.dmp

      Filesize

      40KB

    • memory/3012-46-0x0000000002B30000-0x0000000002B38000-memory.dmp

      Filesize

      32KB

    • memory/3012-47-0x0000000002B40000-0x0000000002B4C000-memory.dmp

      Filesize

      48KB

    • memory/3012-48-0x0000000002B10000-0x0000000002B18000-memory.dmp

      Filesize

      32KB

    • memory/3012-49-0x0000000002B70000-0x0000000002B78000-memory.dmp

      Filesize

      32KB