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A new variant of the Mac Defender scareware that has plagued Mac OS X users since the beginning of the month no longer asks users for their admin password during installation.
Mac Defender is probably the first widespread Mac malware attack and it caught a lot of users off guard, exactly like antivirus experts predicted for years.
The Microsoft Defender ATP icon will now appear in the menu bar. It may show an alert notification that the protection definitions are out of date. Click the Microsoft Defender ATP icon in the menu bar and choose Action Recommended. Mac Defender (also known as Mac Protector, Mac Security, Mac Guard, Mac Shield, and FakeMacDef) is an internet rogue security program that targets computers running macOS.The Mac security firm Intego discovered the fake antivirus software on 2 May 2011, with a patch not being provided by Apple until 31 May. How to avoid or remove Mac Defender malware in Mac OS X v10.6 or earlier Learn how to avoid or remove Mac Defender malware in Mac OS X v10.6 or earlier. A phishing scam has targeted Mac users by redirecting them from legitimate websites to fake websites which tell them that their computer is infected with a virus.
Apple's strategy of advertising Macs as virus free definitely paid off for the company in terms of sales, but created a false sense of security for users.
The only thing that kept malware writers away from the Mac plantform all these years was a low return on investment.
Broken baubles mac os. Mac Defender is a fake rogue anti-spyware program that for the Mac OS operating system. This infection is spread through the use of advertisements on web sites that pretend to be fake online. Platform: Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac, Mac OS X, Mac OS X 10.10 Yosemite, Mac OS X 10.9 Mavericks, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard Price: $49.99: Available now. Ships from and sold by Amazon.com Services LLC.
Learning how to code for Mac and maintaining a separate version of their malicious programs for an operating system that didn't have that many users simply wasn't worth it.
However, security experts warned that this will change and it appears it has already started, Mac Defender being a good example of how unprepared Mac users are when it comes to malware attacks.
Mac Defender are distributed through search result poisoning campaigns that have been around for years and are pretty much a common occurrence.
The new variant, called MacGuard, is delivered through a downloader application named avRunner which is installed by a avSetup.pkg file.
AvSetup.pkg is automatically downloaded when users visit one of the rogue search result pages and for certain Safari configurations it is even auto-executed.
'Unlike the previous variants of this fake antivirus, no administrator's password is required to install this program,' Mac antivirus vendor Intego warns.
'Since any user with an administrator's account – the default if there is just one user on a Mac – can install software in the Applications folder, a password is not needed,' the company explains.
The password prompt displayed by Mac Defender's installation routine could have served as an indication that something is wrong. Unfortunately, the people behind this malware have figured out that it's unnecessary.
SecureMac reports that a new privacy and security threat is targeting computers running Apple's Mac OS X disguised as an anti-virus program called MAC Defender.
The rouge anti-virus program will 'detect' nonexistent threats as being present on the user's system in an effort to persuade them to hand over their credit card information and purchase a 'subscription' to the program. If that doesn't do enough to convince the user to buy the fake anti-virus program, it will start popping up pornographic websites to create an actual problem on the system
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The malware, first reported on various discussion boards last week, initially appears in the web browser as a fake anti-virus scan (with graphics from Microsoft Windows) when the user clicks a web link.
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At the time of our initial analysis, the fake scan sites were appearing after the user clicked an infected link in Google image searches. Initial user reports indicate that a wide variety of keywords will show search results containing infected links.
If the user clicks on various links or buttons on the fake scan webpage rather than closing it immediately, the actual malware will be downloaded to the user's system. The fake scan site checks the web browser settings to determine if the user is running Mac OS X or Microsoft Windows, and then downloads the appropriate installer for the user's operating system.
If the user has their web browser to automatically open ‘safe' files such as zip archives, the installer for the malware will appear without further user interaction. Once the user runs the installer (and enters their admin password when prompted), the malware is installed to the Applications folder, sets itself as a login item, and starts to run.
Immunity (itch) mac os. The malware appears as a menu bar item in OS X, but without a Dock icon or any way to exit the program. The program immediately starts to 'scan' the infected system, alerts the user they are infected with various malware, and prompts them to purchase the program in order to remove the threats. If the user decides not to purchase a subscription, the malware will start displaying pornographic websites at random on the infected system.
MAC Defender uses Javascript to display the fake scan webpage and download the installer file, unlike the Boonana malware which uses Java as the technology behind infections.
While disabling Java in the web browser was an easy solution to avoid Boonana infections, Javascript is used on a large number of websites, and disabling Javascript will result in a significantly degraded web browsing experience. Instead, SecureMac offers the following simple tips to avoid infection by MAC Defender:
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Safe browsing tips
1. Watch where you surf. By sticking with safe, well-known websites, you will be less likely to visit a site that will attempt to infect you with this malware. When clicking on results from a search engine, be extra vigilant for websites that seem fishy.
2. Watch what you download. Download files only from trusted sources and safe sites. If a file automatically downloads or an installer randomly appears, be sure to determine if it is legitimate instead of blindly installing it. If you are unsure, err on the side of caution and don't install the program without further research.
3. Use the security features in OS X. Disable web browsers from automatically opening 'safe' files. In Safari, you can disable this feature by clicking the 'Safari' menu, then clicking 'Preferences,' then uncheck the 'Open 'safe' files after downloading' checkbox. Turn on the built-in Firewall, and consider legitimate security software, especially when a computer is shared by multiple users.
Removal instructions
For manual removal users should follow either of these two methods:
Method one
1. Open Activity Monitor from the Utilities folder. Make sure the drop-down menu is set to 'all processes.'
2. Use the search field in Activity Monitor to search for MacDefender.
3. Click on the MacDefender process. Click the 'Quit Process' button. Click 'Force Quit.'
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4. Drag the MacDefender program (installed in the Applications folder by default) to the Trash. Street crossing mac os. Empty the Trash.
5. Remove MacDefender from the Login Items for your Account in the OS X System Preferences (if it exists).
Method two (advanced)
1. Open the Terminal application from the Utilities folder.
2. Type the following command in the terminal (without quotes) and hit the return key: ‘ps -ax | grep -i MacDefender'
3. Note the process ID associated with the MacDefender program (the first digits listed in the result).
4. Type the following command in the terminal (without quotes, and substituting the process ID noted above for XXXX) and hit the return key: ‘kill XXXX'
At this time the MAC Defender program will no longer be running. Continue with steps 4 and 5 from Method One for removal.