Resubmissions

09/07/2024, 17:28

240709-v16fmaxcng7

09/07/2024, 17:22

240709-vx2y2axapg7

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/07/2024, 17:28

General

  • Target
    Solara.Dir/Microsoft.Web.WebView2.Core.dll
  • Size 488KB
  • Sample240709-v16fmaxcng
  • SHA256 5e7faee6b8230ca3b97ce9542b914db3abbbd1cb14fd95a39497aaad4c1094ca
  • MD5 SHA1 SHA512 SSDEEP
Score
5/10

Malware Config

Signatures

  • Drops file in System32 directory 2 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 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

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Solara.Dir\Microsoft.Web.WebView2.Core.dll,#1
    1⤵
      PID:2760
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      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:4344
      • 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:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.106 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ff91c8dcc40,0x7ff91c8dcc4c,0x7ff91c8dcc58
        2⤵
          PID:548
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1804,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=1800 /prefetch:2
          2⤵
            PID:904
          • 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 --no-appcompat-clear --field-trial-handle=2112,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=2192 /prefetch:3
            2⤵
              PID:4056
            • 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=service --no-appcompat-clear --field-trial-handle=2304,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=2276 /prefetch:8
              2⤵
                PID:2828
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3148,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=3168 /prefetch:1
                2⤵
                  PID:2680
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3280,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=3256 /prefetch:1
                  2⤵
                    PID:4700
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=3704,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=4600 /prefetch:1
                    2⤵
                      PID:3608
                    • 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 --no-appcompat-clear --field-trial-handle=4868,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=4924 /prefetch:8
                      2⤵
                        PID:2916
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=5132,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=5092 /prefetch:8
                        2⤵
                          PID:2524
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --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 --no-appcompat-clear --gpu-preferences=WAAAAAAAAADoAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=4764,i,4316529822240880899,17327790501899265424,262144 --variations-seed-version=20240709-050124.519000 --mojo-platform-channel-handle=5280 /prefetch:8
                          2⤵
                          • Drops file in System32 directory
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2584
                      • C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\123.0.6312.106\elevation_service.exe"
                        1⤵
                          PID:4832
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:432

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                Network Persistent State

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                • Size 1KB
                                • SHA256 1f2793669b6c7ded8893fc9418c7b783f8e7a2042b05d2ecef960f0d5a53576e
                                • MD5 SHA1 SHA512

                                SCT Auditing Pending Reports

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                                • Size 2B
                                • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                • MD5 SHA1 SHA512

                                TransportSecurity

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                                • Size 356B
                                • SHA256 9dfa98fcb15a4d96e33abaaabb0f8481dc2519b3a98b7675265132269450755a
                                • MD5 SHA1 SHA512

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 7KB
                                • SHA256 c78c595f68e0293a1bfe18ae0f38cc8656b5ab1caa8f7773423984d90216ae69
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 7KB
                                • SHA256 6f5727a4553601ab85fbab1b4d71d2776c9a375e4326292e4e39ed831cb70e60
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 8KB
                                • SHA256 b42d6ab282ff21c35c5c6df15f43e2f352708e644a4694e5245e778022eaade5
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 8KB
                                • SHA256 db1cf39e9c0918572eb675c0e1b9e2fb47653de96db4ca47beab2bed116949f0
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                • Size 8KB
                                • SHA256 8f5d36ddc735bcecceca469222c8ec182108cc99956cbdc5c5a64316a3993bb1
                                • MD5 SHA1 SHA512 SSDEEP

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                • Size 181KB
                                • SHA256 1e8d5c56994f76f093746c306cdc51d3efed73e120ceace5b1f4981cedc3ab21
                                • MD5 SHA1 SHA512 SSDEEP

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                • Size 181KB
                                • SHA256 46b340985c13c624f3719390cd37ed56d02a8f6b232471fa5ec708a856dc6f4c
                                • MD5 SHA1 SHA512 SSDEEP