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Analysis

  • max time kernel
    102s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2024, 03:16

General

  • Target

    63144ff5a65e776313c9cb44da25a200N.exe

  • Size

    608KB

  • MD5

    63144ff5a65e776313c9cb44da25a200

  • SHA1

    31e41d70fc55af771446bf4f879afbd809b6a7df

  • SHA256

    1b9e9cca2dcab6f35d56f397ad17aaf66dbdb7984834b9f8c26f094a2f0f763f

  • SHA512

    a32bbcb9b8799fc542cb1b0a5a1b6fceec3471d996fdeae965aa2a3860914fdaa4a64725f02221959d0a0a26fc13d8f23edf392baca4e04f34d0d2e6054c52cb

  • SSDEEP

    12288:jpoIY///1UFAe3kB0xazM6WZuS20IFpdO4WrzJjPt4mFBYU:CIY/YSQOjWZuWI84uJjhBY

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 30 IoCs

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

  • DCRat payload 3 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Drops file in Program Files directory 2 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 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 30 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 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\63144ff5a65e776313c9cb44da25a200N.exe
    "C:\Users\Admin\AppData\Local\Temp\63144ff5a65e776313c9cb44da25a200N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Users\Admin\AppData\Local\Temp\Nursultan alpha.exe
      "C:\Users\Admin\AppData\Local\Temp\Nursultan alpha.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2896
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Blockcontainernet\W43Bcik1fetwz8mb03Kl4Wsl.vbe"
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2500
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Blockcontainernet\AR9N8DWDPuNq5i9PvFB6SJq5vZat0J.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4312
          • C:\Blockcontainernet\reviewbroker.exe
            "C:\Blockcontainernet\reviewbroker.exe"
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4724
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\jkwEF8U9Vi.bat"
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4192
              • C:\Windows\system32\w32tm.exe
                w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                7⤵
                  PID:4520
                • C:\Users\Default\Favorites\RuntimeBroker.exe
                  "C:\Users\Default\Favorites\RuntimeBroker.exe"
                  7⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1564
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 9 /tr "'C:\Blockcontainernet\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4544
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Blockcontainernet\sppsvc.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 "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\Blockcontainernet\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2180
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WaaSMedicAgentW" /sc MINUTE /mo 10 /tr "'C:\Blockcontainernet\WaaSMedicAgent.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3956
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WaaSMedicAgent" /sc ONLOGON /tr "'C:\Blockcontainernet\WaaSMedicAgent.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4080
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "WaaSMedicAgentW" /sc MINUTE /mo 7 /tr "'C:\Blockcontainernet\WaaSMedicAgent.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:864
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3256
    • 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
      • Scheduled Task/Job: Scheduled Task
      PID:1668
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 6 /tr "'C:\Users\Default User\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1172
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4852
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4864
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3664
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 5 /tr "'C:\Blockcontainernet\cmd.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2228
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Blockcontainernet\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4568
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 7 /tr "'C:\Blockcontainernet\cmd.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4860
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Favorites\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4388
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Users\Default\Favorites\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1372
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 7 /tr "'C:\Users\Default\Favorites\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:868
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Blockcontainernet\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:720
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Blockcontainernet\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4020
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Blockcontainernet\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:436
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4964
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1848
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\TextInputHost.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:4236
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3236
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2224
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 9 /tr "'C:\Recovery\WindowsRE\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:5076
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 8 /tr "'C:\Program Files\Windows Security\BrowserCore\RuntimeBroker.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3092
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Program Files\Windows Security\BrowserCore\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3676
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Security\BrowserCore\RuntimeBroker.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:3728

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Blockcontainernet\AR9N8DWDPuNq5i9PvFB6SJq5vZat0J.bat

      Filesize

      39B

      MD5

      5d93d13cd1a016e3f5f76b5b67ce7b35

      SHA1

      f2b28b545989d846663f23febdcb80383264f248

      SHA256

      fa28c368016672804e3d1efbd51cbbd0147af38960f9d60731da9fbeb61d6439

      SHA512

      61bebca915e256db05f08bdf4847a01e682eb594fca5cf180a8f596325f14962e6e869ecc6bb0d0c64b7c441bf03795025781b7c92c503c9414767015c4302bc

    • C:\Blockcontainernet\W43Bcik1fetwz8mb03Kl4Wsl.vbe

      Filesize

      224B

      MD5

      3981990d1923b76df9db376e9d2cbbc5

      SHA1

      a07ce24994557da63deefb8a7db94054235c1993

      SHA256

      459538eb075aad8ac5fda45baabedbf7889ed2162feed9011efcb9490cff89f1

      SHA512

      b80bbdfd2e21ae5cd64e97d6841e769e7e3500d1eb17f4f76ca6a1f74e7d8cabc16ebfae12495e6dca4d488da5e9e0d82830813a20038231d2ae704604f04899

    • C:\Blockcontainernet\reviewbroker.exe

      Filesize

      829KB

      MD5

      ebec19ac8397c7016e1ca22f9f5eaf69

      SHA1

      e153837afcf24bb8a5790751fc2d4661c751f8ad

      SHA256

      d3fc1234ce59c9e43749ce9ce14e212512f9e85267aee52a569ee78e51d68c17

      SHA512

      a73065178db0117f4664de676307823ab72ea0c62ca427af12338f83a7497b6ca92b404a9df7fb81188461b43bd711e41f62d4d9e65a7f1abfd99a648ca0045c

    • C:\Users\Admin\AppData\Local\Temp\Nursultan alpha.exe

      Filesize

      1.1MB

      MD5

      e2a02eaf1de2c2750f025172adec7b3f

      SHA1

      346ccaed629d5f90f59673e4dd8bfc455e4648d2

      SHA256

      e2ceba1c620fa9167b68e137d00c94f7b19b9dc9ab23e2e0d99c7e537482add3

      SHA512

      587454f4190d91599351f490a1c9514a20b993a3da825550ea58030137d92c84a912aa51586877263e7cd85ce7a7b35fb4e15cb987f56ae21b0e866c830f363b

    • C:\Users\Admin\AppData\Local\Temp\jkwEF8U9Vi.bat

      Filesize

      209B

      MD5

      37d0760c364a22c29cd44ab5f89d4135

      SHA1

      0ef0e0c35c4db5bf580b50df7da3a1e495989d13

      SHA256

      24acd5a43b9f7eb118f820a41aea2edba26c5445c26a8e1b871f728bbe9d96f6

      SHA512

      9c0ed5371b4e8564bb605009f24b12afd7a7786ba90b44fa502c726a11e5e927381d1941f2b63433cf79f339d56f21cb84fec868e741e7a1a6101e1268cac739

    • memory/636-0-0x00007FFCB76E3000-0x00007FFCB76E5000-memory.dmp

      Filesize

      8KB

    • memory/636-1-0x0000000000FD0000-0x000000000106E000-memory.dmp

      Filesize

      632KB

    • memory/636-7-0x00007FFCB76E0000-0x00007FFCB81A1000-memory.dmp

      Filesize

      10.8MB

    • memory/636-14-0x00007FFCB76E0000-0x00007FFCB81A1000-memory.dmp

      Filesize

      10.8MB

    • memory/4724-27-0x0000000000CB0000-0x0000000000D86000-memory.dmp

      Filesize

      856KB