Analysis

  • max time kernel
    161s
  • max time network
    193s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/10/2023, 10:06

General

  • Target

    clfSchool.exe

  • Size

    3.3MB

  • MD5

    ad45ee315d2f046ec1038df93df16ba2

  • SHA1

    0a9c500ff65f1437c7ec9ec0da5745d5580257ee

  • SHA256

    54809dbdf16b8748f2f17f35c6f0927d2a2b5d392deb07c007cc37d9bd2816b6

  • SHA512

    04d0d8566df3e77ddc8fde6d9ce3bddab8bc6737e326c1f4c722108aa74b107a4b5baf62afa7b8de1b8d782bc9102539e3ed0fd2fe1b2a2463bb6a0b126c82e9

  • SSDEEP

    24576:TGWdDug9WdsWdJWddWdP8et3Wd/h+u2lxJuV:TGWQ8W+WHWrWh8oWTQxEV

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\clfSchool.exe
    "C:\Users\Admin\AppData\Local\Temp\clfSchool.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2152
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=win10-x64&apphost_version=6.0.21&gui=true
      2⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1568
      • 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:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff8bde746f8,0x7ff8bde74708,0x7ff8bde74718
        3⤵
          PID:1228
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2096 /prefetch:2
          3⤵
            PID:4236
          • 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 --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2160 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4184
          • 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 --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2908 /prefetch:8
            3⤵
              PID:4316
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3376 /prefetch:1
              3⤵
                PID:3920
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3392 /prefetch:1
                3⤵
                  PID:4248
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4288 /prefetch:1
                  3⤵
                    PID:3688
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5376 /prefetch:1
                    3⤵
                      PID:3136
                    • 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 --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5352 /prefetch:8
                      3⤵
                        PID:4512
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5760 /prefetch:1
                        3⤵
                          PID:4796
                        • 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.UtilReadIcon --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=6104 /prefetch:8
                          3⤵
                            PID:1368
                          • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6440 /prefetch:8
                            3⤵
                              PID:4968
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6440 /prefetch:8
                              3⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:552
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3580 /prefetch:1
                              3⤵
                                PID:4444
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3572 /prefetch:1
                                3⤵
                                  PID:1832
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5876 /prefetch:1
                                  3⤵
                                    PID:2940
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5800 /prefetch:1
                                    3⤵
                                      PID:4656
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2080,18113198335701284496,16141665210532978325,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=6336 /prefetch:2
                                      3⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:4208
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:456
                                  • C:\Windows\System32\CompPkgSrv.exe
                                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                                    1⤵
                                      PID:4192

                                    Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                      Filesize

                                      152B

                                      MD5

                                      16c2a9f4b2e1386aab0e353614a63f0d

                                      SHA1

                                      6edd3be593b653857e579cbd3db7aa7e1df3e30f

                                      SHA256

                                      0f7c58a653ae1f3999627721bad03793edc1e9d12e8f5253c30b61b8478f5c81

                                      SHA512

                                      aba1ed22c7b9ae1942d69a7cd7a618597300ae5c56be88187ddec6227df056f81c1d9217778d87fa8c36402bce7275d707118ff62d3a241297738da434556e06

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                      Filesize

                                      408B

                                      MD5

                                      e5ffaad22cd32cfb9204e6df5fc2c214

                                      SHA1

                                      20b61fe6be911cfba56643e4e0f028b3b715e4ae

                                      SHA256

                                      14a608eea28617c41033183e84a8750e34864742a97aea5cebb23f1f0095a995

                                      SHA512

                                      0663019294c9f9633415d8fd94ab94e1c4378b6cb86b0d805c6ff82655cdb48fc086b27aa5c2b7fbb378247ea66017564d5b23baa88588aac53ea7bb40b02c31

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                      Filesize

                                      1KB

                                      MD5

                                      011155185bcf6c8cbc2558a0048c4f11

                                      SHA1

                                      42b916ebb80ef571b83609ab70e7bd267c8d50ca

                                      SHA256

                                      a3d47b3cc903e7d9b4506243ccd0d5c84d179be717b863e230945106e4cbd70f

                                      SHA512

                                      c5af9afbc8bdc4f20b072d99c365b9a58ee85bf14f1a5c15cecd9a62e7fcc2e9c9dd792bc44451b5e55e00212c2da0cbe3bcc5a9f4d57e97c153881396f9f6dc

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                      Filesize

                                      980B

                                      MD5

                                      cb828670af40c03a6ebba981edbbc46d

                                      SHA1

                                      e423187f373218e7d834a25f6319ae2f0b6c4185

                                      SHA256

                                      8125f322319b933f22eccf80aac34670f821ae0b7e6a370b8886213181185411

                                      SHA512

                                      dc71dd167689bbd44e770d8afb20005a37edcd66157d06531e80c8919c414a4e84cb638c4c5466575a23e13a3386049ba806280bece36bc8af8134d78f7ef680

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                      Filesize

                                      111B

                                      MD5

                                      285252a2f6327d41eab203dc2f402c67

                                      SHA1

                                      acedb7ba5fbc3ce914a8bf386a6f72ca7baa33c6

                                      SHA256

                                      5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026

                                      SHA512

                                      11ce7cb484fee66894e63c31db0d6b7ef66ad0327d4e7e2eb85f3bcc2e836a3a522c68d681e84542e471e54f765e091efe1ee4065641b0299b15613eb32dcc0d

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                      Filesize

                                      5KB

                                      MD5

                                      1537ad2cd924f7e7519196007572c81b

                                      SHA1

                                      6ce8935eaa7d06acdaf8a8eaaf104eb91b7d8d52

                                      SHA256

                                      c5d038afa3c08111d0d6a0668bb3fd1b1c9e015a51a10820507533c790c51e90

                                      SHA512

                                      e29ad7893dfb79a952823878641e7e0322ed4af618265a4dddd8fa31c5496207d374f059b87e56b143e3e7d667bbd6755b25a0a5faf3a080b675e4a2b0153306

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                      Filesize

                                      5KB

                                      MD5

                                      9b628ee0922e4277a655c6320fe20c33

                                      SHA1

                                      76dc40ac4758aaa5bfa71e3e53b226bedd7f4982

                                      SHA256

                                      4fdcd56993084787475807a67ed83765314fd70a41b59d313640945389c1cb9f

                                      SHA512

                                      3680119e6659d3c7400431559d9ef0af2ce725b3179ae59ecbda93ee2d9489427b8414a6ac1b18121b4237440a09428e43ca52279a7fa514def38ad5b189c7ff

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                      Filesize

                                      6KB

                                      MD5

                                      ef220f6ce97cdaa2a2e952a39798324b

                                      SHA1

                                      e520555191e939d4a0cb0aadbef51dd0a442a1f3

                                      SHA256

                                      1727b0db1fae9e76a4587d1bc4028ed82a87efd30d12a96cded1599aab0a6388

                                      SHA512

                                      d6c52e73e2418320e4c7a5e035df67d11da977167473e336d8e49c10d8ac7425f161acdd3a9861e3cfa8988a3cb82d625c963eac4dd67f408fa0a4127e5b2c34

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences

                                      Filesize

                                      24KB

                                      MD5

                                      699e3636ed7444d9b47772e4446ccfc1

                                      SHA1

                                      db0459ca6ceeea2e87e0023a6b7ee06aeed6fded

                                      SHA256

                                      9205233792628ecf0d174de470b2986abf3adfed702330dc54c4a76c9477949a

                                      SHA512

                                      d5d4c08b6aec0f3e3506e725decc1bdf0b2e2fb50703c36d568c1ea3c3ab70720f5aec9d49ad824505731eb64db399768037c9f1be655779ed77331a7bab1d51

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity

                                      Filesize

                                      706B

                                      MD5

                                      2f55336e9803d1282cc44432515de74e

                                      SHA1

                                      efc9eb95b2c3e4926a1ac396a4f435cb7c13d072

                                      SHA256

                                      707c9cdc04277c63bc39203d06c54f7c166d4dd5f62302f31e26faa408edae45

                                      SHA512

                                      e27bf44c20fc64cec396385b98874974ebca98b016f4a42b408186fd6f714fb0c3ffd2ad93a3b676c4f7eb481252a50f16b3f23bb6a5999875829f6242746ff8

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity

                                      Filesize

                                      874B

                                      MD5

                                      41f42d87b8945fc96ee9a5524ed6aadd

                                      SHA1

                                      0860e10476bb4ef34c3cd97668913a5fa5a9e2e1

                                      SHA256

                                      f400971c1bfe321d68e568a5cc232bbc191a2dc98169ac0f861bd399a81977b0

                                      SHA512

                                      8cdd32a5374b926a84bbfb9fda3deabf4432a5b88816575d38a916294ee0f7cba12866caa586a8fa00cfa49fd9532863fe4a9213ba7c765631f3c87e4c6719f5

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity

                                      Filesize

                                      874B

                                      MD5

                                      ca9f79acd8f11dadd8652fdf2bcd5984

                                      SHA1

                                      1319857265957ebdc7ed156e9f3cd133e79bb3a2

                                      SHA256

                                      894b10f230059ad7ed31858b3875959f6cf71e8241c4f2552f173f818846609e

                                      SHA512

                                      4111b434d1c3e22120fd393cbbbea44bdff57e6fa4a3ca2d5ee82d5376deb45c5b75e42e14d225971c2ecc5b2cb25494c0e4c545f0df36b6c3832f27a049ba38

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity~RFe5989c8.TMP

                                      Filesize

                                      371B

                                      MD5

                                      1c6db60f66d2a11bea3080dfc91b0dd4

                                      SHA1

                                      5d902499d9f6ec94f7c9d38a832fd37ae31561a7

                                      SHA256

                                      d91e18285025a9ae23d3ec011b02a380c8f79d7e8f9a3a8339c538a6d66620c0

                                      SHA512

                                      3b84e7da83f7f505920bb935859277b38f5207df156949c3874d2dce00f2063713ddc7369c2dd232ebc9a748ab444b5a5bc3319f9215043d5d7ff34b264d0a62

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                      Filesize

                                      16B

                                      MD5

                                      6752a1d65b201c13b62ea44016eb221f

                                      SHA1

                                      58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                      SHA256

                                      0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                      SHA512

                                      9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                      Filesize

                                      10KB

                                      MD5

                                      e35f8d5dbd6ef23a0dc87101252c264d

                                      SHA1

                                      af5505a1fdf3f379de2fb475012e1ff6bf27db80

                                      SHA256

                                      4782346719d703a7165dacf08fb5268206bdaca9b3fb618a2adf7e906f1135ec

                                      SHA512

                                      7e4a03830ea6188e9b5e1e89422f80e637fa6b88db4773c4c3dd5cb5bf2f7e7d178c2fcef30c0e5e5c9acb94c1ac550dd9f9fcb166a228c96ee6bdd0a01419bd