Analysis

  • user interaction
    yes
  • max time kernel
    33s
  • max time network
    37s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    03/09/2026, 18:54

General

  • Target
    https://claude.ai/install.ps1
  • Sample260903-xkd3jsbb85
Score
10/10

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://downloads.claude.ai/claude-code-releases

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 4 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 42 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 34 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--start-maximized --disable-default-apps --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://claude.ai/install.ps1
    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:3956
    • 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,0x240,0x234,0x24c,0x7ff84a22c188,0x7ff84a22c194,0x7ff84a22c1a0
      2⤵
        PID:1444
      • 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=1876,i,10260690545666295435,6658172619437566110,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=2228 /prefetch:3
        2⤵
        • System Time Discovery
        PID:3792
      • 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=1620,i,8668435276612452567,14358530831490966474,262144 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=2196 /prefetch:2
        2⤵
          PID:4192
        • 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=2400,i,4195891877681536608,232122777205161572,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=2556 /prefetch:8
          2⤵
            PID:1580
          • 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=3432,i,2570714690531382218,6824641722159155556,2097152 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=3476 /prefetch:1
            2⤵
              PID:3752
            • 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=3444,i,5900283430362468401,1197275823943461568,2097152 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=3480 /prefetch:1
              2⤵
                PID:1948
              • 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=4160,i,934051816397024704,63718267130677944,2097152 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=4276 /prefetch:1
                2⤵
                  PID:2612
                • 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=4172,i,7920268285324281939,18085979547705718693,2097152 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=4296 /prefetch:2
                  2⤵
                    PID:1820
                  • 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=5072,i,5333569009017082457,9377774053138504762,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=5028 /prefetch:8
                    2⤵
                      PID:2016
                    • 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=4860,i,8401834859289044261,7392248184243898840,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=5088 /prefetch:8
                      2⤵
                        PID:2752
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --lang=en-US --service-sandbox-type=collections --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5636,i,10552620678064101418,10332430636189000499,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=5640 /prefetch:8
                        2⤵
                          PID:2668
                        • 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 --disable-gpu-compositing --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=12 --always-read-main-dll --metrics-shmem-handle=5676,i,7047798112842411670,4300525893732706700,2097152 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=5696 /prefetch:1
                          2⤵
                            PID:3832
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5920,i,8261112012556624749,4344287572169850492,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=5960 /prefetch:8
                            2⤵
                              PID:2420
                            • 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=6480,i,10643196186455051137,3544685942404338048,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=6496 /prefetch:8
                              2⤵
                                PID:4836
                              • 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=6480,i,10643196186455051137,3544685942404338048,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=6496 /prefetch:8
                                2⤵
                                  PID:3168
                                • C:\Windows\System32\notepad.exe
                                  "C:\Windows\System32\notepad.exe" "C:\Users\Admin\Downloads\bootstrap.ps1"
                                  2⤵
                                  • Opens file in notepad (likely ransom note)
                                  PID:2380
                                • 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=4296,i,8569252872528739158,8194210919661299861,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=4168 /prefetch:8
                                  2⤵
                                    PID:4780
                                  • 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=4328,i,2964402720207303136,6765881159281571443,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=4796 /prefetch:8
                                    2⤵
                                      PID:3760
                                    • 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=4304,i,14209572380469177896,2366585660793906092,524288 --field-trial-handle=2200,i,16823413081830893109,5037887656698331968,262144 --variations-seed-version --mojo-platform-channel-handle=6968 /prefetch:8
                                      2⤵
                                        PID:804
                                    • 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:2920

                                      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 ae53e618032c667892ed21a0d220c217b0a8d7911b3dee86b08e6a49f9b5961f
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            settings.dat

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                            • Size 280B
                                            • SHA256 6de34b260036ecaa4ce5839bc4a7ff7495e50b7b94349b12d9f840ca0e76da3b
                                            • MD5 SHA1 SHA512 TLSH

                                            settings.dat

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                            • Size 280B
                                            • SHA256 f5dece638cd89af82b06bd2fcb3d1738eef64d2275be237184ea8bff7af3fdfa
                                            • 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 6f8f1f401cdc278f10f689eab8ca727f6742af3396237c6f88eff22b45250614
                                            • MD5 SHA1 SHA512 TLSH

                                            the-real-index~RFe5884ac.TMP

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index~RFe5884ac.TMP
                                            • Size 3KB
                                            • SHA256 715a03275d6b8192b58124cd0b9db6635b75527537ba6639d1f4607c855e08d8
                                            • 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

                                            Edge Profile.ico

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Edge Profile.ico
                                            • Size 70KB
                                            • SHA256 31a226211c491e1b0832d4cd3cf34d97165e24a7ce4ec655259cd188f3a2bd88
                                            • 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

                                            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 b6d8fc75b1a3b1d077d908ec8bcdce4d5a66ec8a75c9856017d16a26a5934236
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            Secure Preferences

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences
                                            • Size 30KB
                                            • SHA256 59fdce1eefca950371fa2da6890b5554d3b119ebadecd2bcfae1a44528969136
                                            • 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 b0f2487e6151f83c27018ed76e7335699b5c78575d67769677d6e86dfba191ea
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 12KB
                                            • SHA256 297593cb6e8dfada03d84f8d59b2d06106aae902aac75e910c77a29700c475ff
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 18KB
                                            • SHA256 1fd7a4914c1df419cb54e9876a3794e5b3114323f23b7f503512bcb5197091ae
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 8KB
                                            • SHA256 2208a78ea59ab7d18f78293bd6675175291a8133614c19ca346542f4ea5424de
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            Local State

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                            • Size 8KB
                                            • SHA256 2b3c8162986b51d9e0d1d156394bf2f0cae9c68e0daea4ba690d1fb3058b6c2b
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres

                                            • Path C:\Users\Admin\AppData\Local\Microsoft\TokenBroker\Cache\5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres
                                            • Size 2KB
                                            • SHA256 6a2675e22a2d04493ba0b3c6e64d24bb1c207f4648b1d2c639af63a5e36a9488
                                            • MD5 SHA1 SHA512 TLSH

                                            bootstrap.ps1

                                            • Path C:\Users\Admin\Downloads\bootstrap.ps1
                                            • Size 3KB
                                            • SHA256 cd17c6b555f761d60373659824bf805e1510538226e4c7028e19d7494937a333
                                            • MD5 SHA1 SHA512 TLSH