Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 02:48

General

  • Target
    nexura.exe
  • Size 518KB
  • Sample260803-dapazsxbpc
  • SHA256 b319985762af88e0fb55ce4d7b992002be4cb79df0379a9e55dd8056ac710e09
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Dracula, Samurai

    Dracula aka Samurai is a stealer written in C#.

  • Detects Dracula aka Samurai Stealer payload 1 IoCs
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 14 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 TTPs 10 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Windows directory 18 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Executes a command shell one-liner 1 TTPs 4 IoCs

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

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 4 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 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.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\nexura.exe
    "C:\Users\Admin\AppData\Local\Temp\nexura.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4928
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="u]A*fFe;fA1pfW" dir=in action=allow program="C:\Windows\xdwdSystem32\Defender.exe" enable=yes & exit
      2⤵
        PID:1292
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3164
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4924
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:5072
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2516
      • C:\Windows\xdwdSystem32\Defender.exe
        "C:\Windows\xdwdSystem32\Defender.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Accesses Microsoft Outlook profiles
        • Drops file in Windows directory
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:2076
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd" /C chcp 65001 && netsh wlan show profiles | findstr All
          3⤵
          • Executes a command shell one-liner
          • System Network Configuration Discovery: Wi-Fi Discovery
          • Suspicious use of WriteProcessMemory
          PID:948
          • C:\Windows\system32\chcp.com
            chcp 65001
            4⤵
              PID:4272
            • C:\Windows\system32\netsh.exe
              netsh wlan show profiles
              4⤵
              • Loads dropped DLL
              • Event Triggered Execution: Netsh Helper DLL
              • System Network Configuration Discovery: Wi-Fi Discovery
              • Suspicious behavior: EnumeratesProcesses
              PID:4200
            • C:\Windows\system32\findstr.exe
              findstr All
              4⤵
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:1264
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd" /C chcp 65001 && netsh wlan show profiles | findstr All
            3⤵
            • Executes a command shell one-liner
            • System Network Configuration Discovery: Wi-Fi Discovery
            • Suspicious use of WriteProcessMemory
            PID:2952
            • C:\Windows\system32\chcp.com
              chcp 65001
              4⤵
                PID:708
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                4⤵
                • Loads dropped DLL
                • Event Triggered Execution: Netsh Helper DLL
                • System Network Configuration Discovery: Wi-Fi Discovery
                PID:1484
              • C:\Windows\system32\findstr.exe
                findstr All
                4⤵
                • Loads dropped DLL
                PID:4612
        • C:\Windows\Web\MalwareDef.exe
          C:\Windows\Web\MalwareDef.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4540
        • C:\Windows\xdwdSystem32\Defender.exe
          C:\Windows\xdwdSystem32\Defender.exe
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:4580
        • C:\Windows\xdwdSystem32\Defender.exe
          "C:\Windows\xdwdSystem32\Defender.exe"
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:1940
        • C:\Windows\xdwdSystem32\Defender.exe
          "C:\Windows\xdwdSystem32\Defender.exe"
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:696
        • C:\Windows\xdwdSystem32\Defender.exe
          "C:\Windows\xdwdSystem32\Defender.exe"
          1⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:3156

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              xdwd.dll

              • Path C:\Windows\xdwd.dll
              • Size 136KB
              • SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
              • MD5 SHA1 SHA512 SSDEEP TLSH

              Defender.exe

              • Path C:\Windows\xdwdSystem32\Defender.exe
              • Size 518KB
              • SHA256 b319985762af88e0fb55ce4d7b992002be4cb79df0379a9e55dd8056ac710e09
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/696-133-0x000002308F370000-0x000002308F39D000-memory.dmp

              memory/1940-123-0x0000026C675A0000-0x0000026C675CD000-memory.dmp

              memory/2076-138-0x000001FC6DA30000-0x000001FC6DAFA000-memory.dmp

              memory/2076-124-0x000001FC52F30000-0x000001FC52F5D000-memory.dmp

              memory/2076-117-0x000001FC6D8E0000-0x000001FC6D930000-memory.dmp

              memory/2076-116-0x000001FC54790000-0x000001FC547BA000-memory.dmp

              memory/3156-147-0x0000027A0F260000-0x0000027A0F28D000-memory.dmp

              memory/4540-113-0x000002032D350000-0x000002032D37D000-memory.dmp

              memory/4580-126-0x000001D31F020000-0x000001D31F04D000-memory.dmp

              memory/4928-5-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-111-0x000001DA58390000-0x000001DA583BD000-memory.dmp

              memory/4928-112-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-37-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-8-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-7-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-6-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-0-0x00007FFD38E9F000-0x00007FFD38EA0000-memory.dmp

              memory/4928-4-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-3-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-2-0x00007FFD38D10000-0x00007FFD396B4000-memory.dmp

              memory/4928-1-0x000001DA3DB90000-0x000001DA3DC18000-memory.dmp