Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/07/2026, 06:15

General

  • Target
    mbox/assets/CheckConnection(2).html
  • Size 34KB
  • Sample260705-gz5aaaes7r
  • SHA256 149d0fbf322397c0f1d65c61072b93955cd747904e9cc194e03afa5aecb637cc
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10

Malware Config

Signatures

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --disable-default-apps --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument C:\Users\Admin\AppData\Local\Temp\mbox\assets\CheckConnection(2).html
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:520
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=139.0.7258.155 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=139.0.3405.125 --initial-client-data=0x238,0x23c,0x240,0x234,0x248,0x7ffa61dcc188,0x7ffa61dcc194,0x7ffa61dcc1a0
      2⤵
        PID:2024
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --always-read-main-dll --metrics-shmem-handle=1628,i,14415499157061154963,14554103242973298772,262144 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=2196 /prefetch:2
        2⤵
          PID:4424
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-pre-read-main-dll --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=1940,i,57797501622935679,16104043704801968311,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=2236 /prefetch:3
          2⤵
          • System Time Discovery
          PID:3184
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=2328,i,9469090782000517923,15621791672638177021,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=2808 /prefetch:8
          2⤵
            PID:3788
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --always-read-main-dll --metrics-shmem-handle=3412,i,18355375769845401529,16582564422609270765,2097152 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=3480 /prefetch:1
            2⤵
              PID:3496
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --always-read-main-dll --metrics-shmem-handle=3416,i,5304351268217993267,2444220696074341984,2097152 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=3488 /prefetch:1
              2⤵
                PID:4772
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --always-read-main-dll --metrics-shmem-handle=4104,i,7526399906096413020,15349147839080220438,2097152 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=4212 /prefetch:1
                2⤵
                  PID:3464
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --extension-process --renderer-sub-type=extension --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --always-read-main-dll --metrics-shmem-handle=4168,i,2689947948946226090,11802158057282097191,2097152 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=4240 /prefetch:2
                  2⤵
                    PID:1288
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5080,i,5497315019063783902,364895104836155416,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=5124 /prefetch:8
                    2⤵
                      PID:3516
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=entity_extraction_service.mojom.Extractor --lang=en-US --service-sandbox-type=entity_extraction --onnx-enabled-for-ee --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5092,i,13901429148365175221,16859832957789200393,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=5152 /prefetch:8
                      2⤵
                        PID:4648
                      • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5876,i,11088639192065158552,3781764858633922894,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=5900 /prefetch:8
                        2⤵
                          PID:4436
                        • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5876,i,11088639192065158552,3781764858633922894,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=5900 /prefetch:8
                          2⤵
                            PID:3264
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=4280,i,16036084440501766715,4497882419308941787,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=560 /prefetch:8
                            2⤵
                              PID:2404
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=4500,i,14228659833463664567,4455515598555588187,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=4480 /prefetch:8
                              2⤵
                                PID:2812
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=4204,i,16151641812049109948,5830449476499717798,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=3392 /prefetch:8
                                2⤵
                                  PID:2740
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_search_indexer.mojom.SearchIndexerInterfaceBroker --lang=en-US --service-sandbox-type=search_indexer --message-loop-type-ui --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5096,i,2479664480992069636,16118436578113019719,524288 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=2548 /prefetch:8
                                  2⤵
                                    PID:2976
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.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=10.0.19041.546 --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADoAAAIAAAAAAAAAAAAAGAAAQAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --always-read-main-dll --metrics-shmem-handle=6084,i,13010479547395202347,9491308321036114711,262144 --field-trial-handle=2200,i,8021253394061014465,11688125646525637386,262144 --variations-seed-version --mojo-platform-channel-handle=5104 /prefetch:8
                                    2⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:4764
                                • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                                  1⤵
                                    PID:2040

                                  Network

                                        MITRE ATT&CK Enterprise v16

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        blocklist

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Ad Blocking\blocklist
                                        • Size 105KB
                                        • SHA256 bf637ca0b28ebd6e948876848ccfe71d201158d460d4ad944f124f9d17ee5472
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 280B
                                        • SHA256 ab98da7535c8de464335204ae97fd672936e639269325c3a388b3039d8396b83
                                        • MD5 SHA1 SHA512 TLSH

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 280B
                                        • SHA256 ec6419a915c6f94199df67c6cf1d67bc666c22ef160c8377d6792913a6518679
                                        • MD5 SHA1 SHA512 TLSH

                                        BookmarkMergedSurfaceOrdering

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\BookmarkMergedSurfaceOrdering
                                        • Size 6B
                                        • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                                        • MD5 SHA1 SHA512

                                        the-real-index

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                        • Size 3KB
                                        • SHA256 7f24cf025d9ae5c76b1452b76029eb7b1126a5bbffc2c679c6677d636c04991f
                                        • MD5 SHA1 SHA512 TLSH

                                        the-real-index~RFe58b09e.TMP

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index~RFe58b09e.TMP
                                        • Size 3KB
                                        • SHA256 6a47aba8a4e4d555380d73a010a0ba75435d3fafb93113600936567d44d1bbc7
                                        • MD5 SHA1 SHA512 TLSH

                                        SiteList-Enterprise.json

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\DualEngine\SiteList-Enterprise.json
                                        • Size 2B
                                        • SHA256 44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
                                        • MD5 SHA1 SHA512

                                        HubApps

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\HubApps
                                        • Size 106KB
                                        • SHA256 eb2fd7422436fff93f6be09df3294b26cdb7afd18e6aa94dcdc0f208db78b2ed
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Network Persistent State
                                        • Size 111B
                                        • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                                        • MD5 SHA1 SHA512 TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Network Persistent State
                                        • Size 949B
                                        • SHA256 1cb07475dfe0bb5ad0c1ad340afbdeb8e6f309510fd7dfad06f05992064a52db
                                        • MD5 SHA1 SHA512 TLSH

                                        SCT Auditing Pending Reports

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
                                        • Size 2B
                                        • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                        • MD5 SHA1 SHA512

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                        • Size 12KB
                                        • SHA256 08f247c65c28859d3bf7f7df798a9461ebae03ad0e8325d7f7a9b407e3ed7ebc
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                        • Size 13KB
                                        • SHA256 d4ce16555ec46752745791391c989c3193a6ad95915ad58b543bb33ad5696a8b
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Secure Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences
                                        • Size 30KB
                                        • SHA256 444f44edf6e9c12e4ad24dbac727c77c525800b14273246e0836e25e38d13b66
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        sync_diagnostic.log

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Sync Data\Logs\sync_diagnostic.log
                                        • Size 4KB
                                        • SHA256 8e3e9854e48e950fb618cf670b736420aef450f24decfe20bbc6b9ce39db1a8e
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        f119c50e-0d60-4560-9d28-d2ccdd8860a1.tmp

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\f119c50e-0d60-4560-9d28-d2ccdd8860a1.tmp
                                        • Size 70KB
                                        • SHA256 31a226211c491e1b0832d4cd3cf34d97165e24a7ce4ec655259cd188f3a2bd88
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        7b7c06bc-2e5b-4e83-87ca-b198f0524e72.tmp

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Edge Cloud Config\7b7c06bc-2e5b-4e83-87ca-b198f0524e72.tmp
                                        • Size 22KB
                                        • SHA256 d988156066b7fd22de278fbc96759d2caea6552094ffeb2ddd9307806059c5e4
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 22KB
                                        • SHA256 2c99c8438d0da3ac31a8c84ddc5f8a77a21e8e3912667df8342faeadceaf633c
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 19KB
                                        • SHA256 59aeea14723a77ae7a83f08191d0ac053515dff3633c83bb4d5dccca07c012ce
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 8KB
                                        • SHA256 97f1b900a98ae44e2ad1e91805c78a28acf3669a105c692346bcdecfb18c6a61
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 12KB
                                        • SHA256 d9e915ad60cfd1b981152813c03dc0d37b36f39af68b1de277a7f00bf1f5561f
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 8KB
                                        • SHA256 45049ef13620d88a07fb14e46c1b788d6fe6d23c016f879e8674988cc9b0d934
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 19KB
                                        • SHA256 eebdb0876e3b0727893713e8b05c070f751a34a3ae4bab4e3b1d9ead8e3276ec
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        25567afc-d7c4-4f4c-abc5-07086c469ed2.tmp

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\extensions_crx_cache\25567afc-d7c4-4f4c-abc5-07086c469ed2.tmp
                                        • Size 13B
                                        • SHA256 2771d13c637c267132afff9db67537bef95708534b79ae8d954254c4e64e4e0f
                                        • MD5 SHA1 SHA512

                                        5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\TokenBroker\Cache\5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres
                                        • Size 2KB
                                        • SHA256 63ed85184da82ac7030c7c8ce2469c5911cd9acac1a138f678611afe1ca7e304
                                        • MD5 SHA1 SHA512 TLSH