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Analysis

  • max time kernel
    118s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 46 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 36 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:1992
    • C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe
      "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe"
      2⤵
        PID:2676
      • 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:2852
        • C:\Windows\system32\certutil.exe
          certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Zukigiunlocker.exe" MD5
          3⤵
            PID:2728
          • C:\Windows\system32\find.exe
            find /i /v "md5"
            3⤵
              PID:2716
            • C:\Windows\system32\find.exe
              find /i /v "certutil"
              3⤵
                PID:2876
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c cls
              2⤵
                PID:2888
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c cls
                2⤵
                  PID:2780
                • C:\Windows\system32\cmd.exe
                  cmd /C "color b && title Error && echo Crash caused by: dllinjection don't tamper with the program."
                  2⤵
                    PID:2868
                  • C:\Windows\system32\cmd.exe
                    cmd /C "color b && title Error && echo Crash caused by: Hooking DebugBreak don't tamper with the program."
                    2⤵
                      PID:2704
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -u -p 1992 -s 712
                      2⤵
                        PID:2556
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /c cls
                        2⤵
                          PID:2916
                        • C:\Windows\system32\cmd.exe
                          cmd /C "color b && title Error && echo Crash caused by: dllinjection don't tamper with the program."
                          2⤵
                            PID:2964

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • memory/1992-0-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-1-0x0000000076FF0000-0x0000000076FF2000-memory.dmp

                          Filesize

                          8KB

                        • memory/1992-2-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-4-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-3-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-6-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-7-0x0000000000400000-0x0000000000401000-memory.dmp

                          Filesize

                          4KB

                        • memory/1992-14-0x0000000076FA0000-0x0000000077149000-memory.dmp

                          Filesize

                          1.7MB

                        • memory/1992-54-0x0000000140000000-0x00000001417C9000-memory.dmp

                          Filesize

                          23.8MB

                        • memory/1992-55-0x0000000076FA0000-0x0000000077149000-memory.dmp

                          Filesize

                          1.7MB