Resubmissions

28-05-2022 04:44

220528-fc3bqshcf7 8

28-05-2022 04:40

220528-fat8cadchk 3

28-05-2022 04:28

220528-e328zsdagk 8

Analysis

  • max time kernel
    147s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28-05-2022 04:44

General

  • Target

    ?????.exe

  • Size

    1.1MB

  • MD5

    50d655c1028aea459d40bf26039d17fd

  • SHA1

    eb836fc9323c52f809c8eab1b2bf925f8ecb32c7

  • SHA256

    4ced3461bf68cffbc35c50d02496235721236ad52305e874d852c7f9f00ab249

  • SHA512

    509ac8e9307a489783f396160c6343dc2a1b3306bb5e4ab8dda4580a6c411eba5160974aebe4d6aca40cf21ab1bf4b8e7f0f1056bc82e61e0a0c146883b66a81

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 35 IoCs
  • Modifies registry class 64 IoCs
  • Runs regedit.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 11 IoCs
  • Suspicious use of SendNotifyMessage 8 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\_____.exe
    "C:\Users\Admin\AppData\Local\Temp\_____.exe"
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5036
    • C:\Windows\regedit.exe
      regedit /s C:\Users\Admin\AppData\Local\Temp\e56b0c8.tmp
      2⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Runs regedit.exe
      PID:5040
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument microsoft-edge:?launchContext1=Microsoft.Windows.Cortana_cw5n1h2txyewy&url=https%3A%2F%2Fgo.microsoft.com%2Ffwlink%2F%3Flinkid%3D2181242%26ciaid%3Dactpermedge%26source%3DwindowsSearch
    1⤵
    • Adds Run key to start application
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1144
    • 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=0xf8,0xfc,0x100,0xd4,0x104,0x7ffeaaeb46f8,0x7ffeaaeb4708,0x7ffeaaeb4718
      2⤵
        PID:3748
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2148 /prefetch:2
        2⤵
          PID:5008
        • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2200 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3248
        • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2700 /prefetch:8
          2⤵
            PID:5012
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --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=3956 /prefetch:1
            2⤵
              PID:4648
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --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=3836 /prefetch:1
              2⤵
                PID:3768
              • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5304 /prefetch:8
                2⤵
                  PID:4832
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5652 /prefetch:1
                  2⤵
                    PID:5600
                  • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5896 /prefetch:8
                    2⤵
                      PID:5684
                    • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=6204 /prefetch:8
                      2⤵
                        PID:5760
                      • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6512 /prefetch:8
                        2⤵
                          PID:5824
                        • 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
                          2⤵
                          • Drops file in Program Files directory
                          PID:5868
                          • 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=0x224,0x228,0x22c,0x200,0x230,0x7ff7466d5460,0x7ff7466d5470,0x7ff7466d5480
                            3⤵
                              PID:5916
                          • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6512 /prefetch:8
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:6124
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5588 /prefetch:1
                            2⤵
                              PID:6140
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5604 /prefetch:1
                              2⤵
                                PID:4152
                              • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5916 /prefetch:8
                                2⤵
                                  PID:2156
                                • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5488 /prefetch:8
                                  2⤵
                                    PID:5556
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2136,15921448410715334358,5031310787606700934,131072 --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=3392 /prefetch:2
                                    2⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:5416
                                  • 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=2136,15921448410715334358,5031310787606700934,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3452 /prefetch:8
                                    2⤵
                                      PID:3416
                                  • C:\Windows\System32\CompPkgSrv.exe
                                    C:\Windows\System32\CompPkgSrv.exe -Embedding
                                    1⤵
                                      PID:1392

                                    Network

                                    MITRE ATT&CK Enterprise v6

                                    Replay Monitor

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                                    Downloads

                                    • C:\Users\Admin\AppData\Local\Temp\e56b0c8.tmp

                                      Filesize

                                      65KB

                                      MD5

                                      f0ab67d70ad45facdcd5077f4201971d

                                      SHA1

                                      b662ed906a5e30920f05d40d38eaf4029af4fb2c

                                      SHA256

                                      3da75830db228205a6aa910fe98d58097ddef0dc46080ae82e5785e370fadc03

                                      SHA512

                                      2cac64471d5ef929c52018fb0e90993986f03bc4d66b0f2112d179141015c2cddee4fdd7af3a06e2f4aec6a7b4595a2880e8d0897b52b2d138bb503c8d387b44

                                    • \??\pipe\LOCAL\crashpad_1144_QAQGGQHLGAGMQMFV

                                      MD5

                                      d41d8cd98f00b204e9800998ecf8427e

                                      SHA1

                                      da39a3ee5e6b4b0d3255bfef95601890afd80709

                                      SHA256

                                      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                      SHA512

                                      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                    • memory/2156-159-0x0000000000000000-mapping.dmp

                                    • memory/3248-135-0x0000000000000000-mapping.dmp

                                    • memory/3416-164-0x0000000000000000-mapping.dmp

                                    • memory/3748-132-0x0000000000000000-mapping.dmp

                                    • memory/3768-142-0x0000000000000000-mapping.dmp

                                    • memory/4152-157-0x0000000000000000-mapping.dmp

                                    • memory/4648-140-0x0000000000000000-mapping.dmp

                                    • memory/4832-144-0x0000000000000000-mapping.dmp

                                    • memory/5008-134-0x0000000000000000-mapping.dmp

                                    • memory/5012-137-0x0000000000000000-mapping.dmp

                                    • memory/5040-130-0x0000000000000000-mapping.dmp

                                    • memory/5416-162-0x0000000000000000-mapping.dmp

                                    • memory/5556-161-0x0000000000000000-mapping.dmp

                                    • memory/5600-146-0x0000000000000000-mapping.dmp

                                    • memory/5684-148-0x0000000000000000-mapping.dmp

                                    • memory/5760-150-0x0000000000000000-mapping.dmp

                                    • memory/5868-151-0x0000000000000000-mapping.dmp

                                    • memory/5916-152-0x0000000000000000-mapping.dmp

                                    • memory/6124-153-0x0000000000000000-mapping.dmp

                                    • memory/6140-155-0x0000000000000000-mapping.dmp