Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-12-2022 19:58

General

  • Target

    b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84.exe

  • Size

    12KB

  • MD5

    3a7bec068bd5ddc12b3266df7ae68d04

  • SHA1

    6f66bf634751ca44f2e1959c89b253266c1bd8f9

  • SHA256

    b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84

  • SHA512

    21ed9867ac77bebaf4d0888c2641d72babdd6101985ffd38b1928be42ba0d4e7dad39794b096be1da20fe260a3cd6e864c72ece925dc83761087bc432158564e

  • SSDEEP

    192:7RksiESTYWtTIwpuHR0MgvVc/iF/JA73fMORINPk6WvW1EDp2B/0V/9SNs/:isiESTBEwAR0MgtiwJ+PMHPk6WvW1EDt

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 7 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 start page 1 TTPs 1 IoCs
  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84.exe
    "C:\Users\Admin\AppData\Local\Temp\b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3836
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://www.18hi.net/
      2⤵
      • 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:2036
      • 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,0x100,0x104,0xf8,0x108,0x7ff8162446f8,0x7ff816244708,0x7ff816244718
        3⤵
          PID:1120
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2188 /prefetch:2
          3⤵
            PID:3464
          • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2464 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:2636
          • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2740 /prefetch:8
            3⤵
              PID:3036
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --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=3656 /prefetch:1
              3⤵
                PID:3308
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --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=3664 /prefetch:1
                3⤵
                  PID:3172
                • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5104 /prefetch:8
                  3⤵
                    PID:4264
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --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=5468 /prefetch:1
                    3⤵
                      PID:3536
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5504 /prefetch:1
                      3⤵
                        PID:384
                      • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3648 /prefetch:8
                        3⤵
                          PID:2644
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2724 /prefetch:1
                          3⤵
                            PID:1528
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2116,8513736754257434878,14577447010103482104,131072 --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=6632 /prefetch:1
                            3⤵
                              PID:5000
                            • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4404 /prefetch:8
                              3⤵
                                PID:4616
                              • 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
                                3⤵
                                • Drops file in Program Files directory
                                PID:1188
                                • 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=0x220,0x224,0x228,0x1c4,0x22c,0x7ff73ad55460,0x7ff73ad55470,0x7ff73ad55480
                                  4⤵
                                    PID:2200
                                • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4404 /prefetch:8
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:1852
                                • 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=2116,8513736754257434878,14577447010103482104,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=5036 /prefetch:8
                                  3⤵
                                    PID:4268
                                • C:\Windows\system\Run39.exe
                                  "C:\Windows\system\Run39.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Adds Run key to start application
                                  • Drops file in System32 directory
                                  • Drops file in Windows directory
                                  • Modifies Internet Explorer start page
                                  • Modifies registry class
                                  • Suspicious behavior: GetForegroundWindowSpam
                                  • Suspicious use of SetWindowsHookEx
                                  PID:1736
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:4704

                                Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

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                                Downloads

                                • C:\Windows\System\Run39.exe

                                  Filesize

                                  12KB

                                  MD5

                                  3a7bec068bd5ddc12b3266df7ae68d04

                                  SHA1

                                  6f66bf634751ca44f2e1959c89b253266c1bd8f9

                                  SHA256

                                  b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84

                                  SHA512

                                  21ed9867ac77bebaf4d0888c2641d72babdd6101985ffd38b1928be42ba0d4e7dad39794b096be1da20fe260a3cd6e864c72ece925dc83761087bc432158564e

                                • C:\Windows\system\Run39.exe

                                  Filesize

                                  12KB

                                  MD5

                                  3a7bec068bd5ddc12b3266df7ae68d04

                                  SHA1

                                  6f66bf634751ca44f2e1959c89b253266c1bd8f9

                                  SHA256

                                  b8ad3a57d61ecb4b19607bc407b89144217d572b7fcb6997bbe4a899fb2a3c84

                                  SHA512

                                  21ed9867ac77bebaf4d0888c2641d72babdd6101985ffd38b1928be42ba0d4e7dad39794b096be1da20fe260a3cd6e864c72ece925dc83761087bc432158564e

                                • memory/1736-143-0x0000000000400000-0x000000000040A000-memory.dmp

                                  Filesize

                                  40KB

                                • memory/3836-133-0x0000000000400000-0x000000000040A000-memory.dmp

                                  Filesize

                                  40KB

                                • memory/3836-141-0x0000000000400000-0x000000000040A000-memory.dmp

                                  Filesize

                                  40KB