Analysis

  • max time kernel
    148s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    06-11-2024 22:25

General

  • Target

    ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59eN.exe

  • Size

    1.1MB

  • MD5

    bf13fac7f8484064e0b61d4930e82580

  • SHA1

    08495d92383b65f214c87a4aaed1103fe4cc7330

  • SHA256

    ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59e

  • SHA512

    cfba119bdbe539b7c64a5a9bf2581b21d6fa120154745f54bc36c1aac3ddfa555d4d01dd43c0626c2d95cd5eb0005c1c03387c853a18e8ef3d4d1c9d472ada87

  • SSDEEP

    24576:ZxU376C0skFgqIyXFnbCDQgZ8e7FRsWC9ZRHInh4j1Cf6liXwkOmpd:EPkVXFGDQoP7FRCZRonh4hfewhmpd

Malware Config

Signatures

  • DcRat

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

  • Dcrat family
  • Process spawned unexpected child process 9 IoCs

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

  • DCRat payload 11 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 4 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 20 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 64 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\ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59eN.exe
    "C:\Users\Admin\AppData\Local\Temp\ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59eN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Users\Admin\AppData\Local\Temp\ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59eN.exe
      "{path}"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2768
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59eN.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2876
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\System.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2832
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\sppsvc.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:580
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2180
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\WAYFjljOjk.bat"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:668
        • C:\Windows\SysWOW64\w32tm.exe
          w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1716
          • C:\Windows\system32\w32tm.exe
            w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
            5⤵
              PID:584
          • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
            "C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe"
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2416
            • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
              "{path}"
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2296
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\a6f6b15e-9b6e-41ad-85aa-528739a2d17e.vbs"
                6⤵
                • Loads dropped DLL
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:1780
                • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                  C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                  7⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:2580
                  • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                    "{path}"
                    8⤵
                    • Executes dropped EXE
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1236
                    • C:\Windows\SysWOW64\WScript.exe
                      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\4bd82c26-9562-40fe-8455-49dc00da9929.vbs"
                      9⤵
                      • Loads dropped DLL
                      • System Location Discovery: System Language Discovery
                      PID:2836
                      • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                        C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                        10⤵
                        • Executes dropped EXE
                        • Suspicious use of SetThreadContext
                        • System Location Discovery: System Language Discovery
                        PID:1632
                        • C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe
                          "{path}"
                          11⤵
                          • Executes dropped EXE
                          • System Location Discovery: System Language Discovery
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          PID:2176
                          • C:\Windows\SysWOW64\WScript.exe
                            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\9a1d9f04-0e10-417b-85ba-c5b639699faa.vbs"
                            12⤵
                            • System Location Discovery: System Language Discovery
                            PID:2108
                          • C:\Windows\SysWOW64\WScript.exe
                            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\0c10d729-8ddc-4d9a-b0ea-2600d08d8fdf.vbs"
                            12⤵
                            • System Location Discovery: System Language Discovery
                            PID:608
                    • C:\Windows\SysWOW64\WScript.exe
                      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\afbe0ab4-cdd4-436d-bd67-705f221f283d.vbs"
                      9⤵
                      • System Location Discovery: System Language Discovery
                      PID:2436
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\0a0e3b25-befb-4850-94e8-dc629faf879c.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:2784
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\System.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2968
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2820
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1248
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\sppsvc.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1480
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\sppsvc.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1792
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\sppsvc.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 "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe'" /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1180
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:2440
    • C:\Windows\system32\schtasks.exe
      schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 11 /tr "'C:\Recovery\1f276ee2-69f6-11ef-8b31-62cb582c238c\winlogon.exe'" /rl HIGHEST /f
      1⤵
      • Process spawned unexpected child process
      • Scheduled Task/Job: Scheduled Task
      PID:1508

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\MSOCache\All Users\{90140000-0016-0409-0000-0000000FF1CE}-C\System.exe

      Filesize

      1.1MB

      MD5

      bf13fac7f8484064e0b61d4930e82580

      SHA1

      08495d92383b65f214c87a4aaed1103fe4cc7330

      SHA256

      ce76b43210ba07925ad47c4c9953044670a94e638eafff7e1d172891b51ea59e

      SHA512

      cfba119bdbe539b7c64a5a9bf2581b21d6fa120154745f54bc36c1aac3ddfa555d4d01dd43c0626c2d95cd5eb0005c1c03387c853a18e8ef3d4d1c9d472ada87

    • C:\Users\Admin\AppData\Local\Temp\0a0e3b25-befb-4850-94e8-dc629faf879c.vbs

      Filesize

      513B

      MD5

      5e6686ec32e2eaa0aeff626a4d1f979e

      SHA1

      b593b3c3974aee14ac7048f4c4f0ab3e6b0b6274

      SHA256

      7801514e99040f0d1abb454edca98bfbe621dbc669a45f837f05f330ba633a92

      SHA512

      58d21d9925c5b4e0a2f3e2cc8bc3daaee60734da28458a517c8434bac6c6555ddc95ddc7750f5f50fb61dc45bce51316ae7bf94c5a108c9e206e1c878b93203b

    • C:\Users\Admin\AppData\Local\Temp\4bd82c26-9562-40fe-8455-49dc00da9929.vbs

      Filesize

      737B

      MD5

      b9af0c56707d3888fa9cf9c6c9dcccb8

      SHA1

      0abc29e94b1a7778613a5ce953f93b8fefc7d76b

      SHA256

      a9dcac3352ad5fe85e561ea2e1b458a0a6ebfe1f54eee6116d96f997ad8e8bbc

      SHA512

      ffac21d97a8a2be52ff4c8dc8d366d98cc1b7b769c2b8f9462dbb8ecdac0e8143f115b2a42c57c6feb54e336f6c81fa9bd167baf8abf40ae02af21bb703fde87

    • C:\Users\Admin\AppData\Local\Temp\9a1d9f04-0e10-417b-85ba-c5b639699faa.vbs

      Filesize

      737B

      MD5

      34e3f582ac4c3ae2045b8a583ff21f56

      SHA1

      1a690b851032185dbee03cba2c5cf29331c29ffc

      SHA256

      70ecd61f78c89a923cef1c0786d8d73bc5fcc2ef4299916267c8d1fc60950d31

      SHA512

      fb729a0c0caf3f2b9b7c5cb0aebdd4b01184c2627b9b4e5d7eff369a44a5ead12f261ef147e49f457475c2965b58848ae2e5d2e33c10b95e40fb2c7722cbcc9a

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

      Filesize

      226B

      MD5

      553bfe04219fcc206491b2adcdb22b0d

      SHA1

      c4b81e64a7661e0cf1229fc9bffe6a2777584c7d

      SHA256

      2bce642c158450dc63e889155bc1e9279afe360e24e51b455a5d5f73bf249db4

      SHA512

      31e8ac5cd87c2bff90df4aa881859580410bfda155359b457c2a0c6b14d1ad638c06c533e4b920245c40afa0ffd134e48b0533160e0c1e9bd7211694b19e1092

    • C:\Users\Admin\AppData\Local\Temp\a6f6b15e-9b6e-41ad-85aa-528739a2d17e.vbs

      Filesize

      737B

      MD5

      30209311a1efa9c525645c8868b2d34b

      SHA1

      4d9a9b7b1f4089a8017a87c847bfe806813fa127

      SHA256

      992c0da7a4c8e0b242d9f4a8e71b5d04e46ade0054e2520b0f187622efec59cf

      SHA512

      1859dfcc38b3bd7b07059e74630d6c98852ca66a5bea4c7015522fdfe0760ae3dc7676bcfd1a0231be52f8f782078791a892b8d4a1bb7781845d71188940c8f8

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

      Filesize

      7KB

      MD5

      d6edba1f307ec1818227b3b5cef705be

      SHA1

      971ff789a99cf7bf8177e90435aefc933e1400c3

      SHA256

      6920e94759503597c985f53aacdb15bcba4076d54ab1a7c4a7a54b718aa06a72

      SHA512

      a75bd3daeca3bd03f4deb129a6fbff6771ae548b8de11c2fa9ca9a7766b0fea3424a50308453cec56127e7cb7522358974437cc65dd8fbe3fb16e6025e1647b2

    • memory/1236-148-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/1236-150-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/1632-163-0x0000000000120000-0x000000000024C000-memory.dmp

      Filesize

      1.2MB

    • memory/2176-172-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2176-175-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2176-177-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2296-118-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2296-121-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2296-123-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2308-3-0x0000000000440000-0x0000000000452000-memory.dmp

      Filesize

      72KB

    • memory/2308-22-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2308-4-0x000000007469E000-0x000000007469F000-memory.dmp

      Filesize

      4KB

    • memory/2308-2-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2308-5-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2308-6-0x0000000005460000-0x0000000005556000-memory.dmp

      Filesize

      984KB

    • memory/2308-0-0x000000007469E000-0x000000007469F000-memory.dmp

      Filesize

      4KB

    • memory/2308-1-0x0000000000040000-0x000000000016C000-memory.dmp

      Filesize

      1.2MB

    • memory/2308-7-0x0000000005C70000-0x0000000005D9E000-memory.dmp

      Filesize

      1.2MB

    • memory/2416-109-0x0000000000D40000-0x0000000000E6C000-memory.dmp

      Filesize

      1.2MB

    • memory/2580-136-0x00000000004D0000-0x00000000004E2000-memory.dmp

      Filesize

      72KB

    • memory/2580-135-0x0000000000D40000-0x0000000000E6C000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-16-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-34-0x0000000004380000-0x000000000438C000-memory.dmp

      Filesize

      48KB

    • memory/2768-33-0x0000000004370000-0x000000000437A000-memory.dmp

      Filesize

      40KB

    • memory/2768-32-0x0000000004360000-0x000000000436C000-memory.dmp

      Filesize

      48KB

    • memory/2768-31-0x0000000004310000-0x000000000431E000-memory.dmp

      Filesize

      56KB

    • memory/2768-104-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2768-30-0x0000000004300000-0x000000000430A000-memory.dmp

      Filesize

      40KB

    • memory/2768-29-0x00000000021C0000-0x00000000021CC000-memory.dmp

      Filesize

      48KB

    • memory/2768-28-0x0000000002160000-0x0000000002172000-memory.dmp

      Filesize

      72KB

    • memory/2768-27-0x0000000002130000-0x0000000002140000-memory.dmp

      Filesize

      64KB

    • memory/2768-26-0x0000000002110000-0x0000000002126000-memory.dmp

      Filesize

      88KB

    • memory/2768-25-0x0000000001FB0000-0x0000000001FC0000-memory.dmp

      Filesize

      64KB

    • memory/2768-24-0x00000000005F0000-0x000000000060C000-memory.dmp

      Filesize

      112KB

    • memory/2768-23-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2768-10-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-12-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-13-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2768-18-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-21-0x0000000074690000-0x0000000074D7E000-memory.dmp

      Filesize

      6.9MB

    • memory/2768-20-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB

    • memory/2768-9-0x0000000000400000-0x000000000052E000-memory.dmp

      Filesize

      1.2MB