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Analysis

  • max time kernel
    494s
  • max time network
    560s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240214-en
  • resource tags

    arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    19/02/2024, 21:19

General

  • Target

    proext.exe

  • Size

    3.9MB

  • MD5

    b8ff3fa3797f21498614239d583cb636

  • SHA1

    23fa79658831b5f4714bde8f39b4dfef1dc25351

  • SHA256

    2d6916b87384d03a05d41e3a81e4aacb250d59b0333c4b3605a35b7ec58ecf57

  • SHA512

    1831021746de038b37334c29ff35a79c3501d3d67893240eaa84833ecc66712754706fde2539cbb3a3c028dca62439dbc7799dec7eef085a65eaad89dc0e2497

  • SSDEEP

    49152:jfLhJ9gW/ti8EeLn+CrsEGm1PEox7HnGe6lWnRD4kf00E2aNnuInZIU6ieHE3/A:jfLjp+2sX5G6Ab0e+mE3/A

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • 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 14 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\proext.exe
    "C:\Users\Admin\AppData\Local\Temp\proext.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\system32\cmd.exe
      "cmd.exe" /C start https://github.com/vytrol/ProExt/raw/main/bin/proext.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3588
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://github.com/vytrol/ProExt/raw/main/bin/proext.exe
        3⤵
        • 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:1184
        • 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=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7fff41523cb8,0x7fff41523cc8,0x7fff41523cd8
          4⤵
            PID:1028
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1916 /prefetch:2
            4⤵
              PID:3592
            • 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=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2284 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:3616
            • 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=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2764 /prefetch:8
              4⤵
                PID:4920
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=3308 /prefetch:1
                4⤵
                  PID:2376
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=3328 /prefetch:1
                  4⤵
                    PID:2160
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5052 /prefetch:1
                    4⤵
                      PID:4388
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=4788 /prefetch:1
                      4⤵
                        PID:2672
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=5316 /prefetch:1
                        4⤵
                          PID:2052
                        • 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=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5652 /prefetch:8
                          4⤵
                            PID:896
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5248 /prefetch:1
                            4⤵
                              PID:2020
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5632 /prefetch:1
                              4⤵
                                PID:1260
                              • 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 --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6044 /prefetch:8
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:3044
                              • C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6296 /prefetch:8
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:2760
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1876,9901965990924242908,6598334751182265266,131072 --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=10.0.22000.1 --gpu-preferences=SAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAQAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=2908 /prefetch:2
                                4⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:3412
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:3552
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:244

                            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

                              4aa37444d26e81e6f3837eb15bcaa892

                              SHA1

                              3d00127097989429f311f33daa8380ad7af4cb56

                              SHA256

                              ab703e5dfb5b92527f094fad6ec479839375907700be9a2fd1c3cb9105f9e655

                              SHA512

                              f21a34c234433a688602b2b56d6844f224641bea45b8585f77f4853e192107a65c5e104e10cd86c1d97ff41a22fd05d65224993803b22113ed0b517e686c5176

                            • 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

                              261B

                              MD5

                              2c2e6472d05e3832905f0ad4a04d21c3

                              SHA1

                              007edbf35759af62a5b847ab09055e7d9b86ffcc

                              SHA256

                              283d954fa21caa1f3b4aba941b154fab3e626ff27e7b8029f5357872c48cbe03

                              SHA512

                              8c4ce1ea02da6ffb7e7041c50528da447d087d9ee3c9f4a8c525d2d856cf48e46f5dd9a1fedd23dd047634e719c8886457f7e7240aa3cc36f1a6216e4c00ee37

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

                              Filesize

                              5KB

                              MD5

                              fe2f4612141ff14285cf270e4d08f559

                              SHA1

                              2f50b88e55ad9ee5e0ccc4492f4833eaa232d843

                              SHA256

                              1e553232128e4dda14cade97d0f08cc6616b2f71aeb5f070e694f6e687cb3375

                              SHA512

                              90366ecf6ed6e444011bf39fa2401fb689256344972f8c32b8469bb1598787a5aacd1899485b42215458a4ce114b76bb237db309dd487a7172d39ae2f22291e1

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

                              Filesize

                              5KB

                              MD5

                              e208c5558e391a38c8dc33667f05664d

                              SHA1

                              709d6f226a235c42f97d4f93d74dd6154a8510de

                              SHA256

                              53608753ebd339ad75c17f24b304ceedb1540490a131ebe282471408ae742ac4

                              SHA512

                              5859843bbe9f112de4c19dd54fb36fb99cfc19258c4230c8b041474949579a3ea583606eb75fdec3830e44825c6ab74315781bd103dca0502763f2b8ae45fee7

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

                              Filesize

                              25KB

                              MD5

                              40833cdbd5d7994ce8fa41b927a81b3c

                              SHA1

                              7d0113a707e380a6c12a7581af0184b6e49ba481

                              SHA256

                              857a656a5e259b4671d5778cf4c93bf038e060b195cb7e9fb3d9c5bf25c8f2f7

                              SHA512

                              38d77bf562e1abeffd91ada2832a160d29509ed748751f43de43c5846c9fffab53884fe31b19ee7336c36557d726b9ff17dcdda0f311d8f04407e44748f2f4e7

                            • 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

                              78c7ab6f62e1fee8630ddfc1a8d45564

                              SHA1

                              b187bb3c33800629ef250d12ba1aebc7797d4c0d

                              SHA256

                              300178461007540b59b90204b18071863362d47616d209f68d41857ad9ecfe3b

                              SHA512

                              0349456f38375ab6c000823687ea40484d4ebf0f5fd9bd1b5775eee4bd1f3ba8632a15818dde11a5fff2fe74b6b5c5f82fe8597a08aceda082fd2e70cc376cd8

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

                              Filesize

                              10KB

                              MD5

                              c0875548eb876a2319c6347ad1e66a6b

                              SHA1

                              5a3c6457ada52c126d34da8aa508a6a356cf6cfa

                              SHA256

                              ba142364fcc827e0246719b22d4ff559e2de81ae6e20c96bf1eef9ab9054d51a

                              SHA512

                              6e33cf758d040b2b3ca7719afd692e17755d760a2648f7415417dee3294b094d07942a44f7ae8b54db636829e09ece1833cd0a4d5e6b4897fe94dcd7ad594669

                            • C:\Users\Admin\Downloads\Unconfirmed 21205.crdownload

                              Filesize

                              4.7MB

                              MD5

                              e7e64afffc2594952cabd4cf070b16f5

                              SHA1

                              208728253b1e4f3845744ba55bdade69b803a3b3

                              SHA256

                              a7e18f8f2a8f879877bf352a4f784752155d6c8a135882f64727438037aa25d2

                              SHA512

                              a0037d62479f6e4c33e422a598b72df4ce807ae1943b542c233ee1a98c5c2bcb50de9c3a33446b04ad5e21f6eab9520e2c9396321e07786fd6799a3da336c9dc