Analysis

  • user interaction
    yes
  • max time kernel
    33s
  • max time network
    35s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    06/05/2026, 17:25

General

  • Target
    CheckX.exe
  • Size 9.8MB
  • Sample260506-vzelhsbt9p
  • SHA256 22ee14ed2de9958e649feb53cfee79fae12155cc20f1a55e6a657ab0132ffbca
  • 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.

  • 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CheckX.exe
    "C:\Users\Admin\AppData\Local\Temp\CheckX.exe"
    1⤵
    • Checks whether UAC is enabled
    • Modifies trusted root certificate store through registry
    • Modifies system certificate store
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5028
    • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
      "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --embedded-browser-webview=1 --webview-exe-name=CheckX.exe --user-data-dir="C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --mojo-named-platform-channel-pipe=5028.4828.8989315424166056662
      2⤵
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of WriteProcessMemory
      PID:4320
      • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
        "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=crashpad-handler --user-data-dir=C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Crashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --annotation=plat=Win64 "--annotation=prod=Edge WebView2" --annotation=ver=132.0.2957.140 --initial-client-data=0x15c,0x160,0x164,0x138,0x16c,0x7ff98440b078,0x7ff98440b084,0x7ff98440b090
        3⤵
          PID:1500
        • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
          "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=gpu-process --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView" --webview-exe-name=CheckX.exe --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=1748,i,1775945665707887361,6536047215079910227,262144 --variations-seed-version --mojo-platform-channel-handle=1712 /prefetch:2
          3⤵
            PID:3896
          • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
            "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView" --webview-exe-name=CheckX.exe --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2052,i,1775945665707887361,6536047215079910227,262144 --variations-seed-version --mojo-platform-channel-handle=2068 /prefetch:3
            3⤵
              PID:4032
            • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
              "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView" --webview-exe-name=CheckX.exe --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2384,i,1775945665707887361,6536047215079910227,262144 --variations-seed-version --mojo-platform-channel-handle=2396 /prefetch:8
              3⤵
                PID:4428
              • C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe
                "C:\Program Files (x86)\Microsoft\EdgeWebView\Application\132.0.2957.140\msedgewebview2.exe" --type=renderer --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView" --webview-exe-name=CheckX.exe --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --video-capture-use-gpu-memory-buffer --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=" --always-read-main-dll --field-trial-handle=3656,i,1775945665707887361,6536047215079910227,262144 --variations-seed-version --mojo-platform-channel-handle=3664 /prefetch:1
                3⤵
                  PID:1976
              • C:\Windows\system32\cmd.exe
                cmd.exe /c "reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:3300
                • C:\Windows\system32\reg.exe
                  reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid
                  3⤵
                    PID:3928
                • C:\Windows\system32\cmd.exe
                  cmd.exe /c "reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid"
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4460
                  • C:\Windows\system32\reg.exe
                    reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid
                    3⤵
                      PID:2076
                  • C:\Windows\system32\cmd.exe
                    cmd.exe /c "reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid"
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2344
                    • C:\Windows\system32\reg.exe
                      reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid
                      3⤵
                        PID:3624

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        settings.dat

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 7db41fcc36cfabe77bdf3fbd3bd62c409ab0eeaea8c3ce02dcddbd7f5f5841c9
                        • MD5 SHA1 SHA512

                        settings.dat

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 0e0693e0f227f339dcd9049ba308ee8b8b93938df019c4b1be2b6c99e62d7b49
                        • MD5 SHA1 SHA512 TLSH

                        throttle_store.dat

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Crashpad\throttle_store.dat
                        • Size 20B
                        • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                        • MD5 SHA1 SHA512

                        data_1

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\DawnGraphiteCache\data_1
                        • Size 264KB
                        • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                        • MD5 SHA1 SHA512 SSDEEP

                        data_0

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\DawnWebGPUCache\data_0
                        • Size 8KB
                        • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                        • MD5 SHA1 SHA512 SSDEEP

                        data_2

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\DawnWebGPUCache\data_2
                        • Size 8KB
                        • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                        • MD5 SHA1 SHA512 SSDEEP

                        data_3

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\DawnWebGPUCache\data_3
                        • Size 8KB
                        • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                        • MD5 SHA1 SHA512 SSDEEP

                        MANIFEST-000001

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

                        SCT Auditing Pending Reports

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

                        Preferences

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\Preferences
                        • Size 6KB
                        • SHA256 e4986bc9faee463d347846301a7ed571a8d4973682eb952cd43dbffdf1000826
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Preferences

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\Preferences
                        • Size 6KB
                        • SHA256 40b10b4fb7262b3cca4d086fdc3ca5bd0243e79438f6bf999f30fecfae3c253d
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        CURRENT

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Default\Sync Data\LevelDB\CURRENT
                        • Size 16B
                        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                        • MD5 SHA1 SHA512

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State
                        • Size 1KB
                        • SHA256 330505b13b886d12f76c904d22e87a85946ddbeccb47d60b3d7a7c9cba080f02
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State
                        • Size 2KB
                        • SHA256 b3c34ee76bffb1387a5552b416ff954e6696ddcba5f62cfee3f9bb703157d1fe
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State
                        • Size 3KB
                        • SHA256 e8918916b05892c44ae4c6e8f649a9033110e976f9ebabe041768ec64f451972
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State
                        • Size 4KB
                        • SHA256 bccc06d8752e66a749fbe3bf8fe34d93e71f8a2c547ae1293f8f4bf988ee96b6
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State
                        • Size 14KB
                        • SHA256 e869978656efc10e965f82df2c7c91669b1bf43d1ff9d9c992c3d9613dbfa993
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State~RFe588f5a.TMP

                        • Path C:\Users\Admin\AppData\Roaming\CheckX.exe\EBWebView\Local State~RFe588f5a.TMP
                        • Size 1KB
                        • SHA256 17f1440091b3964fe770a7ab792f2773da836c66619199d1bcf7412e6301942a
                        • MD5 SHA1 SHA512 TLSH

                        memory/1976-160-0x00007FF99F860000-0x00007FF99F861000-memory.dmp

                        memory/3896-34-0x00007FF99F860000-0x00007FF99F861000-memory.dmp

                        memory/4320-191-0x00000274A8D40000-0x00000274A8D4C000-memory.dmp

                        memory/4320-190-0x00000274A8D00000-0x00000274A8D2C000-memory.dmp

                        memory/4320-192-0x00000274B1200000-0x00000274B1227000-memory.dmp

                        memory/4320-193-0x00000274B1230000-0x00000274B126B000-memory.dmp

                        memory/4428-77-0x00007FF9A06A0000-0x00007FF9A06A1000-memory.dmp

                        memory/4428-76-0x00007FF99FEE0000-0x00007FF99FEE1000-memory.dmp

                        memory/5028-189-0x00000187F0D10000-0x00000187F0D1C000-memory.dmp

                        memory/5028-0-0x00000187F0DA0000-0x00000187F0DC8000-memory.dmp