Analysis

  • max time kernel
    99s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 03:12

General

  • Target

    JaffaCakes118_0b144d6271a0926544defae2630be10f.exe

  • Size

    1.1MB

  • MD5

    0b144d6271a0926544defae2630be10f

  • SHA1

    62ba6e83d84f11dffc48ea7742b15f3941426493

  • SHA256

    080aa2ae09ce367b0e01fad94ad61eabdba7b250714632fdfae1332ee593bab5

  • SHA512

    8dbc6f532e4e81957acb1b6165bde7b9d468ca5b540b4ae7524f959264181c41631301606f82c3bae2352d48b2a11a8fd76d22d4c6e580f432d8d33c9e9aab36

  • SSDEEP

    24576:TE9h8YY4mB7WnMSTdTvX+5pdKj30HZQHEG:TeGYDmBcBpvEpdKj3W/

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 8 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 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 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).

  • Program crash 1 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.

  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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_0b144d6271a0926544defae2630be10f.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4808
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe"
      2⤵
        PID:5116
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe"
        2⤵
          PID:4044
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe"
          2⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4480
          • C:\Users\Admin\AppData\Local\Temp\savesbrokerDriverSavesbroker.exe
            "C:\Users\Admin\AppData\Local\Temp\savesbrokerDriverSavesbroker.exe"
            3⤵
            • 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:3800
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\C1rEV5Qez5.bat"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:2780
              • C:\Windows\system32\chcp.com
                chcp 65001
                5⤵
                  PID:1732
                • C:\Windows\system32\w32tm.exe
                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                  5⤵
                    PID:1060
                  • C:\Windows\System32\pdh\lsass.exe
                    "C:\Windows\System32\pdh\lsass.exe"
                    5⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1384
              • C:\Users\Admin\AppData\Local\Temp\FPS Booster 2.0.7.exe
                "C:\Users\Admin\AppData\Local\Temp\FPS Booster 2.0.7.exe"
                3⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                PID:1176
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 968
              2⤵
              • Program crash
              PID:1612
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4808 -ip 4808
            1⤵
              PID:5040
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Windows\System32\pdh\lsass.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3508
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "savesbrokerDriverSavesbroker" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\de-DE\savesbrokerDriverSavesbroker.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:2512
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "upfc" /sc ONLOGON /tr "'C:\Documents and Settings\upfc.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3456
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\PerfLogs\services.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4592
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "SearchApp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\SearchApp.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:2844
            • 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⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3948
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "JaffaCakes118_0b144d6271a0926544defae2630be10f" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\wct6215\JaffaCakes118_0b144d6271a0926544defae2630be10f.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:2812
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Users\Admin\Pictures\Saved Pictures\System.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1288

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\C1rEV5Qez5.bat

              Filesize

              209B

              MD5

              22988533b79b950241fee8df63f8666f

              SHA1

              f968e7937efdfd6094917da31dc3544fa2dd3310

              SHA256

              88ba009d3cfe4f65118f7f0a285b0af497234a1859b879bc3f18c8e92d9f8749

              SHA512

              40bd4aa1c64eb183429cf73d38e6ef9c173956d3451067ab3ffb00053a4ab958ea19896179b99f4e82ad8e00be28f724c8c1a6a4e972268864627f0bc1f24843

            • C:\Users\Admin\AppData\Local\Temp\FPS Booster 2.0.7.exe

              Filesize

              429KB

              MD5

              74be806e27a351565f2ec136dcb5232c

              SHA1

              0ec9fc48c5c290014958c05940bc340eed942e15

              SHA256

              33b5e6ff81c482b3b62f8ed847fd25e39724dc6eb6c2a3881b1004dc75c170b6

              SHA512

              0ece93924e569718eb7dca19474f2cde1199bac8ead206a01a65dcf33e7718fcc7c668d6d891dd164f011ae9fb53272003bbc5db54ebe6de62c3b01d4986dd4d

            • C:\Users\Admin\AppData\Local\Temp\nsvA1DE.tmp\System.dll

              Filesize

              11KB

              MD5

              bf712f32249029466fa86756f5546950

              SHA1

              75ac4dc4808ac148ddd78f6b89a51afbd4091c2e

              SHA256

              7851cb12fa4131f1fee5de390d650ef65cac561279f1cfe70ad16cc9780210af

              SHA512

              13f69959b28416e0b8811c962a49309dca3f048a165457051a28a3eb51377dcaf99a15e86d7eee8f867a9e25ecf8c44da370ac8f530eeae7b5252eaba64b96f4

            • C:\Users\Admin\AppData\Local\Temp\nsvA1DE.tmp\nsDialogs.dll

              Filesize

              9KB

              MD5

              4ccc4a742d4423f2f0ed744fd9c81f63

              SHA1

              704f00a1acc327fd879cf75fc90d0b8f927c36bc

              SHA256

              416133dd86c0dff6b0fcaf1f46dfe97fdc85b37f90effb2d369164a8f7e13ae6

              SHA512

              790c5eb1f8b297e45054c855b66dfc18e9f3f1b1870559014dbefa3b9d5b6d33a993a9e089202e70f51a55d859b74e8605c6f633386fd9189b6f78941bf1bfdb

            • C:\Users\Admin\AppData\Local\Temp\savesbrokerDriverSavesbroker.exe

              Filesize

              572KB

              MD5

              222edc84e2d32948f2639554b23e7b04

              SHA1

              22cedf83a69b08259db3c2f3618df067dd7c7522

              SHA256

              55ab1b21734f31815058fa1e2841e8b62e6e4f04e635a4b51ebea3fde646e920

              SHA512

              95dd51cf8be6461955b867b853d58eab7bf6ac363e9f99f5c8c8f13046daa373ed845db3531e9f765515e43f8955955ec4ea83f19807a2b3c04f2c1f6a0c6855

            • memory/1384-76-0x000000001ADD0000-0x000000001ADDA000-memory.dmp

              Filesize

              40KB

            • memory/1384-75-0x000000001ADC0000-0x000000001ADCC000-memory.dmp

              Filesize

              48KB

            • memory/3800-30-0x00007FF8DBA03000-0x00007FF8DBA05000-memory.dmp

              Filesize

              8KB

            • memory/3800-33-0x0000000000FC0000-0x0000000001056000-memory.dmp

              Filesize

              600KB

            • memory/4480-34-0x0000000000400000-0x00000000004C5000-memory.dmp

              Filesize

              788KB

            • memory/4480-6-0x0000000000400000-0x00000000004C5000-memory.dmp

              Filesize

              788KB

            • memory/4480-8-0x0000000000400000-0x00000000004C5000-memory.dmp

              Filesize

              788KB

            • memory/4480-10-0x0000000000400000-0x00000000004C5000-memory.dmp

              Filesize

              788KB

            • memory/4808-9-0x0000000003420000-0x0000000003428000-memory.dmp

              Filesize

              32KB

            • memory/4808-4-0x0000000005B90000-0x0000000005C54000-memory.dmp

              Filesize

              784KB

            • memory/4808-3-0x00000000744D0000-0x0000000074C80000-memory.dmp

              Filesize

              7.7MB

            • memory/4808-2-0x0000000005AF0000-0x0000000005B8C000-memory.dmp

              Filesize

              624KB

            • memory/4808-49-0x00000000744D0000-0x0000000074C80000-memory.dmp

              Filesize

              7.7MB

            • memory/4808-1-0x0000000000F60000-0x000000000107A000-memory.dmp

              Filesize

              1.1MB

            • memory/4808-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

              Filesize

              4KB

            • memory/4808-5-0x0000000006300000-0x00000000068A4000-memory.dmp

              Filesize

              5.6MB