Overview

overview

10

Static

static

10

17d352f187...50.exe

windows7-x64

10

17d352f187...50.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    93s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2025, 05:44

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General

  • Target
    17d352f187fbc5bfce4f52bc3f2cfd945e287446d11403e6115948080b1a9f50.exe
  • Size 1.1MB
  • Sample250128-gfc2pazjdl
  • SHA256 17d352f187fbc5bfce4f52bc3f2cfd945e287446d11403e6115948080b1a9f50
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
dcratdiscoveryinfostealerpersistencerat

Malware Config

Signatures

  • DcRat

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

    ratinfostealerdcrat
  • Dcrat family
    dcrat
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Process spawned unexpected child process 3 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.

    rat
  • 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 2 IoCs
    persistence
  • 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.

    discovery
  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 2 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\17d352f187fbc5bfce4f52bc3f2cfd945e287446d11403e6115948080b1a9f50.exe
    "C:\Users\Admin\AppData\Local\Temp\17d352f187fbc5bfce4f52bc3f2cfd945e287446d11403e6115948080b1a9f50.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\bridgeComponentCrt\nKJB6Zs08weWG.vbe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4008
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\bridgeComponentCrt\AbOXMghu6Hp1TCPLq6iDSJn8zEWjUF.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3028
        • C:\bridgeComponentCrt\Serversvc.exe
          "C:\bridgeComponentCrt\Serversvc.exe"
          4⤵
          • Modifies WinLogon for persistence
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3444
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\4lnxk7efej.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1836
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:3380
              • C:\Users\Admin\AppData\Local\dllhost.exe
                "C:/Users/Admin/AppData/Local/\dllhost.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4288
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:/Users/Admin/AppData/Local/\dllhost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:/Users/Admin/AppData/Local/\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4540
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 8 /tr "'C:/Users/Admin/AppData/Local/\dllhost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2472

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          4lnxk7efej.bat
          • Path C:\Users\Admin\AppData\Local\Temp\4lnxk7efej.bat
          • Size 206B
          • SHA256 c20127c6e105bd541451b77fcd8e6b981936aa8e9e655cac308915115f1ae451
          • MD5 SHA1 SHA512
          Submit Download

          AbOXMghu6Hp1TCPLq6iDSJn8zEWjUF.bat
          • Path C:\bridgeComponentCrt\AbOXMghu6Hp1TCPLq6iDSJn8zEWjUF.bat
          • Size 37B
          • SHA256 1a097cd2bfcd3fb225ef85d466e63e8bb6941795b7791c6e81d28b2f85d859ae
          • MD5 SHA1 SHA512
          Submit Download

          Serversvc.exe
          • Path C:\bridgeComponentCrt\Serversvc.exe
          • Size 827KB
          • SHA256 50ba49f457fa7dad0a39dbf75d14570d5308b33b1c4141e37223dda5c731f4b9
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          nKJB6Zs08weWG.vbe
          • Path C:\bridgeComponentCrt\nKJB6Zs08weWG.vbe
          • Size 225B
          • SHA256 4620c6c35769d741fdc7e3105ac2a283467817d822d9ad360149301bad0f6418
          • MD5 SHA1 SHA512
          Submit Download

          memory/3444-12-0x00007FFBE8173000-0x00007FFBE8175000-memory.dmp
          Download

          memory/3444-13-0x00000000001C0000-0x0000000000296000-memory.dmp
          Download