Analysis

  • max time kernel
    133s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/07/2024, 01:47

General

  • Target
    12b1d0212363628cb57d2379017b94d6bf91029b37b2dcee592a564952855694.exe
  • Size 13.5MB
  • Sample240702-b7jqnavhrk
  • SHA256 12b1d0212363628cb57d2379017b94d6bf91029b37b2dcee592a564952855694
  • 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 33 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 8 IoCs

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

  • Executes dropped EXE 9 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 33 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 37 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\12b1d0212363628cb57d2379017b94d6bf91029b37b2dcee592a564952855694.exe
    "C:\Users\Admin\AppData\Local\Temp\12b1d0212363628cb57d2379017b94d6bf91029b37b2dcee592a564952855694.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Users\Admin\AppData\Local\Temp\hitler.exe
      "C:\Users\Admin\AppData\Local\Temp\hitler.exe"
      2⤵
      • Executes dropped EXE
      PID:4992
    • C:\Users\Admin\AppData\Local\Temp\tin.exe
      "C:\Users\Admin\AppData\Local\Temp\tin.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      PID:2920
    • C:\Users\Admin\AppData\Local\Temp\Ykraine.exe
      "C:\Users\Admin\AppData\Local\Temp\Ykraine.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1028
      • C:\Users\Admin\AppData\Local\Temp\NVIDIA Container.exe
        "C:\Users\Admin\AppData\Local\Temp\NVIDIA Container.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\NVIDIA\DisplayDriver\535.21\zajaYJ4rqwpmDK2a6yrvwdV.vbe"
          4⤵
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:1412
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\NVIDIA\DisplayDriver\535.21\mxJne99RtKqQDunPUGdos.bat" "
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1652
            • C:\NVIDIA\DisplayDriver\535.21\NVIDIA Container.exe
              "C:\NVIDIA\DisplayDriver\535.21\NVIDIA Container.exe"
              6⤵
              • 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:3264
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\HZ9NloXtmb.bat"
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:704
                • C:\Windows\system32\w32tm.exe
                  w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                  8⤵
                    PID:532
                  • C:\NVIDIA\DisplayDriver\535.21\spoolsv.exe
                    "C:\NVIDIA\DisplayDriver\535.21\spoolsv.exe"
                    8⤵
                    • Executes dropped EXE
                    • Suspicious use of AdjustPrivilegeToken
                    PID:748
      • C:\Users\Admin\AppData\Local\Temp\Стоны.exe
        "C:\Users\Admin\AppData\Local\Temp\Стоны.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4956
        • C:\Users\Admin\AppData\Local\Temp\NVIDIA Container.exe
          "C:\Users\Admin\AppData\Local\Temp\NVIDIA Container.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:228
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\NVIDIA\DisplayDriver\535.21\zajaYJ4rqwpmDK2a6yrvwdV.vbe"
            4⤵
            • Checks computer location settings
            • Suspicious use of WriteProcessMemory
            PID:4116
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\NVIDIA\DisplayDriver\535.21\mxJne99RtKqQDunPUGdos.bat" "
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4832
              • C:\NVIDIA\DisplayDriver\535.21\NVIDIA Container.exe
                "C:\NVIDIA\DisplayDriver\535.21\NVIDIA Container.exe"
                6⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:2348
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=996,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=3968 /prefetch:8
      1⤵
        PID:2940
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 14 /tr "'C:\Users\Default User\SppExtComObj.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4352
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Users\Default User\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1544
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4824
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 5 /tr "'C:\NVIDIA\DisplayDriver\535.21\spoolsv.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2756
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\NVIDIA\DisplayDriver\535.21\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3172
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\NVIDIA\DisplayDriver\535.21\spoolsv.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2096
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\NVIDIA\DisplayDriver\535.21\winlogon.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3656
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\NVIDIA\DisplayDriver\535.21\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4516
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 7 /tr "'C:\NVIDIA\DisplayDriver\535.21\winlogon.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:212
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Defender\SppExtComObj.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:5032
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Program Files\Windows Defender\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1152
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Defender\SppExtComObj.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1648
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 14 /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\TextInputHost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4712
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "TextInputHost" /sc ONLOGON /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\TextInputHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2144
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "TextInputHostT" /sc MINUTE /mo 5 /tr "'C:\Program Files\Google\Chrome\Application\SetupMetrics\TextInputHost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2320
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Adobe\wininit.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1452
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files (x86)\Adobe\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3524
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Adobe\wininit.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2104
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WaaSMedicAgentW" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows Media Player\WaaSMedicAgent.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:1492
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WaaSMedicAgent" /sc ONLOGON /tr "'C:\Program Files\Windows Media Player\WaaSMedicAgent.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:2312
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "WaaSMedicAgentW" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Media Player\WaaSMedicAgent.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4444
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "NVIDIA ContainerN" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\NVIDIA Container.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4608
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "NVIDIA Container" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\NVIDIA Container.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3692
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "NVIDIA ContainerN" /sc MINUTE /mo 6 /tr "'C:\Recovery\WindowsRE\NVIDIA Container.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3240
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 5 /tr "'C:\Recovery\WindowsRE\msedge.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:816
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedge" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\msedge.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4092
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "msedgem" /sc MINUTE /mo 8 /tr "'C:\Recovery\WindowsRE\msedge.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3964
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\NVIDIA\DisplayDriver\535.21\lsass.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4372
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\NVIDIA\DisplayDriver\535.21\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3048
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\NVIDIA\DisplayDriver\535.21\lsass.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:4040
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Defender\dllhost.exe'" /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:436
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3432
      • C:\Windows\system32\schtasks.exe
        schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Defender\dllhost.exe'" /rl HIGHEST /f
        1⤵
        • Process spawned unexpected child process
        • Scheduled Task/Job: Scheduled Task
        PID:3744
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x3c4 0x3bc
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1412

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            NVIDIA Container.exe

            • Path C:\NVIDIA\DisplayDriver\535.21\NVIDIA Container.exe
            • Size 1.4MB
            • SHA256 b495e22042b08f27b690da18986ec74d5054a65d05d5cf41fdecd5751482ccbd
            • MD5 SHA1 SHA512 SSDEEP

            mxJne99RtKqQDunPUGdos.bat

            • Path C:\NVIDIA\DisplayDriver\535.21\mxJne99RtKqQDunPUGdos.bat
            • Size 53B
            • SHA256 0385dbf94fc27705560cf0b6b04e9a37181db486ee8f7573c5ad2217d18f4ca0
            • MD5 SHA1 SHA512

            zajaYJ4rqwpmDK2a6yrvwdV.vbe

            • Path C:\NVIDIA\DisplayDriver\535.21\zajaYJ4rqwpmDK2a6yrvwdV.vbe
            • Size 225B
            • SHA256 d3bf5c54de984dd2d1d779494deb8a995cc062eb5f25c465d0de78d99b8cc52b
            • MD5 SHA1 SHA512

            NVIDIA Container.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\NVIDIA Container.exe.log
            • Size 1KB
            • SHA256 29f5645ac14353ac460858f52c856548f3aeb144b09eef672a6b4849bafe742e
            • MD5 SHA1 SHA512

            HZ9NloXtmb.bat

            • Path C:\Users\Admin\AppData\Local\Temp\HZ9NloXtmb.bat
            • Size 207B
            • SHA256 3984b5cf9ce26fa8b317837d38e04b38cd0035187e60b02c21355177a63dda37
            • MD5 SHA1 SHA512

            NVIDIA Container.exe

            • Path C:\Users\Admin\AppData\Local\Temp\NVIDIA Container.exe
            • Size 1.8MB
            • SHA256 67942630366d114efa35f3f4a79741a4a4eb2c3b0c8ffaac07af527f84d4489a
            • MD5 SHA1 SHA512 SSDEEP

            Ykraine.exe

            • Path C:\Users\Admin\AppData\Local\Temp\Ykraine.exe
            • Size 1.4MB
            • SHA256 bae4b959e9f74d9d085067b57a805654c86cc45f8c7cd32b9711874504ae59dd
            • MD5 SHA1 SHA512 SSDEEP

            hitler.exe

            • Path C:\Users\Admin\AppData\Local\Temp\hitler.exe
            • Size 10.4MB
            • SHA256 1b2a026beda12eff88e2397931018031e4358de05aa449e3441434e6cf5dad6c
            • MD5 SHA1 SHA512 SSDEEP

            tin.exe

            • Path C:\Users\Admin\AppData\Local\Temp\tin.exe
            • Size 439KB
            • SHA256 c9fffa589040d8a6d22285255604948ff3bb3efa7077c776b6b09272bc293b7d
            • MD5 SHA1 SHA512 SSDEEP

            Стоны.exe

            • Path C:\Users\Admin\AppData\Local\Temp\Стоны.exe
            • Size 1.5MB
            • SHA256 8e9e6d72b2a39b62c7341bdc0f529a070f25b2c33bfefe5b6cc6e5d3c86590e9
            • MD5 SHA1 SHA512 SSDEEP

            memory/1028-43-0x0000000000CA0000-0x0000000000E18000-memory.dmp

            memory/2920-44-0x0000000000E50000-0x0000000000EED000-memory.dmp

            memory/3264-81-0x0000000002700000-0x0000000002710000-memory.dmp

            memory/3264-83-0x00000000028C0000-0x00000000028CE000-memory.dmp

            memory/3264-84-0x00000000028D0000-0x00000000028DC000-memory.dmp

            memory/3264-82-0x00000000028B0000-0x00000000028BE000-memory.dmp

            memory/3264-79-0x000000001B3E0000-0x000000001B430000-memory.dmp

            memory/3264-80-0x00000000026E0000-0x00000000026F6000-memory.dmp

            memory/3264-77-0x00000000005D0000-0x000000000073A000-memory.dmp

            memory/3264-78-0x00000000026B0000-0x00000000026CC000-memory.dmp

            memory/4892-0-0x00007FF94B923000-0x00007FF94B925000-memory.dmp

            memory/4892-1-0x00000000009E0000-0x000000000176A000-memory.dmp

            memory/4892-4-0x00007FF94B920000-0x00007FF94C3E1000-memory.dmp

            memory/4892-50-0x00007FF94B920000-0x00007FF94C3E1000-memory.dmp

            memory/4956-49-0x0000000000E40000-0x0000000000FC8000-memory.dmp

            memory/4992-68-0x00007FF94B920000-0x00007FF94C3E1000-memory.dmp

            memory/4992-40-0x0000000000670000-0x00000000010D0000-memory.dmp

            memory/4992-34-0x00007FF94B920000-0x00007FF94C3E1000-memory.dmp