Analysis

  • max time kernel
    134s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 11:26

General

  • Target
    15c730b69a961a70a764d6c103c8103d.exe
  • Size 2.8MB
  • Sample240602-njt8pscc95
  • SHA256 09bbdf5b842a244123b81ba715cd80776f83fcff31994a07376112e3524135c5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • DcRat

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

  • Process spawned unexpected child process 36 IoCs

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

  • UAC bypass 3 TTPs 6 IoCs
  • DCRat payload 2 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 6 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 36 IoCs

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

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 6 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\15c730b69a961a70a764d6c103c8103d.exe
    "C:\Users\Admin\AppData\Local\Temp\15c730b69a961a70a764d6c103c8103d.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Hyperprovider\bE4uo01WJ5U.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Hyperprovider\OO78aMqZUi.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2128
        • C:\Hyperprovider\hyperperfCrt.exe
          "C:\Hyperprovider\hyperperfCrt.exe"
          4⤵
          • UAC bypass
          • Checks computer location settings
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • 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
          • System policy modification
          PID:2980
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\PZ0xuLrcDj.bat"
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:2396
            • C:\Windows\system32\w32tm.exe
              w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
              6⤵
                PID:1992
              • C:\Program Files\WindowsPowerShell\Modules\taskhostw.exe
                "C:\Program Files\WindowsPowerShell\Modules\taskhostw.exe"
                6⤵
                • UAC bypass
                • Executes dropped EXE
                • Checks whether UAC is enabled
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • System policy modification
                PID:5004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\Idle.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2004
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Users\Default User\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4508
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\Idle.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4260
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3232
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1984
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3584
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Program Files\Uninstall Information\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2384
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4980
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Program Files\Uninstall Information\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4048
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3468
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2456
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2540
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Windows\SysWOW64\fi-FI\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1012
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\SysWOW64\fi-FI\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3756
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Windows\SysWOW64\fi-FI\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3648
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2284
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecapp" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4484
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "unsecappu" /sc MINUTE /mo 13 /tr "'C:\Recovery\WindowsRE\unsecapp.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1028
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 9 /tr "'C:\Program Files\Google\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2044
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Google\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4972
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Program Files\Google\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Hyperprovider\services.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:516
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Hyperprovider\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4940
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Hyperprovider\services.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2332
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 5 /tr "'C:\Program Files\WindowsPowerShell\Modules\taskhostw.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3520
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Program Files\WindowsPowerShell\Modules\taskhostw.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3144
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Program Files\WindowsPowerShell\Modules\taskhostw.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:2428
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Windows\Provisioning\Packages\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:824
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\Provisioning\Packages\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:876
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Windows\Provisioning\Packages\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1548
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3712
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3152
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:3112
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Hyperprovider\TextInputHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:4976
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Hyperprovider\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:1592
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 9 /tr "'C:\Hyperprovider\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Creates scheduled task(s)
      PID:692

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          OO78aMqZUi.bat

          • Path C:\Hyperprovider\OO78aMqZUi.bat
          • Size 35B
          • SHA256 a1bf4281d5264e880cfd2797128bf3c2580cc932e25b6b0b11231ed82fae10ce
          • MD5 SHA1 SHA512

          bE4uo01WJ5U.vbe

          • Path C:\Hyperprovider\bE4uo01WJ5U.vbe
          • Size 200B
          • SHA256 623dc862c3925aa7940e863a34fd1aa15be6f9a50a012c3a855327aadb55bc64
          • MD5 SHA1 SHA512

          hyperperfCrt.exe

          • Path C:\Hyperprovider\hyperperfCrt.exe
          • Size 2.5MB
          • SHA256 32f71ef21a67f318a02518229fa4db7587b6bf021544df3082dcf888c4e49fad
          • MD5 SHA1 SHA512 SSDEEP

          PZ0xuLrcDj.bat

          • Path C:\Users\Admin\AppData\Local\Temp\PZ0xuLrcDj.bat
          • Size 221B
          • SHA256 7a76599a94f2dd844141ad28dd165bb18f3b58c03d8d796e7d630aec76116230
          • MD5 SHA1 SHA512

          memory/2980-17-0x0000000001820000-0x0000000001828000-memory.dmp

          memory/2980-22-0x000000001C110000-0x000000001C166000-memory.dmp

          memory/2980-15-0x0000000001800000-0x000000000181C000-memory.dmp

          memory/2980-19-0x0000000003150000-0x0000000003158000-memory.dmp

          memory/2980-18-0x0000000003130000-0x0000000003146000-memory.dmp

          memory/2980-20-0x0000000003180000-0x000000000318C000-memory.dmp

          memory/2980-13-0x0000000000C60000-0x0000000000EE0000-memory.dmp

          memory/2980-16-0x000000001C0C0000-0x000000001C110000-memory.dmp

          memory/2980-21-0x0000000003160000-0x000000000316A000-memory.dmp

          memory/2980-14-0x0000000001690000-0x0000000001698000-memory.dmp

          memory/2980-23-0x0000000003170000-0x000000000317C000-memory.dmp

          memory/2980-24-0x00000000031A0000-0x00000000031B2000-memory.dmp

          memory/2980-25-0x000000001CA70000-0x000000001CF98000-memory.dmp

          memory/2980-26-0x000000001C160000-0x000000001C16E000-memory.dmp

          memory/2980-27-0x000000001C170000-0x000000001C17C000-memory.dmp

          memory/2980-12-0x00007FFB42A83000-0x00007FFB42A85000-memory.dmp

          memory/5004-61-0x000000001B460000-0x000000001B472000-memory.dmp