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Analysis

  • max time kernel
    15s
  • max time network
    28s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231215-en
  • resource tags

    arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    29/12/2023, 23:19

General

  • Target

    Setup.exe

  • Size

    4.6MB

  • MD5

    862c7e9cf539af2260d1104a9873d228

  • SHA1

    851ec5e5bce6458f36756b2250c5573bd97927fc

  • SHA256

    a631ccfd88b9daa48e6d1a70fc6bed57caed44e415caa52f8d329d61221a4b9d

  • SHA512

    735d9f7890fbc30e08ddf1b9d2c883eefe0931fdcc8b54c3f6e9b717fd07557fc3bb4499a3fae97aa63464e8d6e16f8d4c374c29e05006d58e9e8b85307f27c3

  • SSDEEP

    98304:tCbg3U71Ca89eJn3Ka8fVRT4i0CAv7KYAAxst1c9l5PuF4qNe:gbKU7S03gLul7K6xsvcHgqV

Malware Config

Signatures

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

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

  • Themida packer 10 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\Setup.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    PID:5008
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 2200
      2⤵
      • Program crash
      PID:3556
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5008 -ip 5008
    1⤵
      PID:4776
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
      1⤵
        PID:4620

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

        Filesize

        10KB

        MD5

        23c37173abaa7d6835f959b4a9c6ca1e

        SHA1

        33e312147d38fc6dc6ebb8ada26b1400280fc1d6

        SHA256

        75f6e0f87cca364e6bb0228e50208c411ed6312a2ff4330d50e5bfd316b9f458

        SHA512

        78295140a1c65be46063a46e00862ecddb6b72b7169a32c3bff87057275e2c39847680fb5649da457ddc664ac53c0a431f41a9c5e17634a8fc10cdb5984f0407

      • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

        Filesize

        10KB

        MD5

        1c644cb4d07fdd3073ea68277e981c0c

        SHA1

        121ce00fe8e8d4355080caea62490c051d3deb59

        SHA256

        881fa7efe12c4e2634919f996e5b91306bf946f5a84f578490f792795ef863ac

        SHA512

        5471ba64e5f46ca28fa7d8613eb9b653700e3ace600b9941947807bc61ec257100603bd4f2a2cbfd298cb096ec4b47c7860c8d3467fdf1604e8f9ef47e3b1799

      • memory/5008-13-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-14-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-9-0x0000000077250000-0x0000000077340000-memory.dmp

        Filesize

        960KB

      • memory/5008-10-0x0000000077C06000-0x0000000077C08000-memory.dmp

        Filesize

        8KB

      • memory/5008-11-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-12-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-0-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-8-0x0000000077250000-0x0000000077340000-memory.dmp

        Filesize

        960KB

      • memory/5008-15-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-16-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-17-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-23-0x0000000077250000-0x0000000077340000-memory.dmp

        Filesize

        960KB

      • memory/5008-22-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB

      • memory/5008-7-0x0000000077250000-0x0000000077340000-memory.dmp

        Filesize

        960KB

      • memory/5008-1-0x0000000000070000-0x0000000000E49000-memory.dmp

        Filesize

        13.8MB