Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260130-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    03/05/2026, 16:25

General

  • Target
    Bootstrapper (1).exe
  • Size 3.2MB
  • Sample260503-tw9f2sdt8x
  • SHA256 7997e86a3b377e9fa3a0ea0ab1beef0752cf6052555e0a42eaa06adf354a3e5f
  • 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.

  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 12 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 WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bootstrapper (1).exe
    "C:\Users\Admin\AppData\Local\Temp\Bootstrapper (1).exe"
    1⤵
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    PID:4920
    • 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="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --user-data-dir="C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView" --noerrdialogs --embedded-browser-webview-dpi-awareness=2 --disable-features=msSmartScreenProtection --mojo-named-platform-channel-pipe=4920.3224.1411811723708727401
      2⤵
      • Drops file in Windows directory
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of WriteProcessMemory
      PID:460
      • 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\Bootstrapper (1).exe\EBWebView" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Bootstrapper (1).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=0x184,0x188,0x18c,0x160,0x194,0x7ffe31fab078,0x7ffe31fab084,0x7ffe31fab090
        3⤵
          PID:4508
        • 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\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=1832,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=1828 /prefetch:2
          3⤵
            PID:956
          • 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\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2072,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=2080 /prefetch:3
            3⤵
              PID:4900
            • 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\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2364,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=2376 /prefetch:8
              3⤵
                PID:3060
              • 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\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --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=3600,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=3632 /prefetch:1
                3⤵
                  PID:4080
                • 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\Roaming\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=2812,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4764 /prefetch:8
                  3⤵
                    PID:4452
                  • 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\Roaming\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=792,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4768 /prefetch:8
                    3⤵
                      PID:4588
                    • 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=10.0.19041.4355 --string-annotations --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --gpu-preferences=UAAAAAAAAADoAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAABCAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --always-read-main-dll --field-trial-handle=4860,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4936 /prefetch:8
                      3⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1748
                    • 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\Roaming\Bootstrapper (1).exe\EBWebView" --webview-exe-name="Bootstrapper (1).exe" --webview-exe-version=1.0.2 --embedded-browser-webview=1 --embedded-browser-webview-dpi-awareness=2 --always-read-main-dll --field-trial-handle=4936,i,1975161923846771684,4619231956318971559,262144 --disable-features=msSmartScreenProtection --variations-seed-version --mojo-platform-channel-handle=4864 /prefetch:8
                      3⤵
                        PID:4472

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        settings.dat

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 930ef5b7b72840483ac103763c57e59028c3e603a25b29e37f3c701e3a6c5407
                        • MD5 SHA1 SHA512 TLSH

                        settings.dat

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Crashpad\settings.dat
                        • Size 280B
                        • SHA256 e88f965f3b26dbd92a7556fa991516c125b4982cff8f6c3b4f58fdd0f9bc0e6f
                        • MD5 SHA1 SHA512

                        throttle_store.dat

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Crashpad\throttle_store.dat
                        • Size 20B
                        • SHA256 41c91a9c93d76295746a149dce7ebb3b9ee2cb551d84365fff108e59a61cc304
                        • MD5 SHA1 SHA512

                        the-real-index

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Code Cache\js\index-dir\the-real-index
                        • Size 72B
                        • SHA256 bae5ca4f6a9f976ccfba76aa7adfd7efac033bab15e1c52b6285704783e71a70
                        • MD5 SHA1 SHA512 TLSH

                        the-real-index~RFe585918.TMP

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Code Cache\js\index-dir\the-real-index~RFe585918.TMP
                        • Size 48B
                        • SHA256 ea0075d58e1f1c71c729e70305e34ffee2d511cf4e7ffe8b9f78a41ac23f0613
                        • MD5 SHA1 SHA512

                        CURRENT

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Extension Rules\CURRENT
                        • Size 16B
                        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                        • MD5 SHA1 SHA512

                        MANIFEST-000001

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Extension Scripts\MANIFEST-000001
                        • Size 41B
                        • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
                        • MD5 SHA1 SHA512

                        Network Persistent State

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Network\Network Persistent State
                        • Size 611B
                        • SHA256 9116c8bf6d570bed9cf2dc345a8693ee9a51bf489275f73b7e6528cdf65a8fca
                        • MD5 SHA1 SHA512 TLSH

                        Network Persistent State

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Network\Network Persistent State
                        • Size 59B
                        • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
                        • MD5 SHA1 SHA512 TLSH

                        SCT Auditing Pending Reports

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Network\SCT Auditing Pending Reports
                        • Size 2B
                        • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                        • MD5 SHA1 SHA512

                        Preferences

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Preferences
                        • Size 6KB
                        • SHA256 92d2a626f7b751101a39ab3d66d94cc1de523d22837af00739b24852c72113e1
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Preferences~RFe58a42a.TMP

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Default\Preferences~RFe58a42a.TMP
                        • Size 6KB
                        • SHA256 56d62eef17f228135881fb526038ae0abc0335b43ff61b8ba95cf6408e89dfc3
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        data_0

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\GrShaderCache\data_0
                        • Size 8KB
                        • SHA256 d6a5fe39cd672781b256e0e3102f7022635f1d4bb7cfcc90a80fffe4d0f3877e
                        • MD5 SHA1 SHA512 SSDEEP

                        data_1

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\GrShaderCache\data_1
                        • Size 264KB
                        • SHA256 902f30c1fb0597d0734bc34b979ec5d131f8f39a4b71b338083821216ec8d61b
                        • MD5 SHA1 SHA512 SSDEEP

                        data_2

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\GrShaderCache\data_2
                        • Size 8KB
                        • SHA256 ec1702806f4cc7c42a82fc2b38e89835fde7c64bb32060e0823c9077ca92efb7
                        • MD5 SHA1 SHA512 SSDEEP

                        data_3

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\GrShaderCache\data_3
                        • Size 8KB
                        • SHA256 e09f42c398d688dce168570291f1f92d079987deda3099a34adb9e8c0522b30c
                        • MD5 SHA1 SHA512 SSDEEP

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Local State
                        • Size 1KB
                        • SHA256 bef844d3f5f54171f340a24d59864e0a782e2179cba282f4ea04d4ee283fe7df
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Local State
                        • Size 2KB
                        • SHA256 770e4f17fe191da1b43365e8e09532ab911a9e29e0ea93214c02b849d57cd86d
                        • MD5 SHA1 SHA512 TLSH

                        Local State

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Local State
                        • Size 16KB
                        • SHA256 134a74c1e90468f88ab476e026918109ce6bfa417e7e3a1752af197203071e88
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        Local State~RFe5806a2.TMP

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\Local State~RFe5806a2.TMP
                        • Size 1KB
                        • SHA256 5501f5d2a251d6b19b1ef9deb97a3139d86582178138b569a18ba28fbaff44dd
                        • MD5 SHA1 SHA512 TLSH

                        cdc1a09f-db66-436c-a214-bea11f7194b9.tmp

                        • Path C:\Users\Admin\AppData\Roaming\Bootstrapper (1).exe\EBWebView\cdc1a09f-db66-436c-a214-bea11f7194b9.tmp
                        • Size 3KB
                        • SHA256 18769f29db64b77016e1a5cf19eedc8ab8de5874fd7ed81c8fbd94864023ee3a
                        • MD5 SHA1 SHA512 TLSH

                        memory/460-180-0x000001F595490000-0x000001F59549C000-memory.dmp

                        memory/460-179-0x000001F595460000-0x000001F59548E000-memory.dmp

                        memory/460-181-0x000001F59E3F0000-0x000001F59E419000-memory.dmp

                        memory/460-182-0x000001F59E420000-0x000001F59E45B000-memory.dmp

                        memory/956-200-0x000002509AE00000-0x000002509AECD000-memory.dmp

                        memory/956-26-0x00007FFE4E650000-0x00007FFE4E651000-memory.dmp

                        memory/1748-378-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-376-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-383-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-384-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-386-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-387-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-388-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-385-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-382-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/1748-377-0x0000016894E70000-0x0000016894E71000-memory.dmp

                        memory/3060-93-0x00007FFE4D1E0000-0x00007FFE4D1E1000-memory.dmp

                        memory/3060-92-0x00007FFE4E980000-0x00007FFE4E981000-memory.dmp

                        memory/4080-111-0x00007FFE4E650000-0x00007FFE4E651000-memory.dmp

                        memory/4080-201-0x000001D05C700000-0x000001D05C7CD000-memory.dmp

                        memory/4920-349-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-313-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-183-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-249-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-0-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-204-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-226-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-219-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp

                        memory/4920-404-0x00007FF6848F0000-0x00007FF6873F9000-memory.dmp