Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    13-07-2022 14:49

General

  • Target

    df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe

  • Size

    623KB

  • MD5

    c24a08bfeb09c9842b8e6578d7b0b721

  • SHA1

    937a77b8ad27217b346922cb5513458542e3d390

  • SHA256

    df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567

  • SHA512

    42717c37604b41fff2bae91a22037f0e2b1d3514a8305d672595930f331a6a998d1a88741585413977ee81cd59ab155faf19ae654d229dc0256e30d71b222799

Malware Config

Signatures

  • Locky

    Ransomware strain released in 2016, with advanced features like anti-analysis.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Sets desktop wallpaper using registry 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 Control Panel 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe
    "C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Sets desktop wallpaper using registry
    • Modifies Control Panel
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\asasin.htm
      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:628
      • 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=0x108,0x10c,0x110,0xe4,0x114,0x7ff87a4446f8,0x7ff87a444708,0x7ff87a444718
        3⤵
          PID:5000
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2172,6757219008230053318,7012215600062379034,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2180 /prefetch:2
          3⤵
            PID:4748
          • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2232 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1612
          • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2744 /prefetch:8
            3⤵
              PID:1724
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,6757219008230053318,7012215600062379034,131072 --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=3492 /prefetch:1
              3⤵
                PID:4600
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,6757219008230053318,7012215600062379034,131072 --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=3500 /prefetch:1
                3⤵
                  PID:4656
                • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5324 /prefetch:8
                  3⤵
                    PID:1556
                  • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5404 /prefetch:8
                    3⤵
                      PID:1792
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,6757219008230053318,7012215600062379034,131072 --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=5344 /prefetch:1
                      3⤵
                        PID:876
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2172,6757219008230053318,7012215600062379034,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5676 /prefetch:1
                        3⤵
                          PID:1404
                        • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5492 /prefetch:8
                          3⤵
                            PID:4280
                          • 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:4188
                            • 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,0x7ff6848a5460,0x7ff6848a5470,0x7ff6848a5480
                              4⤵
                                PID:4792
                            • 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=2172,6757219008230053318,7012215600062379034,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5492 /prefetch:8
                              3⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1764
                          • C:\Windows\SysWOW64\cmd.exe
                            cmd.exe /C del /Q /F "C:\Users\Admin\AppData\Local\Temp\df255af635a2dde04c031db95862f11e1bf44fe5cfc10d3b20bd4678ed818567.exe"
                            2⤵
                              PID:4456
                          • C:\Windows\System32\CompPkgSrv.exe
                            C:\Windows\System32\CompPkgSrv.exe -Embedding
                            1⤵
                              PID:2492

                            Network

                            MITRE ATT&CK Enterprise v6

                            Replay Monitor

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                            Downloads

                            • C:\Users\Admin\Desktop\asasin.htm

                              Filesize

                              8KB

                              MD5

                              0065ee5c34b40e4fc2c91f8ca9388d46

                              SHA1

                              9522d1c1e91c8808698a8e3018e3233c47494042

                              SHA256

                              f4c35e9b0aa9573e1d23595da435306aff64fada6f9b96068e80f7a25a2b2ecd

                              SHA512

                              76ad0e473675064df9ed2e5b9b6858abe8ec7617a5110794a63e07a163330deaa8eccbb56833b94ddf01ae87d04a077e5e60a57f79f0c3075c58e2c9fb12d128

                            • \??\pipe\LOCAL\crashpad_628_RPGRBHPAGFYPNCFI

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                            • memory/628-135-0x0000000000000000-mapping.dmp

                            • memory/876-155-0x0000000000000000-mapping.dmp

                            • memory/1404-157-0x0000000000000000-mapping.dmp

                            • memory/1556-151-0x0000000000000000-mapping.dmp

                            • memory/1612-141-0x0000000000000000-mapping.dmp

                            • memory/1724-143-0x0000000000000000-mapping.dmp

                            • memory/1764-160-0x0000000000000000-mapping.dmp

                            • memory/1792-153-0x0000000000000000-mapping.dmp

                            • memory/3456-133-0x0000000000400000-0x00000000004A2C94-memory.dmp

                              Filesize

                              651KB

                            • memory/3456-137-0x0000000000400000-0x00000000004A2C94-memory.dmp

                              Filesize

                              651KB

                            • memory/3456-134-0x0000000000400000-0x00000000004A2C94-memory.dmp

                              Filesize

                              651KB

                            • memory/3456-131-0x0000000000400000-0x00000000004A2C94-memory.dmp

                              Filesize

                              651KB

                            • memory/3456-130-0x0000000000400000-0x0000000000489000-memory.dmp

                              Filesize

                              548KB

                            • memory/4188-158-0x0000000000000000-mapping.dmp

                            • memory/4456-136-0x0000000000000000-mapping.dmp

                            • memory/4600-146-0x0000000000000000-mapping.dmp

                            • memory/4656-148-0x0000000000000000-mapping.dmp

                            • memory/4748-140-0x0000000000000000-mapping.dmp

                            • memory/4792-159-0x0000000000000000-mapping.dmp

                            • memory/5000-138-0x0000000000000000-mapping.dmp