Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20/05/2022, 10:18

General

  • Target

    moavjcbg.dll

  • Size

    87KB

  • MD5

    fee171fbd4ec2ef64bd04567a80df805

  • SHA1

    2db3c49ec6151c1a3c98a7b92006629741b403b5

  • SHA256

    9146be1fc85a94880644670cbf63545efb6db43516d79f42a8792342f684a5ca

  • SHA512

    c66a675706a5c06202366ad6ef2a64bb82d033037447bd212ef479694d26ce040874a65a48f6f9af04af87a5bf1c45696fc2806e5095dac91d3d3b189401712c

Malware Config

Signatures

  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\moavjcbg.dll,#1
    1⤵
    • Modifies extensions of user files
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\system32\cmd.exe
      cmd /c "start microsoft-edge:http://a6e4d038f0xtceymt.rowarea.info/xtceymt^&1^&38844568^&79^&403^&2219041
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument microsoft-edge:http://a6e4d038f0xtceymt.rowarea.info/xtceymt&1&38844568&79&403&2219041
        3⤵
        • Adds Run key to start application
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:4828
        • 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=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff8d6d446f8,0x7ff8d6d44708,0x7ff8d6d44718
          4⤵
            PID:5068
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2164 /prefetch:2
            4⤵
              PID:3100
            • 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=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2456 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:5112
            • 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=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2692 /prefetch:8
              4⤵
                PID:1008
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3312 /prefetch:1
                4⤵
                  PID:3132
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3328 /prefetch:1
                  4⤵
                    PID:3512
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4884 /prefetch:1
                    4⤵
                      PID:3632
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5052 /prefetch:8
                      4⤵
                        PID:3664
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5112 /prefetch:8
                        4⤵
                          PID:3444
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5676 /prefetch:1
                          4⤵
                            PID:4168
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5648 /prefetch:1
                            4⤵
                              PID:2028
                            • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5944 /prefetch:8
                              4⤵
                                PID:3388
                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
                                4⤵
                                • Drops file in Program Files directory
                                PID:1688
                                • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x7ff70c285460,0x7ff70c285470,0x7ff70c285480
                                  5⤵
                                    PID:5020
                                • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5944 /prefetch:8
                                  4⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:2112
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3420 /prefetch:8
                                  4⤵
                                    PID:2608
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3812 /prefetch:8
                                    4⤵
                                      PID:1456
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3328 /prefetch:8
                                      4⤵
                                        PID:4260
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1904 /prefetch:8
                                        4⤵
                                          PID:3360
                                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=4884 /prefetch:8
                                          4⤵
                                            PID:4396
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --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=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=6452 /prefetch:2
                                            4⤵
                                            • Suspicious behavior: EnumeratesProcesses
                                            PID:4280
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --field-trial-handle=2140,17841834508265077954,10864939263870387170,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=6452 /prefetch:8
                                            4⤵
                                              PID:928
                                        • C:\Windows\system32\WerFault.exe
                                          C:\Windows\system32\WerFault.exe -u -p 1284 -s 1084
                                          2⤵
                                          • Program crash
                                          PID:5088
                                      • C:\Windows\system32\WerFault.exe
                                        C:\Windows\system32\WerFault.exe -pss -s 452 -p 1284 -ip 1284
                                        1⤵
                                          PID:5084
                                        • C:\Windows\System32\CompPkgSrv.exe
                                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                                          1⤵
                                            PID:5096
                                          • C:\Windows\system32\svchost.exe
                                            C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
                                            1⤵
                                              PID:3124

                                            Network

                                            MITRE ATT&CK Enterprise v6

                                            Replay Monitor

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                                            Downloads

                                            • memory/1284-130-0x000002875B8E0000-0x000002875B8EB000-memory.dmp

                                              Filesize

                                              44KB