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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/09/2024, 14:16

General

  • Target

    Zukigiunlocker.exe

  • Size

    9.3MB

  • MD5

    483c79ecb7978584e4a025d801aa27e2

  • SHA1

    50394f5b488ec1f045f8eedbbe38d1222d5eb6f5

  • SHA256

    9d1f327a29485d68c0c288e449c0e3bd2634b78dac886775b84912c220e85c06

  • SHA512

    f7c8a884f23ec42a25551e874fa7568e7aa0e074b7816d42a585d37ea11a2883a9cf19fb82552a40446daafebad26be56ddc03223de27ad8b1f72a20fcfe1718

  • SSDEEP

    196608:iKIOsVbOk+0rasQ64lhPgh9QpxeQlEorvAI5YDTi8J4yn4:oxxOH0rVf4LPgXforYISiE4j

Score
9/10

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 64 IoCs
  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe
    "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Looks for VirtualBox Guest Additions in registry
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks for VirtualBox DLLs, possible anti-VM trick
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe
      "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe"
      2⤵
        PID:2004
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4008
        • C:\Windows\system32\certutil.exe
          certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe" MD5
          3⤵
            PID:4744
          • C:\Windows\system32\find.exe
            find /i /v "md5"
            3⤵
              PID:3288
            • C:\Windows\system32\find.exe
              find /i /v "certutil"
              3⤵
                PID:3300
            • C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe
              "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe"
              2⤵
                PID:3456
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c cls
                2⤵
                  PID:3784

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • memory/2288-0-0x0000000140000000-0x00000001417C9000-memory.dmp

                Filesize

                23.8MB

              • memory/2288-1-0x00007FFA19B30000-0x00007FFA19B32000-memory.dmp

                Filesize

                8KB

              • memory/2288-2-0x0000000140000000-0x00000001417C9000-memory.dmp

                Filesize

                23.8MB

              • memory/2288-3-0x0000000140000000-0x00000001417C9000-memory.dmp

                Filesize

                23.8MB

              • memory/2288-4-0x0000000140000000-0x00000001417C9000-memory.dmp

                Filesize

                23.8MB

              • memory/2288-5-0x00000000001F0000-0x00000000001F1000-memory.dmp

                Filesize

                4KB

              • memory/2288-8-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-10-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-11-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-13-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-15-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-17-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-21-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-20-0x0000000140000000-0x00000001417C9000-memory.dmp

                Filesize

                23.8MB

              • memory/2288-25-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-26-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-24-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-29-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-28-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-31-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-34-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-36-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-38-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-40-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-41-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-43-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-45-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-66-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-80-0x00000000033A0000-0x00000000033A1000-memory.dmp

                Filesize

                4KB

              • memory/2288-87-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-106-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-126-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-142-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-161-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-177-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-196-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB

              • memory/2288-216-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

                Filesize

                2.0MB