Analysis

  • max time kernel
    148s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-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

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 8 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⤵
    • Checks computer location settings
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
      "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=gpu-process --field-trial-handle=1568,14891941299381163482,1271171250514216072,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --gpu-preferences=MAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=1576 /prefetch:2
      2⤵
        PID:4496
      • C:\Windows\system32\reg.exe
        reg query HKLM\SOFTWARE\Microsoft\Cryptography /v MachineGuid
        2⤵
        • Queries registry keys for unique system GUIDs
        PID:1772
      • 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=1568,14891941299381163482,1271171250514216072,131072 --enable-features=WebComponentsV0Enabled --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDefaultCookies,SpareRendererForSitePerProcess --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1936 /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:756
      • 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=1568,14891941299381163482,1271171250514216072,131072 --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=2500 /prefetch:1
        2⤵
        • Checks computer location settings
        PID:780
      • 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:2884
      • C:\Windows\system32\reg.exe
        reg query HKCU\Software\Burrow /v Install
        2⤵
        • Modifies registry key
        PID:1416
      • C:\Windows\system32\reg.exe
        reg add HKCU\Software\Burrow /v Install /t REG_SZ /d 78ae9d842e1afab4a104f32e61986608cb781e2726f5b5cc5b1b123ee76b03f7 /f
        2⤵
        • Modifies registry key
        PID:384
      • C:\Users\Admin\AppData\Local\Temp\Fauna.exe
        "C:\Users\Admin\AppData\Local\Temp\Fauna.exe" --type=gpu-process --field-trial-handle=1568,14891941299381163482,1271171250514216072,131072 --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=10.0.19041.546 --gpu-preferences=MAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAIAAAQAAAAAAAAAAAAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAA= --mojo-platform-channel-handle=3160 /prefetch:2
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3364

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          __PSScriptPolicyTest_ikhnaxue.20v.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ikhnaxue.20v.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          6fb7e1f6-7347-4f09-822f-d44c539ce738.tmp

          • Path C:\Users\Admin\AppData\Roaming\Fauna Client\6fb7e1f6-7347-4f09-822f-d44c539ce738.tmp
          • Size 57B
          • SHA256 be4b8924ab38e8acf350e6e3b9f1f63a1a94952d8002759acd6946c4d5d0b5de
          • MD5 SHA1 SHA512 TLSH

          temp-index

          • Path C:\Users\Admin\AppData\Roaming\Fauna Client\Code Cache\js\index-dir\temp-index
          • Size 48B
          • SHA256 aa12efc6ad00164f2d9fd4a09bd8f0c1fbad9c2c9462830455cc95bef98630f6
          • MD5 SHA1 SHA512

          CURRENT

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

          default.dic

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

          memory/780-16-0x00007FFA5D8F0000-0x00007FFA5D8F1000-memory.dmp

          memory/780-15-0x00007FFA5D8E0000-0x00007FFA5D8E1000-memory.dmp

          memory/2884-52-0x0000029FCD1E0000-0x0000029FCD202000-memory.dmp

          memory/2884-65-0x0000029FE5760000-0x0000029FE578A000-memory.dmp

          memory/2884-66-0x0000029FE5760000-0x0000029FE5784000-memory.dmp

          memory/2884-69-0x0000029FE64B0000-0x0000029FE65FE000-memory.dmp

          memory/4496-3-0x00007FFA5EA90000-0x00007FFA5EA91000-memory.dmp