Beste mensen, sinds enige tijd word ik geplaagd door een pop-upje, dat op mijn scherm verschijnt. Het meldt mij dat ik een virus heb, als ik daarop klik wordt ik gevoerd naar een website die mij voorschotelt dat ik iets met macfee moet doen. het is van de site "ismilinstite.com" geen idee hoe dat bij mij op de iMac komt.

Ik wordt beschermd door "KPN veilig" en door Sophos, verder CleanmyMac de realtime malware monitor aan staan.
Wat te doen?

ik kan op internet er verder weinig over vinden. vandaar mijn vraag hier gesteld.
Met vriendelijke groet,

Peter

bijlage wat screenshots

Nooit op ingaan op die meldingen, ook niet gaan scannen, want dan wordt het probleem alleen maar erger.

Installeer de gratis versie van MalwareBytes en doe een scan en kijk wat die zegt. Je systeem is in ieder geval niet meer schoon. Je had er niet op moeten klikken !

En verder werken al die beschermingen dus niet zo goed...

Dank voor je reactie. ik kon niet anders dan er op te klikken, die pop up bleef maar komen. kreeg het niet weg ook niet na opnieuw opstarten.
Zal Malwarebytes downloaden en scannen.

Even de afbeeldingen in de tekst gezet, zodat niet iedereen ze hoeft te downloaden.
Nogal irritant, namelijk, dat ik deze info als downloads binnen krijg.

Dank Flix, ik wist niet hoe dat moest.
Verder Malwarebytes geïnstalleerd en gescand, niets gevonden

Dank Flix, ik wist niet hoe dat moest.

Je moet de gekozen bestanden in het bericht zetten dmv klikken op de tekst onder het gekozen bestand:
'Deze afbeelding binnen je bericht? Klik op deze tekst!'.

ah, oké zal er de volgende keer opletten, thx nogmaals.
maar hopelijk weet iemand ook mijn probleem op te lossen. diverse scans al gedaan en geen malware gevonden.

Download EtreCheck, maak een scan van je systeem en zet het resultaat hier neer. Dan kijken we met je mee.


EtreCheck vindt ook malware, en kan het (in voorkomende gevallen) ook voor je verwijderen.


https://etrecheck.com/

Hoi Puk, dat heb ik gedaan
Het is een hele boel, ik kan het als pdf hier plaatsen is dat de bedoeling, ik krijg alleen maar tekst
Of heb je hier ook voldoende aan?

ik heb een volledig rapport kunnen vinden,
zal het hierbij plaatsen

Dank alvast voor het meedenken en kijken ernaar.

Hier de complete tekst:

EtreCheckPro version: 6.1.9 (6B057)
Report generated: 2022-12-21 21:25:42
Download EtreCheckPro from https://etrecheck.com
Runtime: 3:59
Performance: Good

Problem: Computer is too slow

Major Issues:
  Anything that appears on this list needs immediate attention.
  Unsigned files - There are unsigned software files installed that could be malicious and should be reviewed.

Minor Issues:
  These issues do not need immediate attention but they may indicate future problems or opportunities for improvement.
  More than one antivirus app - This computer has multiple antivirus apps installed.
  No Time Machine backup - Time Machine backup not found.
  Clean up - There are orphan files that could be removed.
  Unsigned files - There are unsigned software files installed. These files could be old, incompatible, and cause problems. They should be reviewed.
  System modifications - There are a large number of system modifications running in the background.
  Limited permissions - More information may be available with Full Disk Access.
  Kernel extensions present - This computer has kernel extensions that may not work in the future.

Hardware Information:
  iMac (Retina 5K, 27-inch, 2017)
    Status: Supported
  iMac Model: iMac18,3
  3,4 GHz Quad-Core Intel Core i5 (i5-7500) CPU: 4-core
  24 GB RAM - Upgradeable
    BANK 0/DIMM0 - 4 GB DDR4 SO-DIMM 2400 
    BANK 0/DIMM1 - 8 GB DDR4 SO-DIMM 2400 
    BANK 1/DIMM0 - 4 GB DDR4 SO-DIMM 2400 
    BANK 1/DIMM1 - 8 GB DDR4 SO-DIMM 2400 

Video Information:
  Radeon Pro 570 - VRAM: 4 GB
    iMac (built-in) 5120 x 2880

Drives:
  disk0 - APPLE SSD SM0512L 500.28 GB (Solid State - TRIM: Yes)
  Internal PCI-Express 8.0 GT/s x4 NVM Express
    disk0s1 - EFI [EFI] 315 MB
    disk0s2 [APFS Container] 499.96 GB
      disk1 [APFS Virtual drive] 499.96 GB (Shared by 7 volumes)
        disk1s1 - Macintosh HD (APFS) [Fusion Drive] (15.41 GB used)
          disk1s1s1 - Macintosh HD (APFS) (15.41 GB used)
        disk1s1s1 - Macintosh HD (APFS) (15.41 GB used)
        disk1s2 - Preboot (APFS) [APFS Preboot] (496 MB used)
        disk1s3 - Recovery (APFS) [Recovery] (1.63 GB used)
        disk1s4 - VM (APFS) [APFS VM] (3.22 GB used)
        disk1s5 - M*********************s (APFS) [APFS Virtual drive] (279.72 GB used)
        disk1s6 - U****e (APFS) (6 MB used)

  disk2 - TOSHIBA External USB 3.0 1.00 TB
  External USB 5 Gbit/s USB
    disk2s1 - T*********T (Journaled HFS+) 1.00 TB (316.54 GB used)

Mounted Volumes:
  disk1s1s1 - Macintosh HD
    Filesystem: APFS
    Mount point: /
    Fusion drive
    Read-only: Yes
    Used: 15.41 GB
    Shared values
      Size: 499.96 GB
      Free: 199.31 GB
      Available: 200.80 GB

  disk1s2 - Preboot [APFS Preboot]
    Filesystem: APFS
    Mount point: /System/Volumes/Preboot
    Used: 496 MB
    Shared values
      Size: 499.96 GB
      Free: 199.31 GB

  disk1s4 - VM [APFS VM]
    Filesystem: APFS
    Mount point: /System/Volumes/VM
    Used: 3.22 GB
    Shared values
      Size: 499.96 GB
      Free: 199.31 GB

  disk1s5 - M*********************s [APFS Virtual drive]
    Filesystem: APFS
    Mount point: /System/Volumes/Data
    Used: 279.72 GB
    Shared values
      Size: 499.96 GB
      Free: 199.31 GB
      Available: 200.80 GB

  disk1s6 - U****e
    Filesystem: APFS
    Mount point: /System/Volumes/U****e
    Used: 6 MB
    Shared values
      Size: 499.96 GB
      Free: 199.31 GB

  disk2s1 - T*********T
    Filesystem: Journaled HFS+
    Mount point: /Volumes/T*********T
    Used: 316.54 GB
    Size: 1.00 TB
    Free: 683.63 GB

Network:
  Interface en0: Ethernet
  Interface en1: Wi-Fi
    802.11 a/b/g/n/ac
  Interface bridge0: Thunderbolt Bridge

System Software:
  10.17.6 10.17.6 (21G115)
  Time since boot: About 12 hours

Notifications:
  F-Secure Mac Protection.app
    one notification

  Safari.app
    44 notifications

  CleanMyMac X.app
    one notification (one scheduled)

  Path Finder.app
    14 notifications

Security:
  Gatekeeper: App Store and identified developers
  System Integrity Protection: Enabled

  Antivirus software: Apple, F-Secure, and Sophos

Unsigned Files:
  Launchd: /Library/LaunchDaemons/com.microsoft.office.licensing.helper.plist
    Executable: /Library/PrivilegedHelperTools/com.microsoft.office.licensing.helper
    Details: Exact match found in the legitimate list - probably OK

  Launchd: /Library/LaunchAgents/com.dymo.dls.webservice.plist
    Executable: /Library/Frameworks/DYMO/SDK/DYMO.DLS.Printing.Host.app/Contents/MacOS/DYMO.DLS.Printing.Host
    Details: Exact match found in the legitimate list - probably OK

  Launchd: /Library/LaunchDaemons/com.microsoft.OneDriveStandaloneUpdaterDaemon.plist
    Executable: /Applications/OneDrive.app/Contents/StandaloneUpdaterDaemon.xpc/Contents/MacOS/StandaloneUpdaterDaemon

  Launchd: /Library/LaunchDaemons/com.microsoft.OneDriveUpdaterDaemon.plist
    Executable: /Applications/OneDrive.app/Contents/OneDriveUpdaterDaemon.xpc/Contents/MacOS/OneDriveUpdaterDaemon
    Details: Exact match found in the legitimate list - probably OK

Kernel Extensions:
  /Library/Extensions
    [Not Loaded] DymoUsbPrinterClassDriver.kext - com.dymo.usbprinterclassdriver.kext (1.1 - SDK 10.12)

System Launch Daemons:
  [Not Loaded]  35 Apple tasks
  [Loaded]  190 Apple tasks
  [Running]  153 Apple tasks
  [Other]  One Apple task

System Launch Agents:
  [Not Loaded]  14 Apple tasks
  [Loaded]  172 Apple tasks
  [Running]  167 Apple tasks
  [Other]  One Apple task

Launch Daemons:
  [Loaded] com.BlueStacks.AppPlayer.bstservice_helper.plist ( - installed 2020-06-27)
    Executable: /Library/PrivilegedHelperTools/com.BlueStacks.AppPlayer.bstservice_helper

  [Loaded] com.adobe.ARMDC.Communicator.plist ( - installed 2021-11-11)
    Executable: /Library/PrivilegedHelperTools/com.adobe.ARMDC.Communicator

  [Loaded] com.adobe.ARMDC.SMJobBlessHelper.plist ( - installed 2021-11-11)
    Executable: /Library/PrivilegedHelperTools/com.adobe.ARMDC.SMJobBlessHelper

  [Loaded] com.adobe.acc.installer.v2.plist ( - installed 2022-09-30)
    Executable: /Library/PrivilegedHelperTools/com.adobe.acc.installer.v2

  [Loaded] com.adobe.agsservice.plist ( - installed 2022-10-10)
    Executable: /Library/Application Support/Adobe/AdobeGCClient/AGSService

  [Loaded] com.cocoatech.PathFinder.SMFHelper7.plist ( - installed 2022-11-22)
    Executable: /Library/PrivilegedHelperTools/com.cocoatech.PathFinder.SMFHelper7

  [Not Loaded] com.dymo.pnpd.plist ( - installed 2019-02-02)
    Executable: /Library/Printers/DYMO/Utilities/pnpd

  [Other] com.edb.launchd.postgresql-12.plist ( - installed 2020-01-28)
    Executable: /Library/PostgreSQL/12/bin/postmaster

  [Loaded] com.f-secure.fsavd.dbhelperdaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/dbhelperwrapper

  [Running] com.f-secure.fsavdaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/fsavdwrapper

  [Running] com.f-secure.fscesproviderdaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/fscesproviderdwrapper

  [Loaded] com.f-secure.fschotfixdaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fschotfix.app/Contents/MacOS/fschotfix

  [Running] com.f-secure.fscreputationdaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fscsandboxexecwrapper

  [Running] com.f-secure.fscsafeadmindaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fscsandboxexecwrapper

  [Running] com.f-secure.fscsafesettingsdaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fscsandboxexecwrapper

  [Running] com.f-secure.fsctelemetrydaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fscsandboxexecwrapper

  [Loaded] com.f-secure.fscupdatedaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/updatedaemon/bin/fscupdated.xpc/Contents/MacOS/fscupdated

  [Loaded] com.f-secure.fscupdatedownloaddaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/updatedaemon/bin/fscupdatedownloadd.xpc/Contents/MacOS/fscupdatedownloadd

  [Running] com.f-secure.fscxfencedaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/fscxfencedwrapper

  [Loaded] com.f-secure.fsmac.licensetooldaemon.plist ( - installed 2022-11-28)
    Executable: /Library/F-Secure/bin/fsclicensetoolwrapper

  [Running] com.f-secure.ultralight.fscsmdaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/fsculservicewrapper

  [Running] com.f-secure.ultralight.fsculcoredaemon.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/XPCServices/fsculservicewrapper

  [Loaded] com.microsoft.OneDriveStandaloneUpdaterDaemon.plist ( - installed 2020-12-02)
    Executable: /Applications/OneDrive.app/Contents/StandaloneUpdaterDaemon.xpc/Contents/MacOS/StandaloneUpdaterDaemon

  [Loaded] com.microsoft.OneDriveUpdaterDaemon.plist ( - installed 2020-12-02)
    Executable: /Applications/OneDrive.app/Contents/OneDriveUpdaterDaemon.xpc/Contents/MacOS/OneDriveUpdaterDaemon

  [Loaded] com.microsoft.autoupdate.helper.plist ( - installed 2022-10-11)
    Executable: /Library/PrivilegedHelperTools/com.microsoft.autoupdate.helper

  [Loaded] com.microsoft.office.licensing.helper.plist ( - installed 2010-09-28)
    Executable: /Library/PrivilegedHelperTools/com.microsoft.office.licensing.helper

  [Loaded] com.microsoft.office.licensingV2.helper.plist ( - installed 2022-05-26)
    Executable: /Library/PrivilegedHelperTools/com.microsoft.office.licensingV2.helper

  [Not Loaded] com.microsoft.teams.TeamsUpdaterDaemon.plist ( - installed 2021-02-20)
    Executable: /Applications/Microsoft Teams.app/Contents/TeamsUpdaterDaemon.xpc/Contents/MacOS/TeamsUpdaterDaemon

  [Running] com.rogueamoeba.aceagent.plist ( - installed 2022-07-19)
    Executable: /Library/Audio/Plug-Ins/HAL/ACE.driver/Contents/Resources/aceagent.app/Contents/MacOS/aceagent

  [Loaded] com.rogueamoeba.acetool.plist ( - installed 2022-07-19)
    Executable: /Library/Audio/Plug-Ins/HAL/ACE.driver/Contents/Resources/acetool

  [Running] com.sophos.common.servicemanager.plist ( - installed 2022-12-05)
    Executable: /Library/Sophos Anti-Virus/SophosServiceManager.app/Contents/MacOS/SophosServiceManager

  [Not Loaded] com.sophos.sophoscbr.plist ( - installed 2022-08-24)
    Executable: /Library/SophosCBR/SophosCBR.bundle/Contents/MacOS/SophosCBR

  [Loaded] us.zoom.ZoomDaemon.plist ( - installed 2022-11-17)
    Executable: /Library/PrivilegedHelperTools/us.zoom.ZoomDaemon

Launch Agents:
  [Not Loaded] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a23d420d.plist ( - installed 2022-01-07)
    Executable: /Library/Application Support/Adobe/ARMDC/Application/Acrobat Update Helper.app/Contents/MacOS/Acrobat Update Helper

  [Not Loaded] com.adobe.AdobeCreativeCloud.plist ( - installed 2022-09-30)
    Executable: /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/Creative Cloud

  [Running] com.adobe.GC.AGM.plist ( - installed 2022-10-10)
    Executable: /Library/Application Support/Adobe/AdobeGCClient/AGMService

  [Not Loaded] com.adobe.GC.Invoker-1.0.plist ( - installed 2022-10-10)
    Executable: /Library/Application Support/Adobe/AdobeGCClient/agcinvokerutility

  [Not Loaded] com.adobe.ccxprocess.plist ( - installed 2022-08-24)
    Executable: /usr/bin/open

  [Not Loaded] com.corel.CorelUpdateHelperTask.agent.plist ( - installed 2021-12-03)
    Executable: /Library/Preferences/com.corel.CUH/CUH.app/Contents/MacOS/CUH

  [Running] com.dymo.dls.webservice.plist ( - installed 2019-02-02)
    Executable: /Library/Frameworks/DYMO/SDK/DYMO.DLS.Printing.Host.app/Contents/MacOS/DYMO.DLS.Printing.Host

  [Running] com.f-secure.fsmac.gui.plist ( - installed 2022-11-28)
    Executable: /Applications/KPN Veilig/F-Secure Mac Protection.app/Contents/MacOS/F-Secure Mac Protection

  [Not Loaded] com.microsoft.OneDriveStandaloneUpdater.plist ( - installed 2020-12-02)
    Executable: /Applications/OneDrive.app/Contents/StandaloneUpdater.app/Contents/MacOS/OneDriveStandaloneUpdater

  [Not Loaded] com.microsoft.update.agent.plist ( - installed 2022-10-11)
    Executable: /Library/Application Support/Microsoft/MAU2.0/Microsoft AutoUpdate.app/Contents/MacOS/Microsoft Update Assistant.app/Contents/MacOS/Microsoft Update Assistant

  [Running] com.sophos.agent.plist ( - installed 2022-10-20)
    Executable: /Library/Sophos Anti-Virus/SophosAgent.app/Contents/MacOS/SophosAgent

  [Running] com.sophos.home.ui.plist ( - installed 2022-11-28)
    Executable: /Applications/Sophos/Sophos Home.app/Contents/MacOS/Sophos Home

User Launch Agents:
  [Not Loaded] com.DigiDNA.iMazing2Mac.Mini.plist ( - installed 2021-08-25)
    Executable: /Applications/iMazing.app/Contents/MacOS/iMazing Mini.app/Contents/MacOS/iMazing Mini

  [Loaded] com.adobe.GC.Invoker-1.0.plist ( - installed 2022-10-10)
    Executable: /Library/Application Support/Adobe/AdobeGCClient/agcinvokerutility

  [Not Loaded] com.dropbox.DropboxMacUpdate.agent.plist ( - installed 2022-07-04)
    Executable: ~/Library/Dropbox/DropboxMacUpdate.app/Contents/MacOS/DropboxMacUpdate

  [Not Loaded] com.dxo.PhotoLab3LaunchAgent.plist ( - installed 2020-07-06)
    Executable: ~/Library/Application Support/DxO Labs/LaunchAgents/photoLab3LaunchAgent

  [Loaded] com.macpaw.CleanMyMac4.Updater.plist ( - installed 2022-12-02)
    Executable: ~/Library/Application Support/CleanMyMac X/CleanMyMac X Updater.app/Contents/MacOS/CleanMyMac X Updater

  [Not Loaded] com.valvesoftware.steamclean.plist ( - installed 2020-04-07)
    Executable: ~/Library/Application Support/Steam/SteamApps/steamclean

User Login Items:
  [Not Loaded] StartUpHelper (Spotify - installed 2022-11-27)
    Modern Login Item
    /Applications/00- meest gebruikte/Spotify.app/Contents/Library/LoginItems/StartUpHelper.app

  [Not Loaded] WhatsApp Login Helper (App Store - installed 2022-12-15)
    Modern Login Item
    /Applications/00- meest gebruikte/WhatsApp.app/Contents/Library/LoginItems/WhatsApp Login Helper.app

  [Not Loaded] LaunchAtLoginHelper Site (MacPaw Inc. - installed 2022-11-27)
    Modern Login Item
    /Applications/02-Bureau/MacPaw Hider 2.app/Contents/Library/LoginItems/LaunchAtLoginHelper Site.app

  [Running] Flycut (App Store - installed 2022-11-27)
    Application
    /Applications/03-Computer hulp/Flycut.app

  [Not Loaded] FlycutHelper (App Store - installed 2022-11-27)
    Modern Login Item
    /Applications/03-Computer hulp/Flycut.app/Contents/Library/LoginItems/FlycutHelper.app

  [Not Loaded] magnetLauncher (App Store - installed 2022-11-27)
    Modern Login Item
    /Applications/03-Computer hulp/Magnet.app/Contents/Library/LoginItems/magnetLauncher.app

  [Not Loaded] SnagitHelper2020 (TechSmith Corporation - installed 2022-11-27)
    Modern Login Item
    /Applications/03-Computer hulp/Snagit 2020 beeldscherm opnames.app/Contents/Library/LoginItems/SnagitHelper2020.app

  [Not Loaded] SnagitLaunchAtLogin (TechSmith Corporation - installed 2022-11-27)
    Modern Login Item
    /Applications/03-Computer hulp/Snagit 2020 beeldscherm opnames.app/Contents/Library/LoginItems/SnagitLaunchAtLogin.app

  [Not Loaded] Launcher Disabler (Microsoft Corporation - installed 2021-01-26)
    Modern Login Item
    /Applications/04-Internet/OneDrive.app/Contents/Library/LoginItems/Launcher Disabler.app

  [Not Loaded] OneDrive Launcher (Microsoft Corporation - installed 2021-01-26)
    Modern Login Item
    /Applications/04-Internet/OneDrive.app/Contents/Library/LoginItems/OneDrive Launcher.app

  [Not Loaded] HelperApp (App Store - installed 2022-11-27)
    Modern Login Item
    /Applications/04-Internet/WeTransfer.app/Contents/Library/LoginItems/HelperApp.app

  [Running] N4RA379GBW.com.busymac.busycal3.alarm (Busy Apps FZE - installed 2022-11-27)
    Modern Login Item
    /Applications/BusyCal.app/Contents/Library/LoginItems/N4RA379GBW.com.busymac.busycal3.alarm.app

  [Not Loaded] XE2XNRRXZ5.com.canon.Digital-Photo-Professional-4.Cloud-Develop.Beta.Dpp4XPCDCCHelper (Canon Inc. - installed 2022-11-27)
    Modern Login Item
    /Applications/Canon Utilities/Digital Photo Professional 4/Digital Photo Professional 4.app/Contents/Library/LoginItems/XE2XNRRXZ5.com.canon.Digital-Photo-Professional-4.Cloud-Develop.Beta.Dpp4XPCDCCHelper.app

  [Running] CleanMyMac X HealthMonitor (MacPaw Inc. - installed 2022-12-20)
    Modern Login Item
    /Applications/CleanMyMac X.app/Contents/Library/LoginItems/CleanMyMac X HealthMonitor.app

  [Running] CleanMyMac X Menu (MacPaw Inc. - installed 2022-12-20)
    Modern Login Item
    /Applications/CleanMyMac X.app/Contents/Library/LoginItems/CleanMyMac X Menu.app

  [Not Loaded] Autoupdate (MacPaw Inc. - installed 2022-12-20)
    Modern Login Item
    /Applications/CleanMyMac X.app/Contents/Library/LoginItems/CleanMyMac X Menu.app/Contents/Frameworks/DevMateKit.framework/Versions/A/Resources/Autoupdate.app

  [Not Loaded] KPN Cloud Autostart Helper (App Store - installed 2022-11-27)
    Modern Login Item
    /Applications/KPN Cloud.app/Contents/Library/LoginItems/KPN Cloud Autostart Helper.app

  [Loaded] NordVPNLauncher (App Store - installed 2022-12-01)
    Modern Login Item
    /Applications/NordVPN.app/Contents/Library/LoginItems/NordVPNLauncher.app

  [Not Loaded] PathFinderLauncher (Dragan Milic - installed 2022-11-27)
    Modern Login Item
    /Applications/Path Finder.app/Contents/Library/LoginItems/PathFinderLauncher.app

  [Not Loaded] SynoToolLoginLauncher (App Store - installed 2021-09-09)
    Modern Login Item
    /Applications/SynoTool.app/Contents/Library/LoginItems/SynoToolLoginLauncher.app

Internet Plug-ins:
  AdobePDFViewerNPAPI: 17.012.20098 (installed 2021-02-22)
  AdobePDFViewer: 21.001.20138 (installed 2021-02-22)
  DYMO NPAPI Addin: 1.0 (installed 2022-11-27)
  DYMO Safari Addin:  (installed 2022-11-27)
  AdobeAAMDetect: 3.0.0.0 (installed 2022-09-30)

Audio Plug-ins:
  ACE: 11.8.3 (installed 2022-10-13)
  Apowersoft Audio Device: 1.0.1.0 (installed 2022-02-07)
  MMAudio Device: 1.3.3 (installed 2021-12-29)

Backup:
  Time Machine information is limited without Full Disk Access
  One other local snapshot

Performance:
  System Load: 2.40 (1 min ago) 2.00 (5 min ago) 1.78 (15 min ago)
  Nominal I/O usage: 1.47 MB/s
  File system: 27.53 seconds
  Write speed: 1421 MB/s
  Read speed: 1100 MB/s

CPU Usage Snapshot:
  Type Overall
  System: 5 %
  User: 8 %
  Idle: 87 %

Top Processes Snapshot by CPU:
  Process (count) CPU (Source - Location)
  WindowServer 6.74 % (Apple)
  ApowerREC 5.46 % (Apowersoft Limited)
  coreaudiod 3.94 % (Apple)
  EtreCheckPro 3.16 % (Etresoft, Inc.)
  kernel_task 2.83 % (Apple)

Top Processes Snapshot by Memory:
  Process (count) RAM usage (Source - Location)
  com.apple.WebKit.WebContent (6) 1.14 GB (Apple)
  fsavd (5) 881 MB (F-Secure Corporation)
  EtreCheckPro 733 MB (Etresoft, Inc.)
  Vivaldi Helper (Renderer) (4) 707 MB (Vivaldi Technologies AS)
  WhatsApp Helper (Renderer) (2) 641 MB (App Store)

Top Processes Snapshot by Network Use:
  Process (count) Input / Output (Source - Location)
  Spotify 39 MB / 274 KB (Spotify)
  mDNSResponder 21 MB / 2 MB (Apple)
  Mail 2 MB / 4 MB (Apple)
  SophosWebIntelligence 1 MB / 2 MB (Not signed)
  SophosMcsAgentD 702 KB / 1 MB (Not signed)

Top Processes Snapshot by Energy Use:
  Process (count) Energy (0-100) (Source - Location)
  WindowServer 9 (Apple)
  coreaudiod 5 (Apple)
  ApowerREC 4 (Apowersoft Limited)
  BusyCal 3 (Busy Apps FZE)
  Vivaldi Helper (Renderer) (4) 3 (Vivaldi Technologies AS)

Virtual Memory Information:
  Physical RAM: 24 GB

  Free RAM: 15 MB
  Used RAM: 16.11 GB
  Cached files: 7.88 GB

  Available RAM: 7.89 GB
  Swap Used: 439 MB

Software Installs (past 60 days):
  Install Date Name (Version)
  2022-11-22 albelli (11.4.2)
  2022-11-27 DYMO Label v.8 (1.0)
  2022-11-30 Numbers (12.1)
  2022-11-30 Pages (12.1)
  2022-11-30 Keynote (12.1)
  2022-12-01 NordVPN (7.13.0)
  2022-12-07 KPN Veilig (47125)
  2022-12-15 WhatsApp (2.2246.10)

Clean up:
  /Library/LaunchDaemons/com.microsoft.teams.TeamsUpdaterDaemon.plist
    /Applications/Microsoft Teams.app/Contents/TeamsUpdaterDaemon.xpc/Contents/MacOS/TeamsUpdaterDaemon
    Executable not found
  /Library/LaunchAgents/com.microsoft.OneDriveStandaloneUpdater.plist
    /Applications/OneDrive.app/Contents/StandaloneUpdater.app/Contents/MacOS/OneDriveStandaloneUpdater
    Executable not found
  ~/Library/LaunchAgents/com.DigiDNA.iMazing2Mac.Mini.plist
    /Applications/iMazing.app/Contents/MacOS/iMazing Mini.app/Contents/MacOS/iMazing Mini
    Executable not found
  ~/Library/LaunchAgents/com.valvesoftware.steamclean.plist
    ~/Library/Application Support/Steam/SteamApps/steamclean
    Executable not found

Diagnostics Information (past 7-30 days):
  2022-12-21 13:57:55 ApowerREC.app High CPU Use
    Executable: /Applications/06-Audio /ApowerREC/ApowerREC.app


End of report

Om ook maar even te dubbelposten:
Wanneer Malwarebytes niks vind hoef je het daar niet in te zoeken.

Waarschijnlijk heb je ergens een keer op "Toestaan" geklikt wanneer er op een site gevraagd werd of er notificaties gestuurd mochten worden.

In dit (Frans/Engelstalige) topic kun je een mogelijke oplossing vinden. Ik zou het in ieder geval eens in die hoek zoeken. https://discussions.apple.com/thread/254451620

Een deel zou je mogelijk kunnen vinden in Safari (als dat je browser is). Mogelijk ook deels in Systeemvoorkeuren -> Meldingen.

Randzaken:

- "This computer has multiple antivirus apps installed" + "Antivirus software: Apple, F-Secure, and Sophos"
Wat vind je daar zelf van?

- "No Time Machine backup - Time Machine backup not found"
Je maakt wel of geen backups?

Er staan wel meer dingen in het rapport waar ik iets van vind. Daar wordt alleen op dit moment niets over gevraagd, dus geef ik daar even geen advies over.

Randzaken:

- "This computer has multiple antivirus apps installed" + "Antivirus software: Apple, F-Secure, and Sophos"
Wat vind je daar zelf van?
Tja geen idee, is zo in de loop der tijd erop gekomen, zonder dat ik wist of ik er al een had.


- "No Time Machine backup - Time Machine backup not found"
Je maakt wel of geen backups?

Nee Time Machine gebruik ik niet, krijg het niet goed voor elkaar. heb wel een server, waar ik regelmatig een back up op maak op een aparte schijf.

Er staan wel meer dingen in het rapport waar ik iets van vind. Daar wordt alleen op dit moment niets over gevraagd, dus geef ik daar even geen advies over.

Sypie, dank voor je eerder advies, volgens mij heb ik het gevonden. Ik ben een simpele gebruiker op de iMac, vind het een geweldige machine, eind jaren 70 begonnen met de Acorn groep, later naar Apple overgegaan, ben meer een applicatie gebruiker, Soms probeer ik wat uit, maar veel software matige zaken tja dat is een dingetje wat ik lastig vind. ook netwerk zaken ben ik niet zo goed thuis. Vandaar dat je allerlei dingen in het rapport ziet staan, waar je iets van vind. Je mag me altijd wel aangeven wat je er dan van vind. Etrecheck is mooi, maar begrijpen doe ik het niet allemaal. dus brand maar los. mag ook in PB als dat hier kan en als het hier niet thuis hoort.

Waarschijnlijk heb je ergens een keer op "Toestaan" geklikt wanneer er op een site gevraagd werd of er notificaties gestuurd mochten worden.

@Macbommel: Heb je hier alles weggehaald? (Safari notifications)



https://support.apple.com/nl-nl/guide/safari/sfri40734/mac

Dank Puk,  Ik heb daar alles al weggehaald. en tot nu toe geen melding meer gekregen.
Dus ik denk en hoop dat het probleem is opgelost.
Met dank voor jullie toegewijde reacties en oplossingen