Analysis

  • max time kernel
    120s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    17-08-2024 22:07

General

  • Target

    4c4ad3168ff823c050f984b5e2c69810N.exe

  • Size

    2.5MB

  • MD5

    4c4ad3168ff823c050f984b5e2c69810

  • SHA1

    5e802e2f209c9f19c2fd8b7d5094317bad4cdb29

  • SHA256

    d8b6e5f27f7c466653896bc2e66519e3f3c358d0e715ebdc30f132cfe01f5891

  • SHA512

    4477b36dbfbccc5aaa96a8bec3a159339251dbd22141e899aa4e1f7b58c8d89b7d44a52c6d1e7b38eba7ff91882cda73f8a6087df672370d2d9038de8836a237

  • SSDEEP

    49152:JxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxR:Jxx9NUFkQx753uWuCyyxR

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
  • Checks BIOS information in registry 2 TTPs 10 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Themida packer 18 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 5 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c4ad3168ff823c050f984b5e2c69810N.exe
    "C:\Users\Admin\AppData\Local\Temp\4c4ad3168ff823c050f984b5e2c69810N.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1668
    • \??\c:\windows\resources\themes\explorer.exe
      c:\windows\resources\themes\explorer.exe
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2884
      • \??\c:\windows\resources\spoolsv.exe
        c:\windows\resources\spoolsv.exe SE
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2792
        • \??\c:\windows\resources\svchost.exe
          c:\windows\resources\svchost.exe
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2564
          • \??\c:\windows\resources\spoolsv.exe
            c:\windows\resources\spoolsv.exe PR
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:2732
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:10 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2984
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:11 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:580
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2604

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.5MB

      MD5

      6a7ee542d20ed61aa2f7a3bd669b50c5

      SHA1

      282a1df28296de59b00c94716b6c953cc520946c

      SHA256

      3d30b4d87d5bc7d44bdba783a492ef42db5b21b2f761855ff8e108409866e158

      SHA512

      2674e417dade4fa835ba56643e3c9d7ee4decc888a20462ed8586400629dd612a93cc030e895186a2f62286a03213b1e191a4532fb0ebe5be66ebbc0dd2103a0

    • \Windows\Resources\spoolsv.exe

      Filesize

      2.5MB

      MD5

      3f1e1941ed4d264f1ff54487f5a396bc

      SHA1

      31134fdc6aa5082663472d2bf710b4d9b2a43619

      SHA256

      e9271b8302087cd336c7088cfe99368c405c818dee7190b48d5e14dd840529ee

      SHA512

      af9d44907531b9da52f78582d76eebabc4d06bd1002bcc4b300b8865fade8929e260e24044ac8e96d2f2b2f1c64bdabfb3751c70ea789fe3b7daff7220b31055

    • \Windows\Resources\svchost.exe

      Filesize

      2.5MB

      MD5

      aeb9c1c8244192d921926ba9d8d2781f

      SHA1

      d295f8c11c3be77e101f8b66c5ac0492e377bc4a

      SHA256

      c35120c819cc228c2abc56850a6004b76557cd798e1ff2a7c5e8e1bf5dca2587

      SHA512

      7e57e68b2922a306d8c9cf6465bbf60040b0be30fc09d1c224656bd8573b9f09830933b0a2de1e045a145dca3fc1de1be61be221f256314dd9e0f151634a9100

    • memory/1668-52-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/1668-1-0x0000000076ED0000-0x0000000076ED2000-memory.dmp

      Filesize

      8KB

    • memory/1668-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/1668-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/1668-44-0x0000000003560000-0x0000000003B6E000-memory.dmp

      Filesize

      6.1MB

    • memory/2564-67-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2564-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2564-37-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-50-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2792-34-0x00000000032D0000-0x00000000038DE000-memory.dmp

      Filesize

      6.1MB

    • memory/2792-49-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2792-23-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-11-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-54-0x00000000032E0000-0x00000000038EE000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-66-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-22-0x00000000032E0000-0x00000000038EE000-memory.dmp

      Filesize

      6.1MB

    • memory/2884-68-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB