Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/10/2026, 14:11

General

  • Target
    Fauna.exe
  • Size 120.4MB
  • Sample261026-rhl3gset7t
  • SHA256 4a76d19f3a30b74f3df1b21b0936e6fb29747e7b1df1742ae13a5aa4b262a8a2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Queries registry keys for unique system GUIDs 1 TTPs 1 IoCs

    Queries the MachineGuid or HwProfileGuid value from the command line, commonly used to create a unique victim ID.

  • Queries system WMI classes for hardware identifiers 2 TTPs 1 IoCs

    Uses WMI to read hardware serial numbers or the system UUID, commonly used to fingerprint the victim machine.

  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Modifies registry key 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
    "C:\Users\Admin\AppData\Local\Temp\Fauna.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of WriteProcessMemory
    PID:2448
    • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
      "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=gpu-process --field-trial-handle=1500,695650205778181976,16233041730188499921,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --gpu-preferences=MAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=1508 /prefetch:2
      2⤵
        PID:5064
      • C:\Windows\system32\reg.exe
        reg query HKLM\SOFTWARE\Microsoft\Cryptography /v MachineGuid
        2⤵
        • Queries registry keys for unique system GUIDs
        PID:3736
      • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
        "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1500,695650205778181976,16233041730188499921,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2072 /prefetch:8
        2⤵
        • Modifies trusted root certificate store through registry
        • Reads the TCP/IP host and domain name from the registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        PID:3872
      • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
        "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=renderer --disable-background-timer-throttling --field-trial-handle=1500,695650205778181976,16233041730188499921,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --lang=en-US --app-path="C:\Users\Admin\AppData\Local\Temp\resources\app" --enable-plugins --webview-tag --enable-sandbox --native-window-open --preload="C:\Users\Admin\AppData\Local\Temp\resources\app\preload.js" --context-isolation --background-color=#0f1012 --enable-spellcheck --enable-websql --disable-electron-site-instance-overrides --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2376 /prefetch:1
        2⤵
          PID:3640
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -NonInteractive -Command "(Get-CimInstance Win32_ComputerSystemProduct).UUID; '--'; Get-CimInstance Win32_DiskDrive | ForEach-Object { $_.SerialNumber }"
          2⤵
          • Queries system WMI classes for hardware identifiers
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2964
        • C:\Windows\system32\reg.exe
          reg query HKCU\Software\Burrow /v Install
          2⤵
          • Modifies registry key
          PID:5904
        • C:\Windows\system32\reg.exe
          reg add HKCU\Software\Burrow /v Install /t REG_SZ /d 923f0e163f17f706268ee17d482b32416a5caec69a32382df1fb7e59116f8e6f /f
          2⤵
          • Modifies registry key
          PID:5788
        • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
          "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=gpu-process --field-trial-handle=1500,695650205778181976,16233041730188499921,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.26100.1301 --gpu-preferences=MAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAIAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=2700 /prefetch:2
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1436

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            __PSScriptPolicyTest_np1tdc2a.lt0.psm1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_np1tdc2a.lt0.psm1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            data_0

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Cache\data_0
            • Size 8KB
            • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
            • MD5 SHA1 SHA512 SSDEEP

            data_2

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Cache\data_2
            • Size 8KB
            • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
            • MD5 SHA1 SHA512 SSDEEP

            data_3

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Cache\data_3
            • Size 8KB
            • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
            • MD5 SHA1 SHA512 SSDEEP

            temp-index

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Code Cache\js\index-dir\temp-index
            • Size 48B
            • SHA256 1be09e45968193ee528fad41a6c37f78934f5b58f1ec1f8845f667ad94a10f94
            • MD5 SHA1 SHA512

            CURRENT

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Local Storage\leveldb\CURRENT
            • Size 16B
            • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
            • MD5 SHA1 SHA512

            Preferences

            • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Preferences
            • Size 57B
            • SHA256 be4b8924ab38e8acf350e6e3b9f1f63a1a94952d8002759acd6946c4d5d0b5de
            • MD5 SHA1 SHA512 TLSH

            default.exc

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Spelling\en-US\default.exc
            • Size 2B
            • SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
            • MD5 SHA1 SHA512

            memory/2964-68-0x00000223679A0000-0x00000223679C4000-memory.dmp

            memory/2964-67-0x00000223679A0000-0x00000223679CA000-memory.dmp

            memory/2964-56-0x0000022367940000-0x0000022367962000-memory.dmp

            memory/2964-64-0x00000223002E0000-0x00000223002FE000-memory.dmp

            memory/2964-65-0x0000022300580000-0x0000022300632000-memory.dmp

            memory/2964-66-0x00000223660F0000-0x00000223660FA000-memory.dmp

            memory/3640-93-0x00000206B9620000-0x00000206B96D2000-memory.dmp

            memory/3640-19-0x00007FFFC5A60000-0x00007FFFC5A61000-memory.dmp

            memory/3640-20-0x00007FFFC5DD0000-0x00007FFFC5DD1000-memory.dmp

            memory/3640-92-0x00000206B8D60000-0x00000206B90DC000-memory.dmp

            memory/3640-124-0x00000206B9620000-0x00000206B96D2000-memory.dmp

            memory/5064-3-0x00007FFFC5FB0000-0x00007FFFC5FB1000-memory.dmp

            memory/5064-91-0x0000019BF3750000-0x0000019BF3ACC000-memory.dmp

            memory/5064-131-0x0000019BF3750000-0x0000019BF3ACC000-memory.dmp

            memory/5064-149-0x0000019BF3750000-0x0000019BF3ACC000-memory.dmp