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Analysis

  • max time kernel
    52s
  • max time network
    54s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2023, 03:08

General

  • Target

    https://securemail.commonspirit.org/formpostdir/securereader?id=VuWLWO4dJ4mFTjezWOXdYVIUEkM59ekP&brand=3502e25accec17455

Score
5/10

Malware Config

Signatures

  • Drops file in System32 directory 2 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 5 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" "--simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT'" https://securemail.commonspirit.org/formpostdir/securereader?id=VuWLWO4dJ4mFTjezWOXdYVIUEkM59ekP&brand=3502e25accec17455
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffce86b9758,0x7ffce86b9768,0x7ffce86b9778
      2⤵
        PID:2304
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1800 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:2
        2⤵
          PID:4972
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2172 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:8
          2⤵
            PID:4748
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2252 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:8
            2⤵
              PID:1440
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3172 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:1
              2⤵
                PID:784
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3196 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:1
                2⤵
                  PID:2824
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5068 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:8
                  2⤵
                    PID:644
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5328 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:8
                    2⤵
                      PID:648
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=9 --mojo-platform-channel-handle=4984 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:1
                      2⤵
                        PID:3872
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --enable-chrome-cart --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=3436 --field-trial-handle=1816,i,3086521158235500640,198650119414992374,131072 /prefetch:1
                        2⤵
                          PID:1772
                      • C:\Windows\System32\svchost.exe
                        C:\Windows\System32\svchost.exe -k netsvcs -p
                        1⤵
                        • Drops file in System32 directory
                        • Checks processor information in registry
                        • Enumerates system info in registry
                        PID:2616
                      • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                        1⤵
                          PID:4868

                        Network

                        MITRE ATT&CK Enterprise v6

                        Replay Monitor

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                        Downloads

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity

                          Filesize

                          538B

                          MD5

                          b785ea0d5eb25bc69a04fdd0d7658545

                          SHA1

                          1044ab95cf82039fda7345909556e65862914e4b

                          SHA256

                          e728c577309535e7d1d57ca6e625a6517765ad2d4f747b60e177ac0a31f0334f

                          SHA512

                          fc9d473649e148a8b6977c6fe4c6eaafadfe9ab55189012d179dd01339dd3188bdcc824da4a12ba147b7da0147fc804f26b63d21f96fbc891338ee7d0717c8c3

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          4KB

                          MD5

                          fdb4d579bf3c303268546c8e93ef5b44

                          SHA1

                          7c4b4a2bae857127f7b57f8610c49d219229d733

                          SHA256

                          60a37ea3d07241a932c84905d3ad2a997437dce022698fe5b57d1582fde54a2c

                          SHA512

                          43878cad1a67161a563c8dbb5cb75e1cfa0e16c179cd43bb5f1df9b93990ffcfe40dab3bd5496ad0c19ca8ca5f431e1502505f31d64f88ae5b4d592fed84093a

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                          Filesize

                          4KB

                          MD5

                          ebd8c00ea802c4bd3fcbd74491089fe5

                          SHA1

                          d82c8b4df1adeb976deb36be0ff930c8172b5252

                          SHA256

                          7e551a92c1c96d0078ede6dfd0a70454d0aacc613a43226c339cc4270aabf159

                          SHA512

                          4d54e6a5d16c3290392d2e18612f790e8c6d74b3a50f953be61f1411ee7c47bf801edb00055d47a031f20bab106a216d0bdae94990f852fa8d244db0c2fe31b6

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                          Filesize

                          149KB

                          MD5

                          0e247b553778ccd18fffc35c063693e5

                          SHA1

                          d87438fc69a8bebc51dcd8519f3c85b14eb546c2

                          SHA256

                          4970873a1ea66e91d076bd4186ecbc706416fdeb828bb74456cb8c91c5d3fd42

                          SHA512

                          83b7f545c531757807dc79ded20f5b96c2abd8c5b3ad42e5bd1b2e6677fbd5edfbc6c5690415f0e4477fd6c3145f296167a5c5b3df9de2f3bc25c2711e9c5947