How to eliminate Diagram.app from computers
Written by Tomas Meskauskas on
What kind of application is Diagram.app?
Our team has analyzed Diagram.app and determined that this app is part of the Pirrit family and functions as adware. Once on the operating system, Diagram.app can generate annoying and misleading advertisements to trick users into opening unreliable pages. Users should avoid interacting with such ads and remove adware-type apps to avoid potential issues.
Diagram.app adware in detail
Adware like Diagram.app can deliver deceptive advertisements. These ads may include fake warnings that suggest the system is infected or in danger, encouraging users to take immediate action. They can lead to scam websites or unwanted downloads. These ads might also feature misleading offers, such as too-good-to-be-true deals, free software downloads, or fake product promotions.
Additionally, adware can push unreliable content, often redirecting users to malicious sites or encouraging them to install potentially harmful software. Through websites opened via the ads generated by Diagram.app, users may become victims of identity theft, lose money, or even have their computers infected.
Moreover, Diagram.app may be designed to collect various data, including browsing habits, search queries, IP addresses, system information, credit card details, passwords, and more. This data can be sold to third parties and (or) misused for malicious purposes (e.g., to steal online accounts).
In some cases, even after being uninstalled, traces of adware may remain. While adware can be removed through traditional methods like uninstalling unwanted programs or clearing browser extensions, specialized tools like Combo Cleaner or other anti-adware software are often recommended for a more thorough removal.
| Name | Ads by Diagram.app |
| Threat Type | Adware, Mac malware, Mac virus |
| Detection Names | Avast (MacOS:Pirrit-DQ [Adw]), Combo Cleaner (Adware.MAC.Generic.27890), ESET-NOD32 (A Variant Of OSX/Adware.Pirrit.BM), Kaspersky (Not-a-virus:HEUR:AdWare.OSX.Pirrit.ac), Full List (VirusTotal) |
| Symptoms | Your Mac becomes slower than normal, you see unwanted pop-up ads, you are redirected to dubious websites. |
| Distribution methods | Deceptive pop-up ads, free software installers (bundling), torrent file downloads. |
| Damage | Internet browser tracking (potential privacy issues), display of unwanted ads, redirects to dubious websites, loss of private information. |
| Malware Removal (Mac) | To eliminate possible malware infections, scan your Mac with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. |
More about adware
While usually considered less dangerous than malware, adware can still pose significant risks to privacy and security, making its prevention and removal essential for maintaining a safe digital environment. Typically, users install software of this type unknowingly. If installed, adware should be eliminated as soon as possible.
More adware examples are Linkmanager, EssentialOperation, and RunningProgram.
How did Diagram.app install on my computer?
Adware is often bundled with free and (or) untrustworthy software. Users may install the main program and, without carefully reading the installation prompts, agree to install the included adware. Typically, adware or other unwanted offers are hidden under "Advanced", "Custom", or other settings or mentioned alongside pre-selected checkboxes.
Also, users can install adware by downloading apps and files from P2P networks, unofficial sites or app stores, and similar channels, or through deceptive links, notifications from unreliable web pages, fake updates, misleading ads, compromised websites, or cracked software.
How to avoid installation of unwanted applications?
Download software from trusted sources (such as official websites and app stores). Read installation prompts carefully - deselect unwanted apps using the provided options/settings or checkboxes. Use reputable antivirus or antimalware software. Keep the operating system and applications up to date.
Be cautious of unsolicited emails and advertisements, links, and buttons on shady websites. Do not agree to receive notifications from questionable pages. If your computer is already infected with Diagram.app, we recommend running a scan with Combo Cleaner Antivirus for macOS to automatically eliminate this adware.
When removing Diagram.app, it is important to check these folders for its components (the filenames may differ in each folder, yet every single one should contain "diagram"):
- ~/Library/LaunchAgents
- /Library/LaunchDaemons
- /Library/LaunchAgents
- /Library/StartupItems
A warning that appears before installing Diagram.app:
Text in this warning:
"Diagram.app" will damage your computer.
This file was downloaded on a unknown date.
OK
Show in Finder
Instant automatic Mac malware removal:
Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of Mac malware. Download it by clicking the button below:
▼ DOWNLOAD Combo Cleaner for Mac
By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for Combo Cleaner. Limited seven days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.
Quick menu:
- What is Diagram.app?
- STEP 1. Remove Diagram.app related files and folders from OSX.
- STEP 2. Remove Diagram.app ads from Safari.
- STEP 3. Remove Diagram.app adware from Google Chrome.
- STEP 4. Remove Diagram.app ads from Mozilla Firefox.
Video showing how to remove adware and browser hijackers from a Mac computer:
Diagram.app adware removal:
Remove Diagram.app-related potentially unwanted applications from your "Applications" folder:
Click the Finder icon. In the Finder window, select "Applications". In the applications folder, look for "MPlayerX", "NicePlayer", or other suspicious applications and drag them to the Trash. After removing the potentially unwanted application(s) that cause online ads, scan your Mac for any remaining unwanted components.
Remove adware-related files and folders
Click the Finder icon, from the menu bar. Choose Go, and click Go to Folder...
Check for adware generated files in the /Library/LaunchAgents/ folder:
In the Go to Folder... bar, type: /Library/LaunchAgents/
In the "LaunchAgents" folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - "installmac.AppRemoval.plist", "myppes.download.plist", "mykotlerino.ltvbit.plist", "kuklorest.update.plist", etc. Adware commonly installs several files with the exact same string.
Check for adware generated files in the ~/Library/Application Support/ folder:
In the Go to Folder... bar, type: ~/Library/Application Support/
In the "Application Support" folder, look for any recently-added suspicious folders. For example, "MplayerX" or "NicePlayer", and move these folders to the Trash.
Check for adware generated files in the ~/Library/LaunchAgents/ folder:
In the Go to Folder... bar, type: ~/Library/LaunchAgents/
In the "LaunchAgents" folder, look for any recently-added suspicious files and move them to the Trash. Examples of files generated by adware - "installmac.AppRemoval.plist", "myppes.download.plist", "mykotlerino.ltvbit.plist", "kuklorest.update.plist", etc. Adware commonly installs several files with the exact same string.
Check for adware generated files in the /Library/LaunchDaemons/ folder:
In the "Go to Folder..." bar, type: /Library/LaunchDaemons/
In the "LaunchDaemons" folder, look for recently-added suspicious files. For example "com.aoudad.net-preferences.plist", "com.myppes.net-preferences.plist", "com.kuklorest.net-preferences.plist", "com.avickUpd.plist", etc., and move them to the Trash.
Scan your Mac with Combo Cleaner:
If you have followed all the steps correctly, your Mac should be clean of infections. To ensure your system is not infected, run a scan with Combo Cleaner Antivirus. Download it HERE. After downloading the file, double click combocleaner.dmg installer. In the opened window, drag and drop the Combo Cleaner icon on top of the Applications icon. Now open your launchpad and click on the Combo Cleaner icon. Wait until Combo Cleaner updates its virus definition database and click the "Start Combo Scan" button.
Combo Cleaner will scan your Mac for malware infections. If the antivirus scan displays "no threats found" - this means that you can continue with the removal guide; otherwise, it's recommended to remove any found infections before continuing.
After removing files and folders generated by the adware, continue to remove rogue extensions from your Internet browsers.
Remove malicious extensions from Internet browsers
Remove malicious Safari extensions:
Open the Safari browser, from the menu bar, select "Safari" and click "Preferences...".
In the preferences window, select "Extensions" and look for any recently-installed suspicious extensions. When located, click the "Uninstall" button next to it/them. Note that you can safely uninstall all extensions from your Safari browser - none are crucial for regular browser operation.
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Safari.
Remove malicious extensions from Google Chrome:
Click the Chrome menu icon 
(at the top right corner of Google Chrome), select "More Tools" and click "Extensions". Locate all recently-installed suspicious extensions, select these entries and click "Remove".
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Google Chrome.
Remove malicious extensions from Mozilla Firefox:
Click the Firefox menu 
(at the top right corner of the main window) and select "Add-ons and themes". Click "Extensions", in the opened window locate all recently-installed suspicious extensions, click on the three dots and then click "Remove".
- If you continue to have problems with browser redirects and unwanted advertisements - Reset Mozilla Firefox.
Frequently Asked Questions (FAQ)
What harm can adware cause?
Adware can slow down devices, direct users to malicious websites, compromise privacy, lead to potential security risks, and create a frustrating browsing experience.
What does adware do?
It is designed to bombard users with intrusive advertisements. Also, it can be used to collect personal data.
How do adware developers generate revenue?
They typically generate revenue by promoting various products, websites, or services. Much of this income is derived through affiliate programs, where developers earn commissions for driving traffic or sales through their ads.
Will Combo Cleaner remove Diagram.app adware?
Combo Cleaner will thoroughly scan your computer and remove adware. Manual removal may not always be effective, as remnants of the adware can remain hidden within the system. Even if the main software is deleted, some components might persist, continuing to cause issues.
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