Resubmissions

07/11/2022, 17:21

221107-vw3tyabhdk8

07/11/2022, 15:45

221107-s66bpsedd58

07/11/2022, 15:41

221107-s48ztaecf58

Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2022, 15:45

General

  • Target
    https://www.dropbox.com/l/scl/AAAEjhloAy7zP-0fnSl_zWrt7ojWo_k9vQs
  • Sample221107-s66bpsedd5
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Program Files directory 7 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" https://www.dropbox.com/l/scl/AAAEjhloAy7zP-0fnSl_zWrt7ojWo_k9vQs
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4948
    • 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=89.0.4389.114 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7fffea094f50,0x7fffea094f60,0x7fffea094f70
      2⤵
        PID:4796
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1608 /prefetch:2
        2⤵
          PID:1296
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=2016 /prefetch:8
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:792
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2276 /prefetch:8
          2⤵
            PID:2948
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2944 /prefetch:1
            2⤵
              PID:3832
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2956 /prefetch:1
              2⤵
                PID:3968
              • 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 --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4236 /prefetch:8
                2⤵
                  PID:4216
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4704 /prefetch:1
                  2⤵
                    PID:4048
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4896 /prefetch:1
                    2⤵
                      PID:4316
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5708 /prefetch:8
                      2⤵
                        PID:3352
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5784 /prefetch:8
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:668
                      • 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 --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5764 /prefetch:8
                        2⤵
                          PID:3804
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5776 /prefetch:8
                          2⤵
                            PID:3348
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3644 /prefetch:8
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:2000
                          • 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 --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4648 /prefetch:8
                            2⤵
                              PID:4480
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --disable-gpu-compositing --lang=en-US --extension-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5300 /prefetch:1
                              2⤵
                                PID:1980
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5744 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1712
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4524 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1364
                              • 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 --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5068 /prefetch:8
                                2⤵
                                  PID:3764
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2160 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:3336
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2160 /prefetch:8
                                  2⤵
                                    PID:1924
                                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2588 /prefetch:8
                                    2⤵
                                      PID:4356
                                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3712 /prefetch:8
                                      2⤵
                                        PID:1084
                                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5872 /prefetch:8
                                        2⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:2108
                                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=SAAAAAAAAADoAAAwAAAAAAAAAAAAAAAAAABgAAAQAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=6000 /prefetch:2
                                        2⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:1944
                                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=1632,11179715614700622687,1668120112480850761,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4396 /prefetch:8
                                        2⤵
                                          PID:3128
                                      • C:\Windows\System32\CompPkgSrv.exe
                                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                                        1⤵
                                          PID:260
                                        • C:\Program Files\Google\Chrome\Application\89.0.4389.114\elevation_service.exe
                                          "C:\Program Files\Google\Chrome\Application\89.0.4389.114\elevation_service.exe"
                                          1⤵
                                          • Drops file in Program Files directory
                                          PID:2164
                                          • C:\Program Files\Google\Chrome\ChromeRecovery\scoped_dir2164_1525836418\ChromeRecovery.exe
                                            "C:\Program Files\Google\Chrome\ChromeRecovery\scoped_dir2164_1525836418\ChromeRecovery.exe" --appguid={8A69D345-D564-463c-AFF1-A69D9E530F96} --browser-version=89.0.4389.114 --sessionid={84ede1c3-e41d-48ec-b400-9d1dddb695bd} --system
                                            2⤵
                                            • Executes dropped EXE
                                            PID:3012

                                        Network

                                              MITRE ATT&CK Enterprise v6

                                              Replay Monitor

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                                              Downloads

                                              ChromeRecovery.exe

                                              • Path C:\Program Files\Google\Chrome\ChromeRecovery\scoped_dir2164_1525836418\ChromeRecovery.exe
                                              • Size 253KB
                                              • SHA256 82aa3fd6a25cda9e16689cfadea175091be010cecae537e517f392e0bef5ba0f
                                              • MD5 SHA1 SHA512 SSDEEP

                                              Recovery.crx3

                                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\RecoveryImproved\1.3.36.141\Recovery.crx3
                                              • Size 141KB
                                              • SHA256 7c3a6a7d16ac44c3200f572a764bce7d8fa84b9572dd028b15c59bdccbc0a77d
                                              • MD5 SHA1 SHA512 SSDEEP