Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21/08/2025, 04:30

General

  • Target
    8b70fd6062da8aee2d9d63c106277bd0.exe
  • Size 2.9MB
  • Sample250821-e5aazsznt3
  • SHA256 a1f1d8797ffd930f0a16f3a1bd96b58419bb05bcd304a6e4ec2ddc14c664c83c
  • MD5 SHA1 SHA512 SSDEEP

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 27 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.

  • Executes dropped EXE 4 IoCs
  • SmartAssembly .NET packer 7 IoCs

    Detects SmartAssembly .NET packer.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 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 5 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 27 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 30 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\8b70fd6062da8aee2d9d63c106277bd0.exe
    "C:\Users\Admin\AppData\Local\Temp\8b70fd6062da8aee2d9d63c106277bd0.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:6016
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\winnet\oD8rQVDeSiHYiaA3ontqDyovYy7l.vbe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4092
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\winnet\OrY7pVa93lo2.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3472
        • C:\winnet\chainProvidernet.exe
          "C:\winnet\chainProvidernet.exe"
          4⤵
          • Executes dropped EXE
          • 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:2952
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\BVfRe8KQO0.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3052
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:3496
              • C:\Recovery\WindowsRE\conhost.exe
                "C:\Recovery\WindowsRE\conhost.exe"
                6⤵
                • Executes dropped EXE
                • Modifies registry class
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3728
                • C:\Windows\System32\WScript.exe
                  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\5904f98c-459e-4855-a721-b12babd7d0b7.vbs"
                  7⤵
                  • Suspicious use of WriteProcessMemory
                  PID:5692
                  • C:\Recovery\WindowsRE\conhost.exe
                    C:\Recovery\WindowsRE\conhost.exe
                    8⤵
                    • Executes dropped EXE
                    • Modifies registry class
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:5888
                    • C:\Windows\System32\WScript.exe
                      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\78810775-722d-4481-bd69-d35a3780dda3.vbs"
                      9⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1108
                      • C:\Recovery\WindowsRE\conhost.exe
                        C:\Recovery\WindowsRE\conhost.exe
                        10⤵
                        • Executes dropped EXE
                        • Modifies registry class
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        PID:5684
                        • C:\Windows\System32\WScript.exe
                          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\c6d22e1d-fa9e-469e-80ca-407732b1ed31.vbs"
                          11⤵
                            PID:3048
                          • C:\Windows\System32\WScript.exe
                            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\d5c6a9a0-1ec2-4d31-984a-43b2ef96f0ce.vbs"
                            11⤵
                              PID:2756
                        • C:\Windows\System32\WScript.exe
                          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\e5cf8282-e463-48d5-8762-fc54baea70de.vbs"
                          9⤵
                            PID:2740
                      • C:\Windows\System32\WScript.exe
                        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\a742ae11-c79d-4c6f-bb9f-9cace13a2a92.vbs"
                        7⤵
                          PID:2284
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 6 /tr "'C:\ecd7b64386840f62c0ab2e4490\dllhost.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4148
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\ecd7b64386840f62c0ab2e4490\dllhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1360
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\ecd7b64386840f62c0ab2e4490\dllhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4488
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 9 /tr "'C:\ecd7b64386840f62c0ab2e4490\sysmon.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:2268
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\ecd7b64386840f62c0ab2e4490\sysmon.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4516
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 7 /tr "'C:\ecd7b64386840f62c0ab2e4490\sysmon.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4088
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4632
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "conhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4656
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "conhostc" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\conhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4492
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "servicess" /sc MINUTE /mo 8 /tr "'C:\Windows\Vss\Writers\System\services.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4936
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Windows\Vss\Writers\System\services.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1204
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "servicess" /sc MINUTE /mo 12 /tr "'C:\Windows\Vss\Writers\System\services.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1072
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "chainProvidernetc" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.143.57\chainProvidernet.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:5556
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "chainProvidernet" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.143.57\chainProvidernet.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:5968
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "chainProvidernetc" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.143.57\chainProvidernet.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3876
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\ecd7b64386840f62c0ab2e4490\sppsvc.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1084
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\ecd7b64386840f62c0ab2e4490\sppsvc.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:5208
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 10 /tr "'C:\ecd7b64386840f62c0ab2e4490\sppsvc.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:5068
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Windows\INF\.NET CLR Data\0407\smss.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:5072
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Windows\INF\.NET CLR Data\0407\smss.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3124
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\Windows\INF\.NET CLR Data\0407\smss.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:800
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 13 /tr "'C:\4b80bbab5d33ff56af49c139\fontdrvhost.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1452
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\4b80bbab5d33ff56af49c139\fontdrvhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:2004
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\4b80bbab5d33ff56af49c139\fontdrvhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:1812
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\it-IT\fontdrvhost.exe'" /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3884
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\it-IT\fontdrvhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:3568
            • C:\Windows\system32\schtasks.exe
              schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\WindowsPowerShell\Modules\PowerShellGet\1.0.0.1\it-IT\fontdrvhost.exe'" /rl HIGHEST /f
              1⤵
              • Process spawned unexpected child process
              • Scheduled Task/Job: Scheduled Task
              PID:4436

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  conhost.exe.log

                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\conhost.exe.log
                  • Size 1KB
                  • SHA256 503dfd09e4cce869388e46952d967e4cf503e8dc33a7e4fdfdae9bf7471642ae
                  • MD5 SHA1 SHA512

                  5904f98c-459e-4855-a721-b12babd7d0b7.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\5904f98c-459e-4855-a721-b12babd7d0b7.vbs
                  • Size 709B
                  • SHA256 ceda2ed8dcd9af4aa40a0f090ac53781a41d6c765a2a9829bd3827639c9b9060
                  • MD5 SHA1 SHA512

                  78810775-722d-4481-bd69-d35a3780dda3.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\78810775-722d-4481-bd69-d35a3780dda3.vbs
                  • Size 709B
                  • SHA256 1acdfb5eb357ea27a8bf8bbb2336465626c2fd6addd572d6c9db56ff70180a0f
                  • MD5 SHA1 SHA512

                  BVfRe8KQO0.bat

                  • Path C:\Users\Admin\AppData\Local\Temp\BVfRe8KQO0.bat
                  • Size 198B
                  • SHA256 23fdc6df125321dfb3d79cfcbe1c3a3f1431e4241d72afd2aea20e1d250a3154
                  • MD5 SHA1 SHA512

                  a742ae11-c79d-4c6f-bb9f-9cace13a2a92.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\a742ae11-c79d-4c6f-bb9f-9cace13a2a92.vbs
                  • Size 485B
                  • SHA256 96869db52da272e3268a05edc4f9f2eb7d1a4261f886b353b66fb8a335acab90
                  • MD5 SHA1 SHA512

                  c6d22e1d-fa9e-469e-80ca-407732b1ed31.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\c6d22e1d-fa9e-469e-80ca-407732b1ed31.vbs
                  • Size 709B
                  • SHA256 02e77a072d8b817b394023c33b6fbc511ba860e262615329a2b6feede1de8ab4
                  • MD5 SHA1 SHA512

                  OrY7pVa93lo2.bat

                  • Path C:\winnet\OrY7pVa93lo2.bat
                  • Size 32B
                  • SHA256 31241f5c7f151c8331d6fc4cbdc179851189dfb0b5e402411a286dc6df203eab
                  • MD5 SHA1 SHA512

                  chainProvidernet.exe

                  • Path C:\winnet\chainProvidernet.exe
                  • Size 2.6MB
                  • SHA256 d607bfcbe22d2dd7d7a40172c2c5e1680d5d1132c8cab4b2ce51b57ca84fe997
                  • MD5 SHA1 SHA512 SSDEEP

                  oD8rQVDeSiHYiaA3ontqDyovYy7l.vbe

                  • Path C:\winnet\oD8rQVDeSiHYiaA3ontqDyovYy7l.vbe
                  • Size 195B
                  • SHA256 a6359245d69995f103070298418c0178f2006e8a625261d4237a9f8e280dc0db
                  • MD5 SHA1 SHA512

                  memory/2952-29-0x000000001C670000-0x000000001C67C000-memory.dmp

                  memory/2952-35-0x000000001C8D0000-0x000000001C8DA000-memory.dmp

                  memory/2952-20-0x000000001C440000-0x000000001C448000-memory.dmp

                  memory/2952-21-0x000000001C5C0000-0x000000001C5D0000-memory.dmp

                  memory/2952-22-0x000000001C5D0000-0x000000001C626000-memory.dmp

                  memory/2952-23-0x000000001C5A0000-0x000000001C5AC000-memory.dmp

                  memory/2952-24-0x000000001C5B0000-0x000000001C5B8000-memory.dmp

                  memory/2952-25-0x000000001C620000-0x000000001C62C000-memory.dmp

                  memory/2952-26-0x000000001C630000-0x000000001C638000-memory.dmp

                  memory/2952-27-0x000000001C640000-0x000000001C652000-memory.dmp

                  memory/2952-28-0x000000001CFC0000-0x000000001D4E8000-memory.dmp

                  memory/2952-18-0x000000001C420000-0x000000001C428000-memory.dmp

                  memory/2952-30-0x000000001C680000-0x000000001C688000-memory.dmp

                  memory/2952-32-0x000000001C6A0000-0x000000001C6AC000-memory.dmp

                  memory/2952-31-0x000000001C690000-0x000000001C69C000-memory.dmp

                  memory/2952-34-0x000000001C8C0000-0x000000001C8CC000-memory.dmp

                  memory/2952-33-0x000000001C8B0000-0x000000001C8B8000-memory.dmp

                  memory/2952-19-0x000000001C430000-0x000000001C442000-memory.dmp

                  memory/2952-38-0x000000001C900000-0x000000001C90E000-memory.dmp

                  memory/2952-37-0x000000001C8F0000-0x000000001C8F8000-memory.dmp

                  memory/2952-36-0x000000001C8E0000-0x000000001C8EE000-memory.dmp

                  memory/2952-39-0x000000001C910000-0x000000001C918000-memory.dmp

                  memory/2952-40-0x000000001C920000-0x000000001C92C000-memory.dmp

                  memory/2952-42-0x000000001C940000-0x000000001C94A000-memory.dmp

                  memory/2952-41-0x000000001C930000-0x000000001C938000-memory.dmp

                  memory/2952-17-0x000000001C400000-0x000000001C416000-memory.dmp

                  memory/2952-12-0x0000000000FA0000-0x000000000123A000-memory.dmp

                  memory/2952-13-0x0000000001BD0000-0x0000000001BEC000-memory.dmp

                  memory/2952-15-0x0000000001C00000-0x0000000001C08000-memory.dmp

                  memory/2952-16-0x00000000034C0000-0x00000000034D0000-memory.dmp

                  memory/2952-14-0x000000001C450000-0x000000001C4A0000-memory.dmp

                  memory/3728-71-0x000000001B6C0000-0x000000001B716000-memory.dmp

                  memory/3728-70-0x000000001B6B0000-0x000000001B6C2000-memory.dmp

                  memory/5888-84-0x000000001B5E0000-0x000000001B5F2000-memory.dmp