Analysis

  • max time kernel
    153s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-11-2022 23:25

General

  • Target

    25b78515feb91d63f06604d098df3b099c6a3a20c470549730f662b8025de7cc.exe

  • Size

    574KB

  • MD5

    6eff221e20283b648d9d137689afa654

  • SHA1

    cdcf71e283efa9252a3ed4d72f204412ae6f36d6

  • SHA256

    25b78515feb91d63f06604d098df3b099c6a3a20c470549730f662b8025de7cc

  • SHA512

    e6f87081330b729cbcaf2ea3801749b5dec83ed685128b6a4215d2d0c62c7fecc7eb5144282e13bf913c9ca23088364d63d6b899a071533e6f0fde7f4f3b91c9

  • SSDEEP

    12288:hQpZZI8T70/Vkkf/CDT8olHgUpvvRfbitUtasiT8Yky0RxPe/:SEk8VkyqsgHgUpvtOhkyWde/

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 7 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\25b78515feb91d63f06604d098df3b099c6a3a20c470549730f662b8025de7cc.exe
    "C:\Users\Admin\AppData\Local\Temp\25b78515feb91d63f06604d098df3b099c6a3a20c470549730f662b8025de7cc.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4356
    • C:\Users\Admin\AppData\Local\Temp\caidaotx.exe
      C:\Users\Admin\AppData\Local\Temp/caidaotx.exe
      2⤵
      • Executes dropped EXE
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4968
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument http://www.maicaidao.com/?md5=4b4a956b9c7dc734f339fa05e4c2a990
        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:1864
        • 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,0x100,0xd4,0x104,0x7ffe54da46f8,0x7ffe54da4708,0x7ffe54da4718
          4⤵
            PID:1116
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2204 /prefetch:2
            4⤵
              PID:4524
            • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2256 /prefetch:3
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:3984
            • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2764 /prefetch:8
              4⤵
                PID:5112
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --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=3348 /prefetch:1
                4⤵
                  PID:4020
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --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=3364 /prefetch:1
                  4⤵
                    PID:1548
                  • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5044 /prefetch:8
                    4⤵
                      PID:4984
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --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=1044 /prefetch:1
                      4⤵
                        PID:1844
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3496 /prefetch:1
                        4⤵
                          PID:1800
                        • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4232 /prefetch:8
                          4⤵
                            PID:1468
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --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=6052 /prefetch:1
                            4⤵
                              PID:4484
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6108 /prefetch:1
                              4⤵
                                PID:4396
                              • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6672 /prefetch:8
                                4⤵
                                  PID:2796
                                • 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:4772
                                  • 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,0x7ff64c975460,0x7ff64c975470,0x7ff64c975480
                                    5⤵
                                      PID:4768
                                  • 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=2164,4390749329314550758,9761752665698270149,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6672 /prefetch:8
                                    4⤵
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:2804
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2164,4390749329314550758,9761752665698270149,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6440 /prefetch:1
                                    4⤵
                                      PID:3948
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:4024

                                Network

                                MITRE ATT&CK Matrix ATT&CK v6

                                Persistence

                                Registry Run Keys / Startup Folder

                                1
                                T1060

                                Defense Evasion

                                Modify Registry

                                2
                                T1112

                                Discovery

                                System Information Discovery

                                2
                                T1082

                                Query Registry

                                1
                                T1012

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • C:\Users\Admin\AppData\Local\Temp\caidaotx.exe
                                  Filesize

                                  215KB

                                  MD5

                                  4b4a956b9c7dc734f339fa05e4c2a990

                                  SHA1

                                  4a058f0fb95f497f36000eb2c7d697a1aa2c81d5

                                  SHA256

                                  a13971cb63bb5d1fa65224587579a16f47dd89b1f6b02e1ac58d0233e4179802

                                  SHA512

                                  395f234d99cad4b1890625ac6d38350a86673fede1d9c9408e5808f3ef0138a166c2bc08a5868c4f060139340fe25e6d2b51a28336608df5173d0f9473fea514

                                • C:\Users\Admin\AppData\Local\Temp\caidaotx.exe
                                  Filesize

                                  215KB

                                  MD5

                                  4b4a956b9c7dc734f339fa05e4c2a990

                                  SHA1

                                  4a058f0fb95f497f36000eb2c7d697a1aa2c81d5

                                  SHA256

                                  a13971cb63bb5d1fa65224587579a16f47dd89b1f6b02e1ac58d0233e4179802

                                  SHA512

                                  395f234d99cad4b1890625ac6d38350a86673fede1d9c9408e5808f3ef0138a166c2bc08a5868c4f060139340fe25e6d2b51a28336608df5173d0f9473fea514

                                • \??\pipe\LOCAL\crashpad_1864_IUGMFDOHPBORBFGJ
                                  MD5

                                  d41d8cd98f00b204e9800998ecf8427e

                                  SHA1

                                  da39a3ee5e6b4b0d3255bfef95601890afd80709

                                  SHA256

                                  e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                                  SHA512

                                  cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                                • memory/1116-140-0x0000000000000000-mapping.dmp
                                • memory/1468-158-0x0000000000000000-mapping.dmp
                                • memory/1548-150-0x0000000000000000-mapping.dmp
                                • memory/1800-156-0x0000000000000000-mapping.dmp
                                • memory/1844-154-0x0000000000000000-mapping.dmp
                                • memory/1864-139-0x0000000000000000-mapping.dmp
                                • memory/2804-165-0x0000000000000000-mapping.dmp
                                • memory/3948-167-0x0000000000000000-mapping.dmp
                                • memory/3984-143-0x0000000000000000-mapping.dmp
                                • memory/4020-148-0x0000000000000000-mapping.dmp
                                • memory/4356-132-0x0000000000400000-0x0000000000515200-memory.dmp
                                  Filesize

                                  1.1MB

                                • memory/4356-133-0x0000000000400000-0x0000000000515200-memory.dmp
                                  Filesize

                                  1.1MB

                                • memory/4396-162-0x0000000000000000-mapping.dmp
                                • memory/4484-160-0x0000000000000000-mapping.dmp
                                • memory/4524-142-0x0000000000000000-mapping.dmp
                                • memory/4768-164-0x0000000000000000-mapping.dmp
                                • memory/4772-163-0x0000000000000000-mapping.dmp
                                • memory/4968-138-0x0000000000400000-0x00000000004B3000-memory.dmp
                                  Filesize

                                  716KB

                                • memory/4968-137-0x0000000000400000-0x00000000004B3000-memory.dmp
                                  Filesize

                                  716KB

                                • memory/4968-134-0x0000000000000000-mapping.dmp
                                • memory/4984-152-0x0000000000000000-mapping.dmp
                                • memory/5112-146-0x0000000000000000-mapping.dmp