Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/06/2026, 03:20

General

  • Target
    MORTARCALC.exe
  • Size 2.3MB
  • Sample260605-dvtffaby5r
  • SHA256 97116f195d743d1ac3a6d5e824f133581cc34868f1044e0f3e87a064ae09238f
  • 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 Program Files directory 61 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MORTARCALC.exe
    "C:\Users\Admin\AppData\Local\Temp\MORTARCALC.exe"
    1⤵
    • Checks whether UAC is enabled
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:4864
    • 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=MORTARCALC.exe --webview-exe-version=3.1.0 --user-data-dir="C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --disable-features=msWebOOUI,msPdfOOUI,msSmartScreenProtection --lang=en-US --mojo-named-platform-channel-pipe=4864.4884.4202851602540944678
      2⤵
      • Drops file in Program Files directory
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of WriteProcessMemory
      PID:628
      • 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\Local\com.mortarcalc.app\EBWebView /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Users\Admin\AppData\Local\com.mortarcalc.app\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=0x164,0x168,0x16c,0x140,0x174,0x7fff8a36b078,0x7fff8a36b084,0x7fff8a36b090
        3⤵
          PID:1072
        • 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\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=1708,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=1704 /prefetch:2
          3⤵
            PID:3980
          • 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\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=1352,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=2028 /prefetch:3
            3⤵
              PID:4620
            • 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\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2364,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=2376 /prefetch:8
              3⤵
                PID:3736
              • 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\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --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=3588,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=3596 /prefetch:1
                3⤵
                  PID:4380
                • 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=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=1016,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=4472 /prefetch:8
                  3⤵
                    PID:3788
                  • 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=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=4612,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=4484 /prefetch:8
                    3⤵
                      PID:2340
                    • 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 --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 --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADoAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAABCAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=4388,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=4504 /prefetch:8
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:5312
                    • 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=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView" --webview-exe-name=MORTARCALC.exe --webview-exe-version=3.1.0 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=4504,i,6128744836727530446,1864712279341266533,262144 --disable-features=msPdfOOUI,msSmartScreenProtection,msWebOOUI --variations-seed-version --mojo-platform-channel-handle=4392 /prefetch:8
                      3⤵
                        PID:5444

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        crl-set

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1139111156\crl-set
                        • Size 22KB
                        • SHA256 6ddcaf50aaff98b960d067054ce2ce17872ac0719d02abbb7fe56b9eabc818f2
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        manifest.json

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1139111156\manifest.json
                        • Size 113B
                        • SHA256 98821f71a1973ac61b45967ce0c121eb598ac6e95abaa23c912d2f33e4237d8c
                        • MD5 SHA1 SHA512 TLSH

                        hyph-as.hyb

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1859210242\hyph-as.hyb
                        • Size 703B
                        • SHA256 c2784e33158a807135850f7125a7eaabe472b3cfc7afb82c74f02da69ea250fe
                        • MD5 SHA1 SHA512 TLSH

                        hyph-hi.hyb

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1859210242\hyph-hi.hyb
                        • Size 687B
                        • SHA256 f4df224d459fd111698dd5a13613c5bbf0ed11f04278d60230d028010eac0c42
                        • MD5 SHA1 SHA512 TLSH

                        hyph-nb.hyb

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1859210242\hyph-nb.hyb
                        • Size 141KB
                        • SHA256 c2771fbb1bfff7db5e267dc7a4505a9675c6b98cfe7a8f7ae5686d7a5a2b3dd0
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        manifest.json

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_1859210242\manifest.json
                        • Size 82B
                        • SHA256 d571ef33b0e707571f10bb37b99a607d6f43afe33f53d15b4395b16ef3fda665
                        • MD5 SHA1 SHA512 TLSH

                        manifest.json

                        • Path C:\Program Files\chrome_Unpacker_BeginUnzipping628_2097206482\manifest.json
                        • Size 135B
                        • SHA256 ba5c9096d20a482aaa1aa9e5f98ad6127d3e97c2f21de84f7c78d9b8073c8e26
                        • MD5 SHA1 SHA512 TLSH

                        protocols.json

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\AutoLaunchProtocolsComponent\1.0.0.10\protocols.json
                        • Size 3KB
                        • SHA256 4fd800e7b1a5fb24b13fac2e31946d205012b7c28d8c61580b0669b2fa3517cc
                        • MD5 SHA1 SHA512 TLSH

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 2ce1becd6e8be638f5198220599d27d7df5ceb30b2af9d48e2e9efebccf7bb49
                        • MD5 SHA1 SHA512

                        settings.dat

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 7ef3e79ab843ec8e05b58185f0c02439aed20ffe724d95552ca61675ddd9a928
                        • MD5 SHA1 SHA512 TLSH

                        throttle_store.dat

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

                        data_1

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\DawnGraphiteCache\data_1
                        • Size 264KB
                        • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                        • MD5 SHA1 SHA512 SSDEEP

                        data_0

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\DawnWebGPUCache\data_0
                        • Size 8KB
                        • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                        • MD5 SHA1 SHA512 SSDEEP

                        data_2

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\DawnWebGPUCache\data_2
                        • Size 8KB
                        • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                        • MD5 SHA1 SHA512 SSDEEP

                        data_3

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\DawnWebGPUCache\data_3
                        • Size 8KB
                        • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                        • MD5 SHA1 SHA512 SSDEEP

                        MANIFEST-000001

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

                        Network Persistent State

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

                        Network Persistent State~RFe59a936.TMP

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\Network\Network Persistent State~RFe59a936.TMP
                        • Size 59B
                        • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
                        • MD5 SHA1 SHA512 TLSH

                        SCT Auditing Pending Reports

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

                        Preferences

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\Preferences
                        • Size 6KB
                        • SHA256 b02f24e4b926a837aa65b81ebf66bd70e7dd44a8d011bfb35f760d82f19bf908
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Preferences~RFe5920fb.TMP

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Default\Preferences~RFe5920fb.TMP
                        • Size 6KB
                        • SHA256 3c1bf24f80839ebf03d4cbdae119f218d0fe69777badec5922d15558d35bf430
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        CURRENT

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

                        Local State

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Local State
                        • Size 16KB
                        • SHA256 30bd6ea330726c967ba45193f25fdf6454f45bf67408634e2bb17964e7510b7b
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Local State
                        • Size 1KB
                        • SHA256 32171231a5fc69232a099b4796a2e6ba985bc026f4db7901da0bd07b350c6a1c
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Local State
                        • Size 2KB
                        • SHA256 0efc04d4bec59c9a32c93e12ca851b361e10354bf75ef9ef6d4193fed3f782dc
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Local State
                        • Size 3KB
                        • SHA256 7966efaaeb6d8451c4bfccca2123074e816167bfadbdad5a4097e6ca44acbf59
                        • MD5 SHA1 SHA512 TLSH

                        Local State~RFe58820c.TMP

                        • Path C:\Users\Admin\AppData\Local\com.mortarcalc.app\EBWebView\Local State~RFe58820c.TMP
                        • Size 1KB
                        • SHA256 7ce6b4929f69c1f2e7a738527d9cfbe8efab979b13f165cd64be99f791113162
                        • MD5 SHA1 SHA512 TLSH

                        memory/3736-47-0x00007FFFA6860000-0x00007FFFA6861000-memory.dmp

                        memory/3736-48-0x00007FFFA6510000-0x00007FFFA6511000-memory.dmp

                        memory/3980-25-0x00007FFFA5DF0000-0x00007FFFA5DF1000-memory.dmp

                        memory/3980-220-0x000001BC4FDC0000-0x000001BC4FDF0000-memory.dmp

                        memory/4380-123-0x00007FFFA5DF0000-0x00007FFFA5DF1000-memory.dmp

                        memory/5312-542-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-540-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-534-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-546-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-545-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-544-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-543-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-541-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-535-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp

                        memory/5312-536-0x00000196A3DA0000-0x00000196A3DA1000-memory.dmp