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Analysis

  • max time kernel
    142s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231025-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231025-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/10/2023, 23:34

General

  • Target

    Bloxstrap.exe

  • Size

    7.6MB

  • MD5

    5ecb1c383fdb0541cfec11e114b92f2e

  • SHA1

    7be26d8b869828512d758c54807f1021fe345b28

  • SHA256

    06ea33741bc5bbc17efffdb33625da2e934f5164575db43ed31a21b63fa06825

  • SHA512

    8273f12beffcbc3d5bfa24a5760aa602103f70f7e7f32fccca04e1ebf6c655599dbbc24f801b6219759149f801392429a39ea02957d977763b91c185ae2f47a7

  • SSDEEP

    98304:0Ld5Dcd5DDTsed5D29T00hFOYoHwfLk3vSmaR0+Mc4AN0edaAHDfysrTlx:04sdlObAbN0+

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
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Bloxstrap.exe
    "C:\Users\Admin\AppData\Local\Temp\Bloxstrap.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3728
    • 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=6.0.22&gui=true
      2⤵
      • Enumerates system info in registry
      • NTFS ADS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1756
      • 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=0x100,0x104,0x108,0xdc,0x10c,0x7fff1b8f46f8,0x7fff1b8f4708,0x7fff1b8f4718
        3⤵
          PID:4640
        • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2220 /prefetch:3
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4884
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2088 /prefetch:2
          3⤵
            PID:2196
          • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2632 /prefetch:8
            3⤵
              PID:5024
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=3388 /prefetch:1
              3⤵
                PID:3240
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=3412 /prefetch:1
                3⤵
                  PID:1108
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=5064 /prefetch:1
                  3⤵
                    PID:3992
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6060 /prefetch:1
                    3⤵
                      PID:4428
                    • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5736 /prefetch:8
                      3⤵
                        PID:4580
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=5756 /prefetch:1
                        3⤵
                          PID:4784
                        • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=6152 /prefetch:8
                          3⤵
                            PID:4520
                          • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6380 /prefetch:8
                            3⤵
                              PID:3544
                            • 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=2080,6649565749997864074,2098611542555828291,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6380 /prefetch:8
                              3⤵
                              • Suspicious behavior: EnumeratesProcesses
                              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=2080,6649565749997864074,2098611542555828291,131072 --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=5192 /prefetch:1
                              3⤵
                                PID:5032
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=5188 /prefetch:1
                                3⤵
                                  PID:1984
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=6568 /prefetch:1
                                  3⤵
                                    PID:216
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=6504 /prefetch:1
                                    3⤵
                                      PID:4632
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2080,6649565749997864074,2098611542555828291,131072 --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=5528 /prefetch:2
                                      3⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:2944
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:3300
                                  • C:\Windows\System32\CompPkgSrv.exe
                                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                                    1⤵
                                      PID:4032

                                    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

                                      aed593b08b94f34dd8f68fd369652ac2

                                      SHA1

                                      3ce2a17e426e09c2fd9a8d2ab191fe29248f2d95

                                      SHA256

                                      5c0cdd5dc1bccf7e3ffa8568fdd2fe35f3edc85832f3d11331aced965aaeeba7

                                      SHA512

                                      16b34c29d8ea3793f7d4491847d2fecae2c6c9d7b7b1ec16d1367828d0a4da4cdbf912c2040bc0ca98ac32cd701355ddd16b4865629d51bae2527e1a05411137

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

                                      Filesize

                                      384B

                                      MD5

                                      c3b77c22a728b5b42a0b3484b740b70b

                                      SHA1

                                      e9e43c4358b576cdfe3c446dc0b36c308479be3f

                                      SHA256

                                      fd8222835db5a8efce20fb9c32f8ec9b3175e0715b56ebe06b9c0bac224b5f92

                                      SHA512

                                      4f02a80161ec273c85010aea74eb3a3a69090caeae1176294e83cfc0a23a833e309a083e6cc10b7a590c3902946bfeae5ec99299f995949adbac7537d240860d

                                    • 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\Network Persistent State

                                      Filesize

                                      999B

                                      MD5

                                      75d9521bafd87d2c67a4c14bdc51690b

                                      SHA1

                                      76e8ee2157018afa6765548e5543a1accf880da7

                                      SHA256

                                      9c0a9149d4a8aae0ecdd26fe4db231f13e28f911173889868ef95e5820b541ce

                                      SHA512

                                      4375a2eed6ad8bbb128f675e5f6f7436e2bedd2091b0239e868e0492f8acdfb7c244c8cb5ded4bff8ca93482267367b7118c29a9a90a57e54ed22a26bb8a9685

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

                                      Filesize

                                      5KB

                                      MD5

                                      79d93613ad80b007c9b02b7b95c13d71

                                      SHA1

                                      83321b007ce028bcf68de7ff7308ec048b993019

                                      SHA256

                                      27790d652c90ea6827a8265b59f1dfa97d162fd793342b72c1a8c999c6a230eb

                                      SHA512

                                      a33b1040d3db5e617296b87a3725acf524fb8779647c8c172adf1caf039156dfb3f3ed11a17c69ee93df320477058fd5a7c47fd6c06618a34591450245ed8d5f

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

                                      Filesize

                                      5KB

                                      MD5

                                      ef9f9da972534ef90e631c05db27064d

                                      SHA1

                                      69d8d45d3dac9cd69bd0c9840359525fbfbb19b1

                                      SHA256

                                      6b80f5dccae7cefb63b92a4ce936443a47bee456a1f191c8abf4ff6267a18cb0

                                      SHA512

                                      18b3d8e0d5b5fb2a8440277e3a7f53a2d707aeea6667bd5a12bb731f4f25daab07be105db85ab2750f601246b32066e1ed596a3863533a2d0af91963872c2d90

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

                                      Filesize

                                      6KB

                                      MD5

                                      4e4f2d3c639c84824a547dc1db966743

                                      SHA1

                                      890ba51db922273b3aad140bdc838aae31309dd6

                                      SHA256

                                      2b0349cf7618151d6a844031c902dd198a2a5982bf04b0ec5db1f5e55f05e371

                                      SHA512

                                      b5050ad4a853be7fee09655c7e1ac57c3d39ef1ab03ab8d13a31a408cd4d910d1e123c1d19843bc8b8b48747d80f594db539ed256ca43966e58aaa28b78d3b3c

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

                                      Filesize

                                      24KB

                                      MD5

                                      e2565e589c9c038c551766400aefc665

                                      SHA1

                                      77893bb0d295c2737e31a3f539572367c946ab27

                                      SHA256

                                      172017da29bce2bfe0c8b4577a9b8e7a97a0585fd85697f51261f39b28877e80

                                      SHA512

                                      5a33ce3d048f2443c5d1aee3922693decc19c4d172aff0b059b31af3b56aa5e413902f9a9634e5ee874b046ae63a0531985b0361467b62e977dcff7fc9913c4d

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

                                      Filesize

                                      874B

                                      MD5

                                      73741261306a9fe237a5cfa146d38b06

                                      SHA1

                                      7e86ac914f6896a13d7beff373e39fc0263f4e37

                                      SHA256

                                      9e56c3f9b21fdb467cbb551b75a61396c7b5ca603de601516f57a2c0594978f5

                                      SHA512

                                      e1225e6898d44b6ee208393350daff3bc0b1778a37a7485e0f0d6f7048be0243fa7806e9d3b252a801952728e7c8913ba23d8e753543af9348638be7d7dc6024

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

                                      Filesize

                                      874B

                                      MD5

                                      4230a4f4cfe044940efb98af3f080d27

                                      SHA1

                                      4b37d3ec2ab0d9d02fb15ffa4752506c78571dd7

                                      SHA256

                                      6bfbcc5f60f9c29b0344641392d5fb3db7cd6422832741feb1561547b407702e

                                      SHA512

                                      4a760356653177b297eb0dee6447d47682116ee5f189d784b1aa3285b18e3c7f65cbb406a592147700fc8670a70e19029d86a158afc081f4469757ddb9b1c6e2

                                    • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity~RFe57d6c8.TMP

                                      Filesize

                                      706B

                                      MD5

                                      4de3f5c483df2f2be12dbec63ae8c18a

                                      SHA1

                                      48ea564deea8b7e39f7270151aa591a66be496c4

                                      SHA256

                                      3ead4687c0345fc599b1afa7457b86eca4f6df0d5766806b419898280addd198

                                      SHA512

                                      a0637fa372a15a4dddf9aa2ea53d81ba2697f9994b5d3bd2a46c43c131c2c94731e1e86a97e473fa047c52142d964869293c0ea1ab39b7d63605b75102ed7be3

                                    • 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

                                      5897de80e4bb1b6918156bfd3fd46abd

                                      SHA1

                                      2ec9a9d05f217f5ad67ff93a4b4d15bc15ff8359

                                      SHA256

                                      02507ef2498e13823dd05664cd650acd5efe14bf8dfdbf4add06930a35cbc94b

                                      SHA512

                                      87a63a7af54d261270b606921359d99512af1bb4930a939b26c756eebbad4d81f9ddb735670f88beca68fc10a9b8eca04f87e47f8f1e80882af8c7c783f643cb