Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/08/2026, 20:12

General

  • Target
    nookat.exe
  • Size 20.8MB
  • Sample260813-yywp7axset
  • SHA256 3de8101ade41cf302a63646753c638ae18e8e434bf5b58465eb6649090105789
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Network Share Discovery 1 TTPs

    Attempt to gather information on host network.

  • Drops file in Windows directory 60 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\nookat.exe
    "C:\Users\Admin\AppData\Local\Temp\nookat.exe"
    1⤵
    • Checks whether UAC is enabled
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:592
    • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
      "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --autoplay-policy=no-user-gesture-required --disable-features=msWebOOUI,msPdfOOUI,msSmartScreenProtection --enable-features=MojoIpcz --lang=en-US --accept-lang=en-US --mojo-named-platform-channel-pipe=592.600.15706958486671077199 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
      2⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of WriteProcessMemory
      PID:6080
      • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
        "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Local\io.nookat\EBWebView /prefetch:4 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=122.0.6261.139 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --annotation=plat=Win64 "--annotation=prod=Edge WebView2" --annotation=ver=122.0.2365.106 --initial-client-data=0x184,0x188,0x18c,0x140,0x194,0x7ffe99ec5fd8,0x7ffe99ec5fe4,0x7ffe99ec5ff0
        3⤵
          PID:4304
        • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
          "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=gpu-process --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=1760 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:2 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
          3⤵
            PID:4188
          • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
            "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=1760 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:3 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
            3⤵
              PID:5264
            • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
              "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=2300 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
              3⤵
                PID:1416
              • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=renderer --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --autoplay-policy=no-user-gesture-required --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --js-flags="--harmony-weak-refs-with-cleanup-some --expose-gc --ms-user-locale=" --mojo-platform-channel-handle=3348 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4 /prefetch:1
                3⤵
                  PID:1648
                • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                  "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=4248 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
                  3⤵
                    PID:3444
                  • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                    "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=4524 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
                    3⤵
                      PID:1232
                    • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                      "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=gpu-process --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 --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --gpu-preferences=WAAAAAAAAADoAAAMAAAAAAAAAAAAAAAAAABgAAAAAAA4AAAAAAAAAAAAAABEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --mojo-platform-channel-handle=4720 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1832
                    • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe
                      "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\122.0.2365.106\msedgewebview2.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\io.nookat\EBWebView" --webview-exe-name=nookat.exe --webview-exe-version=0.1.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --edge-webview-custom-scheme --no-appcompat-clear --mojo-platform-channel-handle=4732 --field-trial-handle=1772,i,18197783417057048542,17974753344285915888,262144 --enable-features=MojoIpcz --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version /prefetch:8 /pfhostedapp:2337f4f1d49300638510ccc272e76aded3b6c2b4
                      3⤵
                        PID:5936

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 3d50950f3d95085aab2faf86a60b6299719eba79df4edec15846713fd00c94d9
                        • MD5 SHA1 SHA512 TLSH

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 9d551c3b9902c39f0e97a6228b0c847f030f351f5f5f4e8318aaa2cdac4518c4
                        • MD5 SHA1 SHA512

                        throttle_store.dat

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Crashpad\throttle_store.dat
                        • Size 20B
                        • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                        • MD5 SHA1 SHA512

                        5dfa025f-a050-4bba-bbd9-2939ab58ceed.tmp

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\5dfa025f-a050-4bba-bbd9-2939ab58ceed.tmp
                        • Size 6KB
                        • SHA256 ab8ecf0eb6f551a4ba30d1eac8ff907d2e0692a16e86e5d118b23bec23ecd0d4
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        the-real-index

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Code Cache\js\index-dir\the-real-index
                        • Size 72B
                        • SHA256 f78ffbb8b1c1ec629669ff36ddf2c5ce27526f517d8f53d4281bc8b37d8b406d
                        • MD5 SHA1 SHA512 TLSH

                        the-real-index~RFe59f776.TMP

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Code Cache\js\index-dir\the-real-index~RFe59f776.TMP
                        • Size 48B
                        • SHA256 525722e1cdd505d331e19aa0528b2efe3dd426fad49e3aaf05f148cac7ffc9ed
                        • MD5 SHA1 SHA512

                        MANIFEST-000001

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Extension Rules\MANIFEST-000001
                        • Size 41B
                        • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                        • MD5 SHA1 SHA512

                        Network Persistent State

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Network\Network Persistent State
                        • Size 111B
                        • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                        • MD5 SHA1 SHA512 TLSH

                        Network Persistent State~RFe5acc79.TMP

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Network\Network Persistent State~RFe5acc79.TMP
                        • Size 59B
                        • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
                        • MD5 SHA1 SHA512 TLSH

                        SCT Auditing Pending Reports

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Network\SCT Auditing Pending Reports
                        • Size 2B
                        • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                        • MD5 SHA1 SHA512

                        Preferences

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Preferences
                        • Size 6KB
                        • SHA256 789dc7c0ab607bb06b9b2b888a2a5f893613134152b8de594aced4ff47335b05
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        CURRENT

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Default\Site Characteristics Database\CURRENT
                        • Size 16B
                        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                        • MD5 SHA1 SHA512

                        data_0

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\GraphiteDawnCache\data_0
                        • Size 8KB
                        • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                        • MD5 SHA1 SHA512 SSDEEP

                        data_1

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\GraphiteDawnCache\data_1
                        • Size 264KB
                        • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                        • MD5 SHA1 SHA512 SSDEEP

                        data_2

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\GraphiteDawnCache\data_2
                        • Size 8KB
                        • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                        • MD5 SHA1 SHA512 SSDEEP

                        data_3

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\GraphiteDawnCache\data_3
                        • Size 8KB
                        • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                        • MD5 SHA1 SHA512 SSDEEP

                        Local State

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Local State
                        • Size 3KB
                        • SHA256 175f0cf0bedf3bbacbca263856a86e186e29c54c3e14e85678c560bee2d31324
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Local State
                        • Size 15KB
                        • SHA256 6c2028a2e02fd413bd0d136597c6a10a5bf7987cd564e36a3400241652a443b2
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Local State
                        • Size 2KB
                        • SHA256 5ae4f53743b91ad41741f32f0b55f0416d8ac36d738954c689687c7538d47843
                        • MD5 SHA1 SHA512 TLSH

                        Local State~RFe59a5ac.TMP

                        • Path C:\Users\Admin\AppData\Local\io.nookat\EBWebView\Local State~RFe59a5ac.TMP
                        • Size 1KB
                        • SHA256 0537ae2959cc0cf7df0dd5262aace304685d2b9ef9d0f90acd1b0a94ba7f6ff3
                        • MD5 SHA1 SHA512 TLSH

                        hyph-bn.hyb

                        • Path C:\Windows\SystemTemp\chrome_Unpacker_BeginUnzipping6080_958720278\hyph-bn.hyb
                        • Size 703B
                        • SHA256 c2784e33158a807135850f7125a7eaabe472b3cfc7afb82c74f02da69ea250fe
                        • MD5 SHA1 SHA512 TLSH

                        hyph-mr.hyb

                        • Path C:\Windows\SystemTemp\chrome_Unpacker_BeginUnzipping6080_958720278\hyph-mr.hyb
                        • Size 687B
                        • SHA256 f4df224d459fd111698dd5a13613c5bbf0ed11f04278d60230d028010eac0c42
                        • MD5 SHA1 SHA512 TLSH

                        hyph-nn.hyb

                        • Path C:\Windows\SystemTemp\chrome_Unpacker_BeginUnzipping6080_958720278\hyph-nn.hyb
                        • Size 141KB
                        • SHA256 5bcbb58eaf65f13f6d039244d942f37c127344e3a0a2e6c32d08236945132809
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        memory/1232-443-0x0000012037C00000-0x0000012037C2A000-memory.dmp

                        memory/1232-283-0x0000012037C30000-0x0000012037C31000-memory.dmp

                        memory/1648-83-0x00007FFEBC070000-0x00007FFEBC071000-memory.dmp

                        memory/1832-462-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-470-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-471-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-468-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-464-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-469-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-473-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/1832-472-0x000001CF5B990000-0x000001CF5B991000-memory.dmp

                        memory/3444-253-0x000001CA07FC0000-0x000001CA07FEA000-memory.dmp

                        memory/3444-245-0x000001CA07FF0000-0x000001CA07FF1000-memory.dmp

                        memory/3444-244-0x00007FFEBBA80000-0x00007FFEBBA81000-memory.dmp

                        memory/4188-27-0x00007FFEBC070000-0x00007FFEBC071000-memory.dmp

                        memory/5936-476-0x000001FDA6EA0000-0x000001FDA6EA1000-memory.dmp

                        memory/5936-487-0x000001FDA6E70000-0x000001FDA6E9A000-memory.dmp