Analysis

  • max time kernel
    150s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 03:30

General

  • Target

    5be9acaebf27218731ef9bfca990b9f0_NEAS.exe

  • Size

    3.6MB

  • MD5

    5be9acaebf27218731ef9bfca990b9f0

  • SHA1

    903185395cf0bb739612903a048788538517c65a

  • SHA256

    fda373f32ac00a6d88ffb7ccfac41df243b8b6e42234d22b90b97cf385d70010

  • SHA512

    a0b2d8b1a1d07dcdc1c012f1abd416597d4ff7d275ad9604b8a025a8ad4f53744cfcc63621a9b56ddf05779f930807fdcc34258b0aa2ceae7337ff9ba700028c

  • SSDEEP

    49152:ksgY1bXNn4iM1mo7JFAU9YfLxd4cY1DJmXTHX1bLu1LriJzf64iVDJEY:5gwrNn4Yo7Lefb4cY1DY5bL4Lrc7NaJ3

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 15 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 5 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 5 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5be9acaebf27218731ef9bfca990b9f0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\5be9acaebf27218731ef9bfca990b9f0_NEAS.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Writes to the Master Boot Record (MBR)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:908
    • \??\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
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Writes to the Master Boot Record (MBR)
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4124
      • \??\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
        • Checks whether UAC is enabled
        • Writes to the Master Boot Record (MBR)
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3256
        • \??\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
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Writes to the Master Boot Record (MBR)
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:5108
          • \??\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
            • Writes to the Master Boot Record (MBR)
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetWindowsHookEx
            PID:4808

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\ProgramData\mntemp

          Filesize

          16B

          MD5

          54fd8ae71831d9afc54c3b3a9cad01e8

          SHA1

          c8cd04c1fd27990aaaf98c16d28d9fddaa61beb5

          SHA256

          143ac77670384287b780c744a95ce45e95b28747cdc93a75069be8ffb8da2962

          SHA512

          de6fb3af41c9b3831625935c29998f106bd9361edb13a1b9ce02f5295298b17771e9bf01dec7ca749ff00b517de9e6ea77935185c1081a1795cbf0e69af17f40

        • C:\Windows\Resources\Themes\explorer.exe

          Filesize

          3.6MB

          MD5

          139178e392b2602875ab8ce4af7488ac

          SHA1

          179287f8fcce04b4c2e5686caee81a3e4d7b790f

          SHA256

          5b962906bd37088b17c8110499e86dc46503ebf402526377c43a30e625e06e35

          SHA512

          4589625c8559b7aae3e5d62c093e1024e637adfa7f47add2450afe889ebc213acec465cf0adf85c61e3027665a81deb1485a843c03d000777f9c68c10248e932

        • C:\Windows\Resources\spoolsv.exe

          Filesize

          3.6MB

          MD5

          33f2c816df6345bfb2ededf64fb3b7a0

          SHA1

          d768448c2fe5346d371abdaca7006b8bd147a3e9

          SHA256

          4dfafc3b98726572e892f994062133d333dd61de7fb1fee7be1b0651d1c46dc3

          SHA512

          bec0d495ed66d57c189aa5cb6615fa818369b0f3969109e27232a80581b3681e5bc01b4c158f547f9fe82127e8cae71a04a9e83d30754253e69e436346da3c62

        • C:\Windows\Resources\svchost.exe

          Filesize

          3.6MB

          MD5

          6cbdf3dc3924066e9f1f40ecd80d6e48

          SHA1

          b0652f24d44baf5deb9ff47a24ad6ca9443d58f9

          SHA256

          147d8eade5540ac3ed9826a218252b8f24f16c721295b0ecf48edf7f005714d3

          SHA512

          7ec3e0bdaaf3f29ab5d786380155679824275eb7d028899d7402707820d0fea257badba8410ca7365a5bb27d1b3cff64a0683eea9f18cd490fcb8b07fada7f44

        • memory/908-1-0x00000000778E4000-0x00000000778E6000-memory.dmp

          Filesize

          8KB

        • memory/908-0-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/908-40-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/3256-41-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/3256-21-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/4124-11-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/4124-42-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/4124-54-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/4808-38-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/4808-34-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB

        • memory/5108-43-0x0000000000400000-0x0000000000C23000-memory.dmp

          Filesize

          8.1MB