Analysis

  • max time kernel
    149s
  • max time network
    74s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 16:03

General

  • Target
    2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe
  • Size 1.1MB
  • Sample261014-thk7asfv3z
  • SHA256 2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: DcRat

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

  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Process spawned unexpected child process 9 IoCs

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

  • UAC bypass 3 TTPs 9 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 10 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
  • SmartAssembly .NET packer 2 IoCs

    Detects SmartAssembly .NET packer.

  • Suspicious use of SetThreadContext 5 IoCs
  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 16 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 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • System policy modification 1 TTPs 9 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\2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe
    "C:\Users\Admin\AppData\Local\Temp\2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5280
    • C:\Users\Admin\AppData\Local\Temp\2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe
      "{path}"
      2⤵
        PID:5208
      • C:\Users\Admin\AppData\Local\Temp\2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe
        "{path}"
        2⤵
        • UAC bypass
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Reads the TCP/IP host and domain name from the registry
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2380
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5656
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2012
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Windows.old\ctfmon.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5872
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\WindowsRE\fontdrvhost.exe'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4200
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\2jWrKESR9g.bat"
          3⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1008
          • C:\Windows\SysWOW64\w32tm.exe
            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2800
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              5⤵
                PID:3264
            • C:\Windows.old\ctfmon.exe
              "C:\Windows.old\ctfmon.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2808
              • C:\Windows.old\ctfmon.exe
                "{path}"
                5⤵
                • Executes dropped EXE
                PID:5720
              • C:\Windows.old\ctfmon.exe
                "{path}"
                5⤵
                • UAC bypass
                • Executes dropped EXE
                • Checks whether UAC is enabled
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • System policy modification
                PID:676
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5696
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3312
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 8 /tr "'C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:6108
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 5 /tr "'C:\Windows.old\ctfmon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1868
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ctfmon" /sc ONLOGON /tr "'C:\Windows.old\ctfmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1836
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "ctfmonc" /sc MINUTE /mo 11 /tr "'C:\Windows.old\ctfmon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3400
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3236
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5552
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\fontdrvhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2452
      • C:\Recovery\WindowsRE\fontdrvhost.exe
        "C:\Recovery\WindowsRE\fontdrvhost.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1604
        • C:\Recovery\WindowsRE\fontdrvhost.exe
          "{path}"
          2⤵
          • Executes dropped EXE
          PID:5636
        • C:\Recovery\WindowsRE\fontdrvhost.exe
          "{path}"
          2⤵
          • UAC bypass
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • System policy modification
          PID:4168
      • C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe
        "C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5928
        • C:\Program Files (x86)\Windows Defender\it-IT\wininit.exe
          "{path}"
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2996
      • C:\Windows.old\ctfmon.exe
        "C:\Windows.old\ctfmon.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5524
        • C:\Windows.old\ctfmon.exe
          "{path}"
          2⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4828

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            fontdrvhost.exe

            • Path C:\Recovery\WindowsRE\fontdrvhost.exe
            • Size 1.1MB
            • SHA256 2fbb29a74a5a403d826bc71d9ba3c934702ce3c936d192ba2e21a4f2b5994ccd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 21KB
            • SHA256 865eda015cc813f57e0c819e3909f647e94be482b754b951d1690d40bc968e14
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 21KB
            • SHA256 8234f7efbf01d43945df792bb3ef595ebc95eaf2fd0c5e5d63d820a22b88eefa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 21KB
            • SHA256 3d95bcdc701276cdeadba51af97c66236241e9a7a24a80b0eb39ba441fcf1f5f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            2jWrKESR9g.bat

            • Path C:\Users\Admin\AppData\Local\Temp\2jWrKESR9g.bat
            • Size 190B
            • SHA256 61eb996a529d620e551a4d018b70b4073b6d54cf11ce854dcc860ca2e78571e4
            • MD5 SHA1 SHA512 TLSH

            __PSScriptPolicyTest_b04m0cb2.rdd.psm1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b04m0cb2.rdd.psm1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            RCX8A3A.tmp

            • Path C:\Windows.old\RCX8A3A.tmp
            • Size 1.1MB
            • SHA256 51afed63e9b933fc6257db34bf428e8b037f46985d4a3452b28fae89b7f77c63
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2012-81-0x000000006F5B0000-0x000000006F5FC000-memory.dmp

            memory/2012-57-0x0000000005C40000-0x0000000005CA6000-memory.dmp

            memory/2012-56-0x0000000005BA0000-0x0000000005BC2000-memory.dmp

            memory/2380-27-0x0000000006A60000-0x0000000006A6E000-memory.dmp

            memory/2380-28-0x0000000006A70000-0x0000000006A7C000-memory.dmp

            memory/2380-14-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/2380-15-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/2380-16-0x0000000005ED0000-0x0000000005EEC000-memory.dmp

            memory/2380-18-0x0000000005F00000-0x0000000005F10000-memory.dmp

            memory/2380-74-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/2380-30-0x0000000006B20000-0x0000000006B86000-memory.dmp

            memory/2380-13-0x0000000000400000-0x0000000000528000-memory.dmp

            memory/2380-17-0x0000000005F50000-0x0000000005FA0000-memory.dmp

            memory/2380-20-0x0000000005F30000-0x0000000005F46000-memory.dmp

            memory/2380-21-0x0000000005FE0000-0x0000000005FF2000-memory.dmp

            memory/2380-23-0x0000000006090000-0x000000000609A000-memory.dmp

            memory/2380-22-0x0000000006050000-0x0000000006060000-memory.dmp

            memory/2380-24-0x00000000062F0000-0x00000000062FC000-memory.dmp

            memory/2380-25-0x0000000006310000-0x000000000631C000-memory.dmp

            memory/2380-26-0x0000000006330000-0x0000000006338000-memory.dmp

            memory/4200-79-0x0000000006C70000-0x0000000006C90000-memory.dmp

            memory/4200-67-0x0000000005A80000-0x0000000005A9E000-memory.dmp

            memory/4200-90-0x0000000007050000-0x00000000070E6000-memory.dmp

            memory/4200-89-0x0000000006E50000-0x0000000006E5A000-memory.dmp

            memory/4200-85-0x0000000006DE0000-0x0000000006DFA000-memory.dmp

            memory/4200-84-0x0000000007420000-0x0000000007A9C000-memory.dmp

            memory/4200-80-0x0000000006CA0000-0x0000000006D43000-memory.dmp

            memory/4200-76-0x000000006F5B0000-0x000000006F5FC000-memory.dmp

            memory/4200-75-0x0000000006A30000-0x0000000006A66000-memory.dmp

            memory/4200-62-0x00000000055E0000-0x000000000593B000-memory.dmp

            memory/4200-68-0x0000000005ED0000-0x0000000005F1C000-memory.dmp

            memory/5280-2-0x0000000005130000-0x00000000051CC000-memory.dmp

            memory/5280-12-0x000000000B5D0000-0x000000000B6F8000-memory.dmp

            memory/5280-0-0x00000000743F2000-0x00000000743F3000-memory.dmp

            memory/5280-11-0x0000000008EB0000-0x0000000008FA0000-memory.dmp

            memory/5280-19-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/5280-3-0x0000000005790000-0x0000000005D4A000-memory.dmp

            memory/5280-7-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/5280-5-0x00000000051D0000-0x00000000051DA000-memory.dmp

            memory/5280-10-0x00000000743E0000-0x0000000074B9C000-memory.dmp

            memory/5280-8-0x0000000005770000-0x000000000577E000-memory.dmp

            memory/5280-4-0x0000000005270000-0x0000000005302000-memory.dmp

            memory/5280-9-0x00000000743F2000-0x00000000743F3000-memory.dmp

            memory/5280-6-0x0000000005370000-0x00000000053C6000-memory.dmp

            memory/5280-1-0x00000000004F0000-0x000000000061C000-memory.dmp

            memory/5656-86-0x000000006F5B0000-0x000000006F5FC000-memory.dmp

            memory/5656-54-0x0000000005080000-0x00000000050B6000-memory.dmp

            memory/5656-55-0x00000000057B0000-0x0000000005DFA000-memory.dmp

            memory/5872-91-0x000000006F5B0000-0x000000006F5FC000-memory.dmp