Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    23/01/2022, 02:44

General

  • Target
    433.dll
  • Size 319KB
  • Sample220123-c8bl4seeck
  • SHA256 7f56e7ddc6427acbd8db28b4a4fc43a73d2f090ae9a306665bde3c3339e48687
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Bazar Loader

    Detected loader normally used to deploy BazarBackdoor malware.

  • Bazar/Team9 Loader payload 3 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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\433.dll,#1
    1⤵
    • Blocklisted process makes network request
    • Suspicious use of SetThreadContext
    PID:3012
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k UnistackSvcGroup
      2⤵
        PID:1204
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3564
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:908
        • C:\Windows\system32\rundll32.exe
          rundll32 433.dll,setvstate
          3⤵
            PID:1324
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\433.dll,#1 {4A370E7F-5CAC-4DDC-B7CE-3BA5E0CAE094}
        1⤵
          PID:568
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe"
          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:2348
          • 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=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffe70bb4f50,0x7ffe70bb4f60,0x7ffe70bb4f70
            2⤵
              PID:1712
            • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1864 /prefetch:8
              2⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:2936
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1500 /prefetch:2
              2⤵
                PID:4024
              • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2288 /prefetch:8
                2⤵
                  PID:4004
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2712 /prefetch:1
                  2⤵
                    PID:3280
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2572 /prefetch:1
                    2⤵
                      PID:1100
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3472 /prefetch:1
                      2⤵
                        PID:1200
                      • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4308 /prefetch:8
                        2⤵
                          PID:500
                        • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4352 /prefetch:8
                          2⤵
                            PID:1400
                          • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4468 /prefetch:8
                            2⤵
                              PID:3972
                            • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4712 /prefetch:8
                              2⤵
                                PID:788
                              • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4828 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:3176
                              • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4416 /prefetch:8
                                2⤵
                                • Suspicious behavior: EnumeratesProcesses
                                PID:3564
                              • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4724 /prefetch:8
                                2⤵
                                  PID:596
                                • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4340 /prefetch:8
                                  2⤵
                                    PID:1288
                                  • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5148 /prefetch:8
                                    2⤵
                                      PID:1076
                                    • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5104 /prefetch:8
                                      2⤵
                                        PID:1176
                                      • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4916 /prefetch:8
                                        2⤵
                                          PID:3660
                                        • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4340 /prefetch:8
                                          2⤵
                                            PID:2024
                                          • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4940 /prefetch:8
                                            2⤵
                                              PID:500
                                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --disable-gpu-compositing --lang=en-US --extension-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=21 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4728 /prefetch:1
                                              2⤵
                                                PID:600
                                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1488,6154686423634823003,17533804794110070184,131072 --disable-gpu-compositing --lang=en-US --extension-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=22 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5072 /prefetch:1
                                                2⤵
                                                  PID:3780
                                                • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4664 /prefetch:8
                                                  2⤵
                                                  • Suspicious behavior: EnumeratesProcesses
                                                  PID:1380
                                                • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2140 /prefetch:8
                                                  2⤵
                                                  • Suspicious behavior: EnumeratesProcesses
                                                  PID:2024
                                                • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3664 /prefetch:8
                                                  2⤵
                                                    PID:3512
                                                  • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1568 /prefetch:8
                                                    2⤵
                                                    • Suspicious behavior: EnumeratesProcesses
                                                    PID:1208
                                                  • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1456 /prefetch:8
                                                    2⤵
                                                      PID:992
                                                    • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2536 /prefetch:8
                                                      2⤵
                                                        PID:2756
                                                      • 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=1488,6154686423634823003,17533804794110070184,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3648 /prefetch:8
                                                        2⤵
                                                          PID:644

                                                      Network

                                                            MITRE ATT&CK Enterprise v6

                                                            Replay Monitor

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                                                            Downloads

                                                            memory/568-173-0x000002EBFE110000-0x000002EBFE2DE000-memory.dmp

                                                            memory/1204-176-0x00007FF7D7160000-0x00007FF7D71D3000-memory.dmp

                                                            memory/1204-177-0x00007FF7D7160000-0x00007FF7D71D3000-memory.dmp

                                                            memory/1324-174-0x000001653AE90000-0x000001653B05E000-memory.dmp

                                                            memory/3012-115-0x00000189DC540000-0x00000189DC70E000-memory.dmp

                                                            memory/3564-121-0x000001CD54740000-0x000001CD54762000-memory.dmp

                                                            memory/3564-142-0x000001CD548B0000-0x000001CD548EC000-memory.dmp

                                                            memory/3564-153-0x000001CD526C0000-0x000001CD526C2000-memory.dmp

                                                            memory/3564-154-0x000001CD526C3000-0x000001CD526C5000-memory.dmp

                                                            memory/3564-155-0x000001CD54E00000-0x000001CD54E76000-memory.dmp